Merge tag 'for-linus-3.4' of git://git.infradead.org/mtd-2.6

Pull MTD changes from David Woodhouse:
 - Artem's cleanup of the MTD API continues apace.
 - Fixes and improvements for ST FSMC and SuperH FLCTL NAND, amongst
   others.
 - More work on DiskOnChip G3, new driver for DiskOnChip G4.
 - Clean up debug/warning printks in JFFS2 to use pr_<level>.

Fix up various trivial conflicts, largely due to changes in calling
conventions for things like dmaengine_prep_slave_sg() (new inline
wrapper to hide new parameter, clashing with rewrite of previously last
parameter that used to be an 'append' flag, and is now a bitmap of
'unsigned long flags').

(Also some header file fallout - like so many merges this merge window -
and silly conflicts with sparse fixes)

* tag 'for-linus-3.4' of git://git.infradead.org/mtd-2.6: (120 commits)
  mtd: docg3 add protection against concurrency
  mtd: docg3 refactor cascade floors structure
  mtd: docg3 increase write/erase timeout
  mtd: docg3 fix inbound calculations
  mtd: nand: gpmi: fix function annotations
  mtd: phram: fix section mismatch for phram_setup
  mtd: unify initialization of erase_info->fail_addr
  mtd: support ONFI multi lun NAND
  mtd: sm_ftl: fix typo in major number.
  mtd: add device-tree support to spear_smi
  mtd: spear_smi: Remove default partition information from driver
  mtd: Add device-tree support to fsmc_nand
  mtd: fix section mismatch for doc_probe_device
  mtd: nand/fsmc: Remove sparse warnings and errors
  mtd: nand/fsmc: Add DMA support
  mtd: nand/fsmc: Access the NAND device word by word whenever possible
  mtd: nand/fsmc: Use dev_err to report error scenario
  mtd: nand/fsmc: Use devm routines
  mtd: nand/fsmc: Modify fsmc driver to accept nand timing parameters via platform
  mtd: fsmc_nand: add pm callbacks to support hibernation
  ...

152 files changed, 6063 insertions, 2493 deletions

diff --git a/Documentation/devicetree/bindings/mtd/fsmc-nand.txt b/Documentation/devicetree/bindings/mtd/fsmc-nand.txt
new file mode 100644
index 000000000000..e2c663b354d2
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/fsmc-nand.txt
@@ -0,0 +1,33 @@
+* FSMC NAND
+
+Required properties:
+- compatible : "st,spear600-fsmc-nand"
+- reg : Address range of the mtd chip
+- reg-names: Should contain the reg names "fsmc_regs" and "nand_data"
+- st,ale-off : Chip specific offset to ALE
+- st,cle-off : Chip specific offset to CLE
+
+Optional properties:
+- bank-width : Width (in bytes) of the device.  If not present, the width
+  defaults to 1 byte
+- nand-skip-bbtscan: Indicates the the BBT scanning should be skipped
+
+Example:
+
+        fsmc: flash@d1800000 {
+                compatible = "st,spear600-fsmc-nand";
+                #address-cells = <1>;
+                #size-cells = <1>;
+                reg = <0xd1800000 0x1000        /* FSMC Register */
+                       0xd2000000 0x4000>;      /* NAND Base */
+                reg-names = "fsmc_regs", "nand_data";
+                st,ale-off = <0x20000>;
+                st,cle-off = <0x10000>;
+
+                bank-width = <1>;
+                nand-skip-bbtscan;
+
+                partition@0 {
+                        ...
+                };
+        };
diff --git a/Documentation/devicetree/bindings/mtd/spear_smi.txt b/Documentation/devicetree/bindings/mtd/spear_smi.txt
new file mode 100644
index 000000000000..7248aadd89e4
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/spear_smi.txt
@@ -0,0 +1,31 @@
+* SPEAr SMI
+
+Required properties:
+- compatible : "st,spear600-smi"
+- reg : Address range of the mtd chip
+- #address-cells, #size-cells : Must be present if the device has sub-nodes
+  representing partitions.
+- interrupt-parent: Should be the phandle for the interrupt controller
+  that services interrupts for this device
+- interrupts: Should contain the STMMAC interrupts
+- clock-rate : Functional clock rate of SMI in Hz
+
+Optional properties:
+- st,smi-fast-mode : Flash supports read in fast mode
+
+Example:
+
+        smi: flash@fc000000 {
+                compatible = "st,spear600-smi";
+                #address-cells = <1>;
+                #size-cells = <1>;
+                reg = <0xfc000000 0x1000>;
+                interrupt-parent = <&vic1>;
+                interrupts = <12>;
+                clock-rate = <50000000>;        /* 50MHz */
+
+                flash@f8000000 {
+                        st,smi-fast-mode;
+                        ...
+                };
+        };
diff --git a/arch/arm/mach-omap1/flash.c b/arch/arm/mach-omap1/flash.c
index f9bf78d4fdfb..401eb3c080c2 100644
--- a/arch/arm/mach-omap1/flash.c
+++ b/arch/arm/mach-omap1/flash.c
@@ -17,20 +17,12 @@
 
 void omap1_set_vpp(struct platform_device *pdev, int enable)
 {
-        static int count;
         u32 l;
 
-        if (enable) {
-                if (count++ == 0) {
-                        l = omap_readl(EMIFS_CONFIG);
-                        l |= OMAP_EMIFS_CONFIG_WP;
-                        omap_writel(l, EMIFS_CONFIG);
-                }
-        } else {
-                if (count && (--count == 0)) {
-                        l = omap_readl(EMIFS_CONFIG);
-                        l &= ~OMAP_EMIFS_CONFIG_WP;
-                        omap_writel(l, EMIFS_CONFIG);
-                }
-        }
+        l = omap_readl(EMIFS_CONFIG);
+        if (enable)
+                l |= OMAP_EMIFS_CONFIG_WP;
+        else
+                l &= ~OMAP_EMIFS_CONFIG_WP;
+        omap_writel(l, EMIFS_CONFIG);
 }
diff --git a/arch/arm/mach-s3c24xx/simtec-nor.c b/arch/arm/mach-s3c24xx/simtec-nor.c
index 2119ca6a73bc..b9d6d4f92c03 100644
--- a/arch/arm/mach-s3c24xx/simtec-nor.c
+++ b/arch/arm/mach-s3c24xx/simtec-nor.c
@@ -35,9 +35,7 @@
 static void simtec_nor_vpp(struct platform_device *pdev, int vpp)
 {
         unsigned int val;
-        unsigned long flags;
 
-        local_irq_save(flags);
         val = __raw_readb(BAST_VA_CTRL3);
 
         printk(KERN_DEBUG "%s(%d)\n", __func__, vpp);
@@ -48,7 +46,6 @@ static void simtec_nor_vpp(struct platform_device *pdev, int vpp)
                 val &= ~BAST_CPLD_CTRL3_ROMWEN;
 
         __raw_writeb(val, BAST_VA_CTRL3);
-        local_irq_restore(flags);
 }
 
 static struct physmap_flash_data simtec_nor_pdata = {
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index a125d4e114ec..f49e28abe0ab 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -39,6 +39,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
+#include <linux/mtd/sh_flctl.h>
 #include <linux/pm_clock.h>
 #include <linux/smsc911x.h>
 #include <linux/sh_intc.h>
@@ -956,6 +957,50 @@ static struct platform_device fsi_ak4643_device = {
         },
 };
 
+/* FLCTL */
+static struct mtd_partition nand_partition_info[] = {
+        {
+                .name   = "system",
+                .offset = 0,
+                .size   = 128 * 1024 * 1024,
+        },
+        {
+                .name   = "userdata",
+                .offset = MTDPART_OFS_APPEND,
+                .size   = 256 * 1024 * 1024,
+        },
+        {
+                .name   = "cache",
+                .offset = MTDPART_OFS_APPEND,
+                .size   = 128 * 1024 * 1024,
+        },
+};
+
+static struct resource nand_flash_resources[] = {
+        [0] = {
+                .start  = 0xe6a30000,
+                .end    = 0xe6a3009b,
+                .flags  = IORESOURCE_MEM,
+        }
+};
+
+static struct sh_flctl_platform_data nand_flash_data = {
+        .parts          = nand_partition_info,
+        .nr_parts       = ARRAY_SIZE(nand_partition_info),
+        .flcmncr_val    = CLK_16B_12L_4H | TYPESEL_SET
+                        | SHBUSSEL | SEL_16BIT | SNAND_E,
+        .use_holden     = 1,
+};
+
+static struct platform_device nand_flash_device = {
+        .name           = "sh_flctl",
+        .resource       = nand_flash_resources,
+        .num_resources  = ARRAY_SIZE(nand_flash_resources),
+        .dev            = {
+                .platform_data = &nand_flash_data,
+        },
+};
+
 /*
  * The card detect pin of the top SD/MMC slot (CN7) is active low and is
  * connected to GPIO A22 of SH7372 (GPIO_PORT41).
@@ -1259,6 +1304,7 @@ static struct platform_device *mackerel_devices[] __initdata = {
         &fsi_device,
         &fsi_ak4643_device,
         &fsi_hdmi_device,
+        &nand_flash_device,
         &sdhi0_device,
 #if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE)
         &sdhi1_device,
@@ -1488,6 +1534,30 @@ static void __init mackerel_init(void)
         gpio_request(GPIO_FN_MMCCMD0, NULL);
         gpio_request(GPIO_FN_MMCCLK0, NULL);
 
+        /* FLCTL */
+        gpio_request(GPIO_FN_D0_NAF0, NULL);
+        gpio_request(GPIO_FN_D1_NAF1, NULL);
+        gpio_request(GPIO_FN_D2_NAF2, NULL);
+        gpio_request(GPIO_FN_D3_NAF3, NULL);
+        gpio_request(GPIO_FN_D4_NAF4, NULL);
+        gpio_request(GPIO_FN_D5_NAF5, NULL);
+        gpio_request(GPIO_FN_D6_NAF6, NULL);
+        gpio_request(GPIO_FN_D7_NAF7, NULL);
+        gpio_request(GPIO_FN_D8_NAF8, NULL);
+        gpio_request(GPIO_FN_D9_NAF9, NULL);
+        gpio_request(GPIO_FN_D10_NAF10, NULL);
+        gpio_request(GPIO_FN_D11_NAF11, NULL);
+        gpio_request(GPIO_FN_D12_NAF12, NULL);
+        gpio_request(GPIO_FN_D13_NAF13, NULL);
+        gpio_request(GPIO_FN_D14_NAF14, NULL);
+        gpio_request(GPIO_FN_D15_NAF15, NULL);
+        gpio_request(GPIO_FN_FCE0, NULL);
+        gpio_request(GPIO_FN_WE0_FWE, NULL);
+        gpio_request(GPIO_FN_FRB, NULL);
+        gpio_request(GPIO_FN_A4_FOE, NULL);
+        gpio_request(GPIO_FN_A5_FCDE, NULL);
+        gpio_request(GPIO_FN_RD_FSC, NULL);
+
         /* enable GPS module (GT-720F) */
         gpio_request(GPIO_FN_SCIFA2_TXD1, NULL);
         gpio_request(GPIO_FN_SCIFA2_RXD1, NULL);
@@ -1532,6 +1602,7 @@ static void __init mackerel_init(void)
         sh7372_add_device_to_domain(&sh7372_a4mp, &fsi_device);
         sh7372_add_device_to_domain(&sh7372_a3sp, &usbhs0_device);
         sh7372_add_device_to_domain(&sh7372_a3sp, &usbhs1_device);
+        sh7372_add_device_to_domain(&sh7372_a3sp, &nand_flash_device);
         sh7372_add_device_to_domain(&sh7372_a3sp, &sh_mmcif_device);
         sh7372_add_device_to_domain(&sh7372_a3sp, &sdhi0_device);
 #if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE)
diff --git a/arch/arm/mach-shmobile/clock-sh7372.c b/arch/arm/mach-shmobile/clock-sh7372.c
index de243e3c8392..94d1f88246d3 100644
--- a/arch/arm/mach-shmobile/clock-sh7372.c
+++ b/arch/arm/mach-shmobile/clock-sh7372.c
@@ -511,7 +511,7 @@ enum { MSTP001, MSTP000,
        MSTP223,
        MSTP218, MSTP217, MSTP216, MSTP214, MSTP208, MSTP207,
        MSTP206, MSTP205, MSTP204, MSTP203, MSTP202, MSTP201, MSTP200,
-       MSTP328, MSTP323, MSTP322, MSTP314, MSTP313, MSTP312,
+        MSTP328, MSTP323, MSTP322, MSTP315, MSTP314, MSTP313, MSTP312,
        MSTP423, MSTP415, MSTP413, MSTP411, MSTP410, MSTP407, MSTP406,
        MSTP405, MSTP404, MSTP403, MSTP400,
        MSTP_NR };
@@ -553,6 +553,7 @@ static struct clk mstp_clks[MSTP_NR] = {
         [MSTP328] = MSTP(&div6_clks[DIV6_SPU], SMSTPCR3, 28, 0), /* FSI2 */
         [MSTP323] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR3, 23, 0), /* IIC1 */
         [MSTP322] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR3, 22, 0), /* USB0 */
+        [MSTP315] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 15, 0), /* FLCTL*/
         [MSTP314] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 14, 0), /* SDHI0 */
         [MSTP313] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 13, 0), /* SDHI1 */
         [MSTP312] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 12, 0), /* MMC */
@@ -653,6 +654,7 @@ static struct clk_lookup lookups[] = {
         CLKDEV_DEV_ID("r8a66597_hcd.0", &mstp_clks[MSTP322]), /* USB0 */
         CLKDEV_DEV_ID("r8a66597_udc.0", &mstp_clks[MSTP322]), /* USB0 */
         CLKDEV_DEV_ID("renesas_usbhs.0", &mstp_clks[MSTP322]), /* USB0 */
+        CLKDEV_DEV_ID("sh_flctl.0", &mstp_clks[MSTP315]), /* FLCTL */
         CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), /* SDHI0 */
         CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]), /* SDHI1 */
         CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[MSTP312]), /* MMC */
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index 8b90c44d237f..1621ad07d284 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -1544,6 +1544,8 @@ static struct fsmc_nand_platform_data nand_platform_data = {
         .nr_partitions = ARRAY_SIZE(u300_partitions),
         .options = NAND_SKIP_BBTSCAN,
         .width = FSMC_NAND_BW8,
+        .ale_off = PLAT_NAND_ALE,
+        .cle_off = PLAT_NAND_CLE,
 };
 
 static struct platform_device nand_device = {
diff --git a/arch/arm/mach-u300/include/mach/u300-regs.h b/arch/arm/mach-u300/include/mach/u300-regs.h
index 7b7cba960b69..65f87c523892 100644
--- a/arch/arm/mach-u300/include/mach/u300-regs.h
+++ b/arch/arm/mach-u300/include/mach/u300-regs.h
@@ -24,6 +24,11 @@
 /* NFIF */
 #define U300_NAND_IF_PHYS_BASE          0x9f800000
 
+/* ALE, CLE offset for FSMC NAND */
+#define PLAT_NAND_CLE                   (1 << 16)
+#define PLAT_NAND_ALE                   (1 << 17)
+
+
 /* AHB Peripherals */
 #define U300_AHB_PER_PHYS_BASE          0xa0000000
 #define U300_AHB_PER_VIRT_BASE          0xff010000
diff --git a/arch/mips/cavium-octeon/flash_setup.c b/arch/mips/cavium-octeon/flash_setup.c
index 0a430e06f5e5..e44a55bc7f0d 100644
--- a/arch/mips/cavium-octeon/flash_setup.c
+++ b/arch/mips/cavium-octeon/flash_setup.c
@@ -60,7 +60,7 @@ static int __init flash_init(void)
                 if (mymtd) {
                         mymtd->owner = THIS_MODULE;
                         mtd_device_parse_register(mymtd, part_probe_types,
-                                                  0, NULL, 0);
+                                                  NULL, NULL, 0);
                 } else {
                         pr_err("Failed to register MTD device for flash\n");
                 }
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 65334c49b71e..c81ef7e10e08 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -22,10 +22,10 @@
 #include <linux/platform_device.h>
 #include <linux/dmaengine.h>
 #include <linux/delay.h>
+#include <linux/fsl/mxs-dma.h>
 
 #include <asm/irq.h>
 #include <mach/mxs.h>
-#include <mach/dma.h>
 #include <mach/common.h>
 
 #include "dmaengine.h"
@@ -337,10 +337,32 @@ static void mxs_dma_free_chan_resources(struct dma_chan *chan)
         clk_disable_unprepare(mxs_dma->clk);
 }
 
+/*
+ * How to use the flags for ->device_prep_slave_sg() :
+ *    [1] If there is only one DMA command in the DMA chain, the code should be:
+ *            ......
+ *            ->device_prep_slave_sg(DMA_CTRL_ACK);
+ *            ......
+ *    [2] If there are two DMA commands in the DMA chain, the code should be
+ *            ......
+ *            ->device_prep_slave_sg(0);
+ *            ......
+ *            ->device_prep_slave_sg(DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ *            ......
+ *    [3] If there are more than two DMA commands in the DMA chain, the code
+ *        should be:
+ *            ......
+ *            ->device_prep_slave_sg(0);                                // First
+ *            ......
+ *            ->device_prep_slave_sg(DMA_PREP_INTERRUPT [| DMA_CTRL_ACK]);
+ *            ......
+ *            ->device_prep_slave_sg(DMA_PREP_INTERRUPT | DMA_CTRL_ACK); // Last
+ *            ......
+ */
 static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
                 struct dma_chan *chan, struct scatterlist *sgl,
                 unsigned int sg_len, enum dma_transfer_direction direction,
-                unsigned long append, void *context)
+                unsigned long flags, void *context)
 {
         struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
         struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
@@ -348,6 +370,7 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
         struct scatterlist *sg;
         int i, j;
         u32 *pio;
+        bool append = flags & DMA_PREP_INTERRUPT;
         int idx = append ? mxs_chan->desc_count : 0;
 
         if (mxs_chan->status == DMA_IN_PROGRESS && !append)
@@ -374,7 +397,6 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
                 ccw->bits |= CCW_CHAIN;
                 ccw->bits &= ~CCW_IRQ;
                 ccw->bits &= ~CCW_DEC_SEM;
-                ccw->bits &= ~CCW_WAIT4END;
         } else {
                 idx = 0;
         }
@@ -389,7 +411,8 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
                 ccw->bits = 0;
                 ccw->bits |= CCW_IRQ;
                 ccw->bits |= CCW_DEC_SEM;
-                ccw->bits |= CCW_WAIT4END;
+                if (flags & DMA_CTRL_ACK)
+                        ccw->bits |= CCW_WAIT4END;
                 ccw->bits |= CCW_HALT_ON_TERM;
                 ccw->bits |= CCW_TERM_FLUSH;
                 ccw->bits |= BF_CCW(sg_len, PIO_NUM);
@@ -420,7 +443,8 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
                                 ccw->bits &= ~CCW_CHAIN;
                                 ccw->bits |= CCW_IRQ;
                                 ccw->bits |= CCW_DEC_SEM;
-                                ccw->bits |= CCW_WAIT4END;
+                                if (flags & DMA_CTRL_ACK)
+                                        ccw->bits |= CCW_WAIT4END;
                         }
                 }
         }
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 65f36cf2ff33..b0f2ef988188 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -38,10 +38,10 @@
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
 #include <linux/module.h>
+#include <linux/fsl/mxs-dma.h>
 
 #include <mach/mxs.h>
 #include <mach/common.h>
-#include <mach/dma.h>
 #include <mach/mmc.h>
 
 #define DRIVER_NAME     "mxs-mmc"
@@ -305,7 +305,7 @@ static irqreturn_t mxs_mmc_irq_handler(int irq, void *dev_id)
 }
 
 static struct dma_async_tx_descriptor *mxs_mmc_prep_dma(
-        struct mxs_mmc_host *host, unsigned int append)
+        struct mxs_mmc_host *host, unsigned long flags)
 {
         struct dma_async_tx_descriptor *desc;
         struct mmc_data *data = host->data;
@@ -325,7 +325,7 @@ static struct dma_async_tx_descriptor *mxs_mmc_prep_dma(
         }
 
         desc = dmaengine_prep_slave_sg(host->dmach,
-                                sgl, sg_len, host->slave_dirn, append);
+                                sgl, sg_len, host->slave_dirn, flags);
         if (desc) {
                 desc->callback = mxs_mmc_dma_irq_callback;
                 desc->callback_param = host;
@@ -358,7 +358,7 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host)
         host->ssp_pio_words[2] = cmd1;
         host->dma_dir = DMA_NONE;
         host->slave_dirn = DMA_TRANS_NONE;
-        desc = mxs_mmc_prep_dma(host, 0);
+        desc = mxs_mmc_prep_dma(host, DMA_CTRL_ACK);
         if (!desc)
                 goto out;
 
@@ -398,7 +398,7 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host)
         host->ssp_pio_words[2] = cmd1;
         host->dma_dir = DMA_NONE;
         host->slave_dirn = DMA_TRANS_NONE;
-        desc = mxs_mmc_prep_dma(host, 0);
+        desc = mxs_mmc_prep_dma(host, DMA_CTRL_ACK);
         if (!desc)
                 goto out;
 
@@ -526,7 +526,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
         host->data = data;
         host->dma_dir = dma_data_dir;
         host->slave_dirn = slave_dirn;
-        desc = mxs_mmc_prep_dma(host, 1);
+        desc = mxs_mmc_prep_dma(host, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         if (!desc)
                 goto out;
 
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
index 284cf3433720..5760c1a4b3f6 100644
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -304,9 +304,6 @@ config MTD_OOPS
           buffer in a flash partition where it can be read back at some
           later point.
 
-          To use, add console=ttyMTDx to the kernel command line,
-          where x is the MTD device number to use.
-
 config MTD_SWAP
         tristate "Swap on MTD device support"
         depends on MTD && SWAP
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 9bcd1f415f43..dbbd2edfb812 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -87,7 +87,7 @@ static int cfi_intelext_partition_fixup(struct mtd_info *, struct cfi_private **
 
 static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len,
                      size_t *retlen, void **virt, resource_size_t *phys);
-static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
+static int cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
 
 static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long adr, int mode);
 static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr, int mode);
@@ -262,9 +262,9 @@ static void fixup_st_m28w320cb(struct mtd_info *mtd)
 static void fixup_use_point(struct mtd_info *mtd)
 {
         struct map_info *map = mtd->priv;
-        if (!mtd->point && map_is_linear(map)) {
-                mtd->point   = cfi_intelext_point;
-                mtd->unpoint = cfi_intelext_unpoint;
+        if (!mtd->_point && map_is_linear(map)) {
+                mtd->_point   = cfi_intelext_point;
+                mtd->_unpoint = cfi_intelext_unpoint;
         }
 }
 
@@ -274,8 +274,8 @@ static void fixup_use_write_buffers(struct mtd_info *mtd)
         struct cfi_private *cfi = map->fldrv_priv;
         if (cfi->cfiq->BufWriteTimeoutTyp) {
                 printk(KERN_INFO "Using buffer write method\n" );
-                mtd->write = cfi_intelext_write_buffers;
-                mtd->writev = cfi_intelext_writev;
+                mtd->_write = cfi_intelext_write_buffers;
+                mtd->_writev = cfi_intelext_writev;
         }
 }
 
@@ -443,15 +443,15 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary)
         mtd->type = MTD_NORFLASH;
 
         /* Fill in the default mtd operations */
-        mtd->erase   = cfi_intelext_erase_varsize;
-        mtd->read    = cfi_intelext_read;
-        mtd->write   = cfi_intelext_write_words;
-        mtd->sync    = cfi_intelext_sync;
-        mtd->lock    = cfi_intelext_lock;
-        mtd->unlock  = cfi_intelext_unlock;
-        mtd->is_locked = cfi_intelext_is_locked;
-        mtd->suspend = cfi_intelext_suspend;
-        mtd->resume  = cfi_intelext_resume;
+        mtd->_erase   = cfi_intelext_erase_varsize;
+        mtd->_read    = cfi_intelext_read;
+        mtd->_write   = cfi_intelext_write_words;
+        mtd->_sync    = cfi_intelext_sync;
+        mtd->_lock    = cfi_intelext_lock;
+        mtd->_unlock  = cfi_intelext_unlock;
+        mtd->_is_locked = cfi_intelext_is_locked;
+        mtd->_suspend = cfi_intelext_suspend;
+        mtd->_resume  = cfi_intelext_resume;
         mtd->flags   = MTD_CAP_NORFLASH;
         mtd->name    = map->name;
         mtd->writesize = 1;
@@ -600,12 +600,12 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
         }
 
 #ifdef CONFIG_MTD_OTP
-        mtd->read_fact_prot_reg = cfi_intelext_read_fact_prot_reg;
-        mtd->read_user_prot_reg = cfi_intelext_read_user_prot_reg;
-        mtd->write_user_prot_reg = cfi_intelext_write_user_prot_reg;
-        mtd->lock_user_prot_reg = cfi_intelext_lock_user_prot_reg;
-        mtd->get_fact_prot_info = cfi_intelext_get_fact_prot_info;
-        mtd->get_user_prot_info = cfi_intelext_get_user_prot_info;
+        mtd->_read_fact_prot_reg = cfi_intelext_read_fact_prot_reg;
+        mtd->_read_user_prot_reg = cfi_intelext_read_user_prot_reg;
+        mtd->_write_user_prot_reg = cfi_intelext_write_user_prot_reg;
+        mtd->_lock_user_prot_reg = cfi_intelext_lock_user_prot_reg;
+        mtd->_get_fact_prot_info = cfi_intelext_get_fact_prot_info;
+        mtd->_get_user_prot_info = cfi_intelext_get_user_prot_info;
 #endif
 
         /* This function has the potential to distort the reality
@@ -1017,8 +1017,6 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad
         case FL_READY:
         case FL_STATUS:
         case FL_JEDEC_QUERY:
-                /* We should really make set_vpp() count, rather than doing this */
-                DISABLE_VPP(map);
                 break;
         default:
                 printk(KERN_ERR "%s: put_chip() called with oldstate %d!!\n", map->name, chip->oldstate);
@@ -1324,7 +1322,7 @@ static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
         int chipnum;
         int ret = 0;
 
-        if (!map->virt || (from + len > mtd->size))
+        if (!map->virt)
                 return -EINVAL;
 
         /* Now lock the chip(s) to POINT state */
@@ -1334,7 +1332,6 @@ static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
         ofs = from - (chipnum << cfi->chipshift);
 
         *virt = map->virt + cfi->chips[chipnum].start + ofs;
-        *retlen = 0;
         if (phys)
                 *phys = map->phys + cfi->chips[chipnum].start + ofs;
 
@@ -1369,12 +1366,12 @@ static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
         return 0;
 }
 
-static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+static int cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
         struct map_info *map = mtd->priv;
         struct cfi_private *cfi = map->fldrv_priv;
         unsigned long ofs;
-        int chipnum;
+        int chipnum, err = 0;
 
         /* Now unlock the chip(s) POINT state */
 
@@ -1382,7 +1379,7 @@ static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
         chipnum = (from >> cfi->chipshift);
         ofs = from - (chipnum <<  cfi->chipshift);
 
-        while (len) {
+        while (len && !err) {
                 unsigned long thislen;
                 struct flchip *chip;
 
@@ -1400,8 +1397,10 @@ static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
                         chip->ref_point_counter--;
                         if(chip->ref_point_counter == 0)
                                 chip->state = FL_READY;
-                } else
-                        printk(KERN_ERR "%s: Warning: unpoint called on non pointed region\n", map->name); /* Should this give an error? */
+                } else {
+                        printk(KERN_ERR "%s: Error: unpoint called on non pointed region\n", map->name);
+                        err = -EINVAL;
+                }
 
                 put_chip(map, chip, chip->start);
                 mutex_unlock(&chip->mutex);
@@ -1410,6 +1409,8 @@ static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
                 ofs = 0;
                 chipnum++;
         }
+
+        return err;
 }
 
 static inline int do_read_onechip(struct map_info *map, struct flchip *chip, loff_t adr, size_t len, u_char *buf)
@@ -1456,8 +1457,6 @@ static int cfi_intelext_read (struct mtd_info *mtd, loff_t from, size_t len, siz
         chipnum = (from >> cfi->chipshift);
         ofs = from - (chipnum <<  cfi->chipshift);
 
-        *retlen = 0;
-
         while (len) {
                 unsigned long thislen;
 
@@ -1551,7 +1550,8 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
         }
 
         xip_enable(map, chip, adr);
- out:   put_chip(map, chip, adr);
+ out:   DISABLE_VPP(map);
+        put_chip(map, chip, adr);
         mutex_unlock(&chip->mutex);
         return ret;
 }
@@ -1565,10 +1565,6 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le
         int chipnum;
         unsigned long ofs;
 
-        *retlen = 0;
-        if (!len)
-                return 0;
-
         chipnum = to >> cfi->chipshift;
         ofs = to  - (chipnum << cfi->chipshift);
 
@@ -1794,7 +1790,8 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
         }
 
         xip_enable(map, chip, cmd_adr);
- out:   put_chip(map, chip, cmd_adr);
+ out:   DISABLE_VPP(map);
+        put_chip(map, chip, cmd_adr);
         mutex_unlock(&chip->mutex);
         return ret;
 }
@@ -1813,7 +1810,6 @@ static int cfi_intelext_writev (struct mtd_info *mtd, const struct kvec *vecs,
         for (i = 0; i < count; i++)
                 len += vecs[i].iov_len;
 
-        *retlen = 0;
         if (!len)
                 return 0;
 
@@ -1932,6 +1928,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
                         ret = -EIO;
                 } else if (chipstatus & 0x20 && retries--) {
                         printk(KERN_DEBUG "block erase failed at 0x%08lx: status 0x%lx. Retrying...\n", adr, chipstatus);
+                        DISABLE_VPP(map);
                         put_chip(map, chip, adr);
                         mutex_unlock(&chip->mutex);
                         goto retry;
@@ -1944,7 +1941,8 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
         }
 
         xip_enable(map, chip, adr);
- out:   put_chip(map, chip, adr);
+ out:   DISABLE_VPP(map);
+        put_chip(map, chip, adr);
         mutex_unlock(&chip->mutex);
         return ret;
 }
@@ -2086,7 +2084,8 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip
         }
 
         xip_enable(map, chip, adr);
-out:    put_chip(map, chip, adr);
+ out:   DISABLE_VPP(map);
+        put_chip(map, chip, adr);
         mutex_unlock(&chip->mutex);
         return ret;
 }
@@ -2483,7 +2482,7 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
                            allowed to. Or should we return -EAGAIN, because the upper layers
                            ought to have already shut down anything which was using the device
                            anyway? The latter for now. */
-                        printk(KERN_NOTICE "Flash device refused suspend due to active operation (state %d)\n", chip->oldstate);
+                        printk(KERN_NOTICE "Flash device refused suspend due to active operation (state %d)\n", chip->state);
                         ret = -EAGAIN;
                 case FL_PM_SUSPENDED:
                         break;
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 8d70895a58d6..d02592e6a0f0 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -59,6 +59,9 @@ static void cfi_amdstd_resume (struct mtd_info *);
 static int cfi_amdstd_reboot(struct notifier_block *, unsigned long, void *);
 static int cfi_amdstd_secsi_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
 
+static int cfi_amdstd_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
+                                  size_t *retlen, const u_char *buf);
+
 static void cfi_amdstd_destroy(struct mtd_info *);
 
 struct mtd_info *cfi_cmdset_0002(struct map_info *, int);
@@ -189,7 +192,7 @@ static void fixup_use_write_buffers(struct mtd_info *mtd)
         struct cfi_private *cfi = map->fldrv_priv;
         if (cfi->cfiq->BufWriteTimeoutTyp) {
                 pr_debug("Using buffer write method\n" );
-                mtd->write = cfi_amdstd_write_buffers;
+                mtd->_write = cfi_amdstd_write_buffers;
         }
 }
 
@@ -228,8 +231,8 @@ static void fixup_convert_atmel_pri(struct mtd_info *mtd)
 static void fixup_use_secsi(struct mtd_info *mtd)
 {
         /* Setup for chips with a secsi area */
-        mtd->read_user_prot_reg = cfi_amdstd_secsi_read;
-        mtd->read_fact_prot_reg = cfi_amdstd_secsi_read;
+        mtd->_read_user_prot_reg = cfi_amdstd_secsi_read;
+        mtd->_read_fact_prot_reg = cfi_amdstd_secsi_read;
 }
 
 static void fixup_use_erase_chip(struct mtd_info *mtd)
@@ -238,7 +241,7 @@ static void fixup_use_erase_chip(struct mtd_info *mtd)
         struct cfi_private *cfi = map->fldrv_priv;
         if ((cfi->cfiq->NumEraseRegions == 1) &&
                 ((cfi->cfiq->EraseRegionInfo[0] & 0xffff) == 0)) {
-                mtd->erase = cfi_amdstd_erase_chip;
+                mtd->_erase = cfi_amdstd_erase_chip;
         }
 
 }
@@ -249,8 +252,8 @@ static void fixup_use_erase_chip(struct mtd_info *mtd)
  */
 static void fixup_use_atmel_lock(struct mtd_info *mtd)
 {
-        mtd->lock = cfi_atmel_lock;
-        mtd->unlock = cfi_atmel_unlock;
+        mtd->_lock = cfi_atmel_lock;
+        mtd->_unlock = cfi_atmel_unlock;
         mtd->flags |= MTD_POWERUP_LOCK;
 }
 
@@ -429,12 +432,12 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
         mtd->type = MTD_NORFLASH;
 
         /* Fill in the default mtd operations */
-        mtd->erase   = cfi_amdstd_erase_varsize;
-        mtd->write   = cfi_amdstd_write_words;
-        mtd->read    = cfi_amdstd_read;
-        mtd->sync    = cfi_amdstd_sync;
-        mtd->suspend = cfi_amdstd_suspend;
-        mtd->resume  = cfi_amdstd_resume;
+        mtd->_erase   = cfi_amdstd_erase_varsize;
+        mtd->_write   = cfi_amdstd_write_words;
+        mtd->_read    = cfi_amdstd_read;
+        mtd->_sync    = cfi_amdstd_sync;
+        mtd->_suspend = cfi_amdstd_suspend;
+        mtd->_resume  = cfi_amdstd_resume;
         mtd->flags   = MTD_CAP_NORFLASH;
         mtd->name    = map->name;
         mtd->writesize = 1;
@@ -443,6 +446,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
         pr_debug("MTD %s(): write buffer size %d\n", __func__,
                         mtd->writebufsize);
 
+        mtd->_panic_write = cfi_amdstd_panic_write;
         mtd->reboot_notifier.notifier_call = cfi_amdstd_reboot;
 
         if (cfi->cfi_mode==CFI_MODE_CFI){
@@ -770,8 +774,6 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad
 
         case FL_READY:
         case FL_STATUS:
-                /* We should really make set_vpp() count, rather than doing this */
-                DISABLE_VPP(map);
                 break;
         default:
                 printk(KERN_ERR "MTD: put_chip() called with oldstate %d!!\n", chip->oldstate);
@@ -1013,13 +1015,9 @@ static int cfi_amdstd_read (struct mtd_info *mtd, loff_t from, size_t len, size_
         int ret = 0;
 
         /* ofs: offset within the first chip that the first read should start */
-
         chipnum = (from >> cfi->chipshift);
         ofs = from - (chipnum <<  cfi->chipshift);
 
-
-        *retlen = 0;
-
         while (len) {
                 unsigned long thislen;
 
@@ -1097,16 +1095,11 @@ static int cfi_amdstd_secsi_read (struct mtd_info *mtd, loff_t from, size_t len,
         int chipnum;
         int ret = 0;
 
-
         /* ofs: offset within the first chip that the first read should start */
-
         /* 8 secsi bytes per chip */
         chipnum=from>>3;
         ofs=from & 7;
 
-
-        *retlen = 0;
-
         while (len) {
                 unsigned long thislen;
 
@@ -1234,6 +1227,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
         xip_enable(map, chip, adr);
  op_done:
         chip->state = FL_READY;
+        DISABLE_VPP(map);
         put_chip(map, chip, adr);
         mutex_unlock(&chip->mutex);
 
@@ -1251,10 +1245,6 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len,
         unsigned long ofs, chipstart;
         DECLARE_WAITQUEUE(wait, current);
 
-        *retlen = 0;
-        if (!len)
-                return 0;
-
         chipnum = to >> cfi->chipshift;
         ofs = to  - (chipnum << cfi->chipshift);
         chipstart = cfi->chips[chipnum].start;
@@ -1476,6 +1466,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
         ret = -EIO;
  op_done:
         chip->state = FL_READY;
+        DISABLE_VPP(map);
         put_chip(map, chip, adr);
         mutex_unlock(&chip->mutex);
 
@@ -1493,10 +1484,6 @@ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
         int chipnum;
         unsigned long ofs;
 
-        *retlen = 0;
-        if (!len)
-                return 0;
-
         chipnum = to >> cfi->chipshift;
         ofs = to  - (chipnum << cfi->chipshift);
 
@@ -1562,6 +1549,238 @@ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
         return 0;
 }
 
+/*
+ * Wait for the flash chip to become ready to write data
+ *
+ * This is only called during the panic_write() path. When panic_write()
+ * is called, the kernel is in the process of a panic, and will soon be
+ * dead. Therefore we don't take any locks, and attempt to get access
+ * to the chip as soon as possible.
+ */
+static int cfi_amdstd_panic_wait(struct map_info *map, struct flchip *chip,
+                                 unsigned long adr)
+{
+        struct cfi_private *cfi = map->fldrv_priv;
+        int retries = 10;
+        int i;
+
+        /*
+         * If the driver thinks the chip is idle, and no toggle bits
+         * are changing, then the chip is actually idle for sure.
+         */
+        if (chip->state == FL_READY && chip_ready(map, adr))
+                return 0;
+
+        /*
+         * Try several times to reset the chip and then wait for it
+         * to become idle. The upper limit of a few milliseconds of
+         * delay isn't a big problem: the kernel is dying anyway. It
+         * is more important to save the messages.
+         */
+        while (retries > 0) {
+                const unsigned long timeo = (HZ / 1000) + 1;
+
+                /* send the reset command */
+                map_write(map, CMD(0xF0), chip->start);
+
+                /* wait for the chip to become ready */
+                for (i = 0; i < jiffies_to_usecs(timeo); i++) {
+                        if (chip_ready(map, adr))
+                                return 0;
+
+                        udelay(1);
+                }
+        }
+
+        /* the chip never became ready */
+        return -EBUSY;
+}
+
+/*
+ * Write out one word of data to a single flash chip during a kernel panic
+ *
+ * This is only called during the panic_write() path. When panic_write()
+ * is called, the kernel is in the process of a panic, and will soon be
+ * dead. Therefore we don't take any locks, and attempt to get access
+ * to the chip as soon as possible.
+ *
+ * The implementation of this routine is intentionally similar to
+ * do_write_oneword(), in order to ease code maintenance.
+ */
+static int do_panic_write_oneword(struct map_info *map, struct flchip *chip,
+                                  unsigned long adr, map_word datum)
+{
+        const unsigned long uWriteTimeout = (HZ / 1000) + 1;
+        struct cfi_private *cfi = map->fldrv_priv;
+        int retry_cnt = 0;
+        map_word oldd;
+        int ret = 0;
+        int i;
+
+        adr += chip->start;
+
+        ret = cfi_amdstd_panic_wait(map, chip, adr);
+        if (ret)
+                return ret;
+
+        pr_debug("MTD %s(): PANIC WRITE 0x%.8lx(0x%.8lx)\n",
+                        __func__, adr, datum.x[0]);
+
+        /*
+         * Check for a NOP for the case when the datum to write is already
+         * present - it saves time and works around buggy chips that corrupt
+         * data at other locations when 0xff is written to a location that
+         * already contains 0xff.
+         */
+        oldd = map_read(map, adr);
+        if (map_word_equal(map, oldd, datum)) {
+                pr_debug("MTD %s(): NOP\n", __func__);
+                goto op_done;
+        }
+
+        ENABLE_VPP(map);
+
+retry:
+        cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
+        cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
+        cfi_send_gen_cmd(0xA0, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
+        map_write(map, datum, adr);
+
+        for (i = 0; i < jiffies_to_usecs(uWriteTimeout); i++) {
+                if (chip_ready(map, adr))
+                        break;
+
+                udelay(1);
+        }
+
+        if (!chip_good(map, adr, datum)) {
+                /* reset on all failures. */
+                map_write(map, CMD(0xF0), chip->start);
+                /* FIXME - should have reset delay before continuing */
+
+                if (++retry_cnt <= MAX_WORD_RETRIES)
+                        goto retry;
+
+                ret = -EIO;
+        }
+
+op_done:
+        DISABLE_VPP(map);
+        return ret;
+}
+
+/*
+ * Write out some data during a kernel panic
+ *
+ * This is used by the mtdoops driver to save the dying messages from a
+ * kernel which has panic'd.
+ *
+ * This routine ignores all of the locking used throughout the rest of the
+ * driver, in order to ensure that the data gets written out no matter what
+ * state this driver (and the flash chip itself) was in when the kernel crashed.
+ *
+ * The implementation of this routine is intentionally similar to
+ * cfi_amdstd_write_words(), in order to ease code maintenance.
+ */
+static int cfi_amdstd_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
+                                  size_t *retlen, const u_char *buf)
+{
+        struct map_info *map = mtd->priv;
+        struct cfi_private *cfi = map->fldrv_priv;
+        unsigned long ofs, chipstart;
+        int ret = 0;
+        int chipnum;
+
+        chipnum = to >> cfi->chipshift;
+        ofs = to - (chipnum << cfi->chipshift);
+        chipstart = cfi->chips[chipnum].start;
+
+        /* If it's not bus aligned, do the first byte write */
+        if (ofs & (map_bankwidth(map) - 1)) {
+                unsigned long bus_ofs = ofs & ~(map_bankwidth(map) - 1);
+                int i = ofs - bus_ofs;
+                int n = 0;
+                map_word tmp_buf;
+
+                ret = cfi_amdstd_panic_wait(map, &cfi->chips[chipnum], bus_ofs);
+                if (ret)
+                        return ret;
+
+                /* Load 'tmp_buf' with old contents of flash */
+                tmp_buf = map_read(map, bus_ofs + chipstart);
+
+                /* Number of bytes to copy from buffer */
+                n = min_t(int, len, map_bankwidth(map) - i);
+
+                tmp_buf = map_word_load_partial(map, tmp_buf, buf, i, n);
+
+                ret = do_panic_write_oneword(map, &cfi->chips[chipnum],
+                                             bus_ofs, tmp_buf);
+                if (ret)
+                        return ret;
+
+                ofs += n;
+                buf += n;
+                (*retlen) += n;
+                len -= n;
+
+                if (ofs >> cfi->chipshift) {
+                        chipnum++;
+                        ofs = 0;
+                        if (chipnum == cfi->numchips)
+                                return 0;
+                }
+        }
+
+        /* We are now aligned, write as much as possible */
+        while (len >= map_bankwidth(map)) {
+                map_word datum;
+
+                datum = map_word_load(map, buf);
+
+                ret = do_panic_write_oneword(map, &cfi->chips[chipnum],
+                                             ofs, datum);
+                if (ret)
+                        return ret;
+
+                ofs += map_bankwidth(map);
+                buf += map_bankwidth(map);
+                (*retlen) += map_bankwidth(map);
+                len -= map_bankwidth(map);
+
+                if (ofs >> cfi->chipshift) {
+                        chipnum++;
+                        ofs = 0;
+                        if (chipnum == cfi->numchips)
+                                return 0;
+
+                        chipstart = cfi->chips[chipnum].start;
+                }
+        }
+
+        /* Write the trailing bytes if any */
+        if (len & (map_bankwidth(map) - 1)) {
+                map_word tmp_buf;
+
+                ret = cfi_amdstd_panic_wait(map, &cfi->chips[chipnum], ofs);
+                if (ret)
+                        return ret;
+
+                tmp_buf = map_read(map, ofs + chipstart);
+
+                tmp_buf = map_word_load_partial(map, tmp_buf, buf, 0, len);
+
+                ret = do_panic_write_oneword(map, &cfi->chips[chipnum],
+                                             ofs, tmp_buf);
+                if (ret)
+                        return ret;
+
+                (*retlen) += len;
+        }
+
+        return 0;
+}
+
 
 /*
  * Handle devices with one erase region, that only implement
@@ -1649,6 +1868,7 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip *chip)
 
         chip->state = FL_READY;
         xip_enable(map, chip, adr);
+        DISABLE_VPP(map);
         put_chip(map, chip, adr);
         mutex_unlock(&chip->mutex);
 
@@ -1739,6 +1959,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
         }
 
         chip->state = FL_READY;
+        DISABLE_VPP(map);
         put_chip(map, chip, adr);
         mutex_unlock(&chip->mutex);
         return ret;
diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index 85e80180b65b..096993f9711e 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -228,15 +228,15 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map)
                 }
 
         /* Also select the correct geometry setup too */
-        mtd->erase = cfi_staa_erase_varsize;
-        mtd->read = cfi_staa_read;
-        mtd->write = cfi_staa_write_buffers;
-        mtd->writev = cfi_staa_writev;
-        mtd->sync = cfi_staa_sync;
-        mtd->lock = cfi_staa_lock;
-        mtd->unlock = cfi_staa_unlock;
-        mtd->suspend = cfi_staa_suspend;
-        mtd->resume = cfi_staa_resume;
+        mtd->_erase = cfi_staa_erase_varsize;
+        mtd->_read = cfi_staa_read;
+        mtd->_write = cfi_staa_write_buffers;
+        mtd->_writev = cfi_staa_writev;
+        mtd->_sync = cfi_staa_sync;
+        mtd->_lock = cfi_staa_lock;
+        mtd->_unlock = cfi_staa_unlock;
+        mtd->_suspend = cfi_staa_suspend;
+        mtd->_resume = cfi_staa_resume;
         mtd->flags = MTD_CAP_NORFLASH & ~MTD_BIT_WRITEABLE;
         mtd->writesize = 8; /* FIXME: Should be 0 for STMicro flashes w/out ECC */
         mtd->writebufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize;
@@ -394,8 +394,6 @@ static int cfi_staa_read (struct mtd_info *mtd, loff_t from, size_t len, size_t
         chipnum = (from >> cfi->chipshift);
         ofs = from - (chipnum <<  cfi->chipshift);
 
-        *retlen = 0;
-
         while (len) {
                 unsigned long thislen;
 
@@ -617,10 +615,6 @@ static int cfi_staa_write_buffers (struct mtd_info *mtd, loff_t to,
         int chipnum;
         unsigned long ofs;
 
-        *retlen = 0;
-        if (!len)
-                return 0;
-
         chipnum = to >> cfi->chipshift;
         ofs = to  - (chipnum << cfi->chipshift);
 
@@ -904,12 +898,6 @@ static int cfi_staa_erase_varsize(struct mtd_info *mtd,
         int i, first;
         struct mtd_erase_region_info *regions = mtd->eraseregions;
 
-        if (instr->addr > mtd->size)
-                return -EINVAL;
-
-        if ((instr->len + instr->addr) > mtd->size)
-                return -EINVAL;
-
         /* Check that both start and end of the requested erase are
          * aligned with the erasesize at the appropriate addresses.
          */
@@ -1155,9 +1143,6 @@ static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
         if (len & (mtd->erasesize -1))
                 return -EINVAL;
 
-        if ((len + ofs) > mtd->size)
-                return -EINVAL;
-
         chipnum = ofs >> cfi->chipshift;
         adr = ofs - (chipnum << cfi->chipshift);
 
diff --git a/drivers/mtd/chips/cfi_util.c b/drivers/mtd/chips/cfi_util.c
index 8e464054a631..f992418f40a8 100644
--- a/drivers/mtd/chips/cfi_util.c
+++ b/drivers/mtd/chips/cfi_util.c
@@ -173,12 +173,6 @@ int cfi_varsize_frob(struct mtd_info *mtd, varsize_frob_t frob,
         int i, first;
         struct mtd_erase_region_info *regions = mtd->eraseregions;
 
-        if (ofs > mtd->size)
-                return -EINVAL;
-
-        if ((len + ofs) > mtd->size)
-                return -EINVAL;
-
         /* Check that both start and end of the requested erase are
          * aligned with the erasesize at the appropriate addresses.
          */
diff --git a/drivers/mtd/chips/fwh_lock.h b/drivers/mtd/chips/fwh_lock.h
index 89c6595454a5..800b0e853e86 100644
--- a/drivers/mtd/chips/fwh_lock.h
+++ b/drivers/mtd/chips/fwh_lock.h
@@ -101,7 +101,7 @@ static void fixup_use_fwh_lock(struct mtd_info *mtd)
 {
         printk(KERN_NOTICE "using fwh lock/unlock method\n");
         /* Setup for the chips with the fwh lock method */
-        mtd->lock   = fwh_lock_varsize;
-        mtd->unlock = fwh_unlock_varsize;
+        mtd->_lock   = fwh_lock_varsize;
+        mtd->_unlock = fwh_unlock_varsize;
 }
 #endif /* FWH_LOCK_H */
diff --git a/drivers/mtd/chips/map_absent.c b/drivers/mtd/chips/map_absent.c
index f2b872946871..f7a5bca92aef 100644
--- a/drivers/mtd/chips/map_absent.c
+++ b/drivers/mtd/chips/map_absent.c
@@ -55,10 +55,10 @@ static struct mtd_info *map_absent_probe(struct map_info *map)
         mtd->name       = map->name;
         mtd->type       = MTD_ABSENT;
         mtd->size       = map->size;
-        mtd->erase      = map_absent_erase;
-        mtd->read       = map_absent_read;
-        mtd->write      = map_absent_write;
-        mtd->sync       = map_absent_sync;
+        mtd->_erase     = map_absent_erase;
+        mtd->_read      = map_absent_read;
+        mtd->_write     = map_absent_write;
+        mtd->_sync      = map_absent_sync;
         mtd->flags      = 0;
         mtd->erasesize  = PAGE_SIZE;
         mtd->writesize  = 1;
@@ -70,13 +70,11 @@ static struct mtd_info *map_absent_probe(struct map_info *map)
 
 static int map_absent_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
 {
-        *retlen = 0;
         return -ENODEV;
 }
 
 static int map_absent_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
 {
-        *retlen = 0;
         return -ENODEV;
 }
 
diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c
index 67640ccb2d41..991c2a1c05d3 100644
--- a/drivers/mtd/chips/map_ram.c
+++ b/drivers/mtd/chips/map_ram.c
@@ -64,11 +64,11 @@ static struct mtd_info *map_ram_probe(struct map_info *map)
         mtd->name = map->name;
         mtd->type = MTD_RAM;
         mtd->size = map->size;
-        mtd->erase = mapram_erase;
-        mtd->get_unmapped_area = mapram_unmapped_area;
-        mtd->read = mapram_read;
-        mtd->write = mapram_write;
-        mtd->sync = mapram_nop;
+        mtd->_erase = mapram_erase;
+        mtd->_get_unmapped_area = mapram_unmapped_area;
+        mtd->_read = mapram_read;
+        mtd->_write = mapram_write;
+        mtd->_sync = mapram_nop;
         mtd->flags = MTD_CAP_RAM;
         mtd->writesize = 1;
 
@@ -122,14 +122,10 @@ static int mapram_erase (struct mtd_info *mtd, struct erase_info *instr)
         unsigned long i;
 
         allff = map_word_ff(map);
-
         for (i=0; i<instr->len; i += map_bankwidth(map))
                 map_write(map, allff, instr->addr + i);
-
         instr->state = MTD_ERASE_DONE;
-
         mtd_erase_callback(instr);
-
         return 0;
 }
 
diff --git a/drivers/mtd/chips/map_rom.c b/drivers/mtd/chips/map_rom.c
index 593f73d480d2..47a43cf7e5c6 100644
--- a/drivers/mtd/chips/map_rom.c
+++ b/drivers/mtd/chips/map_rom.c
@@ -41,11 +41,11 @@ static struct mtd_info *map_rom_probe(struct map_info *map)
         mtd->name = map->name;
         mtd->type = MTD_ROM;
         mtd->size = map->size;
-        mtd->get_unmapped_area = maprom_unmapped_area;
-        mtd->read = maprom_read;
-        mtd->write = maprom_write;
-        mtd->sync = maprom_nop;
-        mtd->erase = maprom_erase;
+        mtd->_get_unmapped_area = maprom_unmapped_area;
+        mtd->_read = maprom_read;
+        mtd->_write = maprom_write;
+        mtd->_sync = maprom_nop;
+        mtd->_erase = maprom_erase;
         mtd->flags = MTD_CAP_ROM;
         mtd->erasesize = map->size;
         mtd->writesize = 1;
@@ -85,8 +85,7 @@ static void maprom_nop(struct mtd_info *mtd)
 
 static int maprom_write (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
 {
-        printk(KERN_NOTICE "maprom_write called\n");
-        return -EIO;
+        return -EROFS;
 }
 
 static int maprom_erase (struct mtd_info *mtd, struct erase_info *info)
diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig
index 8d3dac40d7e6..4cdb2af7bf44 100644
--- a/drivers/mtd/devices/Kconfig
+++ b/drivers/mtd/devices/Kconfig
@@ -103,6 +103,13 @@ config M25PXX_USE_FAST_READ
         help
           This option enables FAST_READ access supported by ST M25Pxx.
 
+config MTD_SPEAR_SMI
+        tristate "SPEAR MTD NOR Support through SMI controller"
+        depends on PLAT_SPEAR
+        default y
+        help
+          This enable SNOR support on SPEAR platforms using SMI controller
+
 config MTD_SST25L
         tristate "Support SST25L (non JEDEC) SPI Flash chips"
         depends on SPI_MASTER
diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile
index 56c7cd462f11..a4dd1d822b6c 100644
--- a/drivers/mtd/devices/Makefile
+++ b/drivers/mtd/devices/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_MTD_LART)		+= lart.o
 obj-$(CONFIG_MTD_BLOCK2MTD)     += block2mtd.o
 obj-$(CONFIG_MTD_DATAFLASH)     += mtd_dataflash.o
 obj-$(CONFIG_MTD_M25P80)        += m25p80.o
+obj-$(CONFIG_MTD_SPEAR_SMI)     += spear_smi.o
 obj-$(CONFIG_MTD_SST25L)        += sst25l.o
 
 CFLAGS_docg3.o                  += -I$(src)
\ No newline at end of file
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index e7e46d1e7463..a4a80b742e65 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -104,14 +104,6 @@ static int block2mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
         int offset = from & (PAGE_SIZE-1);
         int cpylen;
 
-        if (from > mtd->size)
-                return -EINVAL;
-        if (from + len > mtd->size)
-                len = mtd->size - from;
-
-        if (retlen)
-                *retlen = 0;
-
         while (len) {
                 if ((offset + len) > PAGE_SIZE)
                         cpylen = PAGE_SIZE - offset;    // multiple pages
@@ -148,8 +140,6 @@ static int _block2mtd_write(struct block2mtd_dev *dev, const u_char *buf,
         int offset = to & ~PAGE_MASK;   // page offset
         int cpylen;
 
-        if (retlen)
-                *retlen = 0;
         while (len) {
                 if ((offset+len) > PAGE_SIZE)
                         cpylen = PAGE_SIZE - offset;    // multiple pages
@@ -188,13 +178,6 @@ static int block2mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
         struct block2mtd_dev *dev = mtd->priv;
         int err;
 
-        if (!len)
-                return 0;
-        if (to >= mtd->size)
-                return -ENOSPC;
-        if (to + len > mtd->size)
-                len = mtd->size - to;
-
         mutex_lock(&dev->write_mutex);
         err = _block2mtd_write(dev, buf, to, len, retlen);
         mutex_unlock(&dev->write_mutex);
@@ -283,13 +266,14 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
         dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;
         dev->mtd.erasesize = erase_size;
         dev->mtd.writesize = 1;
+        dev->mtd.writebufsize = PAGE_SIZE;
         dev->mtd.type = MTD_RAM;
         dev->mtd.flags = MTD_CAP_RAM;
-        dev->mtd.erase = block2mtd_erase;
-        dev->mtd.write = block2mtd_write;
-        dev->mtd.writev = mtd_writev;
-        dev->mtd.sync = block2mtd_sync;
-        dev->mtd.read = block2mtd_read;
+        dev->mtd._erase = block2mtd_erase;
+        dev->mtd._write = block2mtd_write;
+        dev->mtd._writev = mtd_writev;
+        dev->mtd._sync = block2mtd_sync;
+        dev->mtd._read = block2mtd_read;
         dev->mtd.priv = dev;
         dev->mtd.owner = THIS_MODULE;
 
diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c
index b1cdf6479019..a4eb8b5b85ec 100644
--- a/drivers/mtd/devices/doc2000.c
+++ b/drivers/mtd/devices/doc2000.c
@@ -562,14 +562,15 @@ void DoC2k_init(struct mtd_info *mtd)
 
         mtd->type = MTD_NANDFLASH;
         mtd->flags = MTD_CAP_NANDFLASH;
-        mtd->writesize = 512;
+        mtd->writebufsize = mtd->writesize = 512;
         mtd->oobsize = 16;
+        mtd->ecc_strength = 2;
         mtd->owner = THIS_MODULE;
-        mtd->erase = doc_erase;
-        mtd->read = doc_read;
-        mtd->write = doc_write;
-        mtd->read_oob = doc_read_oob;
-        mtd->write_oob = doc_write_oob;
+        mtd->_erase = doc_erase;
+        mtd->_read = doc_read;
+        mtd->_write = doc_write;
+        mtd->_read_oob = doc_read_oob;
+        mtd->_write_oob = doc_write_oob;
         this->curfloor = -1;
         this->curchip = -1;
         mutex_init(&this->lock);
@@ -602,13 +603,7 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
         int i, len256 = 0, ret=0;
         size_t left = len;
 
-        /* Don't allow read past end of device */
-        if (from >= this->totlen)
-                return -EINVAL;
-
         mutex_lock(&this->lock);
-
-        *retlen = 0;
         while (left) {
                 len = left;
 
@@ -748,13 +743,7 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
         size_t left = len;
         int status;
 
-        /* Don't allow write past end of device */
-        if (to >= this->totlen)
-                return -EINVAL;
-
         mutex_lock(&this->lock);
-
-        *retlen = 0;
         while (left) {
                 len = left;
 
diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c
index 7543b98f46c4..f6927955dab0 100644
--- a/drivers/mtd/devices/doc2001.c
+++ b/drivers/mtd/devices/doc2001.c
@@ -346,14 +346,15 @@ void DoCMil_init(struct mtd_info *mtd)
 
         /* FIXME: erase size is not always 8KiB */
         mtd->erasesize = 0x2000;
-        mtd->writesize = 512;
+        mtd->writebufsize = mtd->writesize = 512;
         mtd->oobsize = 16;
+        mtd->ecc_strength = 2;
         mtd->owner = THIS_MODULE;
-        mtd->erase = doc_erase;
-        mtd->read = doc_read;
-        mtd->write = doc_write;
-        mtd->read_oob = doc_read_oob;
-        mtd->write_oob = doc_write_oob;
+        mtd->_erase = doc_erase;
+        mtd->_read = doc_read;
+        mtd->_write = doc_write;
+        mtd->_read_oob = doc_read_oob;
+        mtd->_write_oob = doc_write_oob;
         this->curfloor = -1;
         this->curchip = -1;
 
@@ -383,10 +384,6 @@ static int doc_read (struct mtd_info *mtd, loff_t from, size_t len,
         void __iomem *docptr = this->virtadr;
         struct Nand *mychip = &this->chips[from >> (this->chipshift)];
 
-        /* Don't allow read past end of device */
-        if (from >= this->totlen)
-                return -EINVAL;
-
         /* Don't allow a single read to cross a 512-byte block boundary */
         if (from + len > ((from | 0x1ff) + 1))
                 len = ((from | 0x1ff) + 1) - from;
@@ -494,10 +491,6 @@ static int doc_write (struct mtd_info *mtd, loff_t to, size_t len,
         void __iomem *docptr = this->virtadr;
         struct Nand *mychip = &this->chips[to >> (this->chipshift)];
 
-        /* Don't allow write past end of device */
-        if (to >= this->totlen)
-                return -EINVAL;
-
 #if 0
         /* Don't allow a single write to cross a 512-byte block boundary */
         if (to + len > ( (to | 0x1ff) + 1))
@@ -599,7 +592,6 @@ static int doc_write (struct mtd_info *mtd, loff_t to, size_t len,
                 printk("Error programming flash\n");
                 /* Error in programming
                    FIXME: implement Bad Block Replacement (in nftl.c ??) */
-                *retlen = 0;
                 ret = -EIO;
         }
         dummy = ReadDOC(docptr, LastDataRead);
diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c
index 177510d0e7ee..04eb2e4aa50f 100644
--- a/drivers/mtd/devices/doc2001plus.c
+++ b/drivers/mtd/devices/doc2001plus.c
@@ -467,14 +467,15 @@ void DoCMilPlus_init(struct mtd_info *mtd)
 
         mtd->type = MTD_NANDFLASH;
         mtd->flags = MTD_CAP_NANDFLASH;
-        mtd->writesize = 512;
+        mtd->writebufsize = mtd->writesize = 512;
         mtd->oobsize = 16;
+        mtd->ecc_strength = 2;
         mtd->owner = THIS_MODULE;
-        mtd->erase = doc_erase;
-        mtd->read = doc_read;
-        mtd->write = doc_write;
-        mtd->read_oob = doc_read_oob;
-        mtd->write_oob = doc_write_oob;
+        mtd->_erase = doc_erase;
+        mtd->_read = doc_read;
+        mtd->_write = doc_write;
+        mtd->_read_oob = doc_read_oob;
+        mtd->_write_oob = doc_write_oob;
         this->curfloor = -1;
         this->curchip = -1;
 
@@ -581,10 +582,6 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
         void __iomem * docptr = this->virtadr;
         struct Nand *mychip = &this->chips[from >> (this->chipshift)];
 
-        /* Don't allow read past end of device */
-        if (from >= this->totlen)
-                return -EINVAL;
-
         /* Don't allow a single read to cross a 512-byte block boundary */
         if (from + len > ((from | 0x1ff) + 1))
                 len = ((from | 0x1ff) + 1) - from;
@@ -700,10 +697,6 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
         void __iomem * docptr = this->virtadr;
         struct Nand *mychip = &this->chips[to >> (this->chipshift)];
 
-        /* Don't allow write past end of device */
-        if (to >= this->totlen)
-                return -EINVAL;
-
         /* Don't allow writes which aren't exactly one block (512 bytes) */
         if ((to & 0x1ff) || (len != 0x200))
                 return -EINVAL;
@@ -800,7 +793,6 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
                 printk("MTD: Error 0x%x programming at 0x%x\n", dummy, (int)to);
                 /* Error in programming
                    FIXME: implement Bad Block Replacement (in nftl.c ??) */
-                *retlen = 0;
                 ret = -EIO;
         }
         dummy = ReadDOC(docptr, Mplus_LastDataRead);
diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index ad11ef0a81f4..8272c02668d6 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -80,14 +80,9 @@ static struct nand_ecclayout docg3_oobinfo = {
         .oobavail = 8,
 };
 
-/**
- * struct docg3_bch - BCH engine
- */
-static struct bch_control *docg3_bch;
-
 static inline u8 doc_readb(struct docg3 *docg3, u16 reg)
 {
-        u8 val = readb(docg3->base + reg);
+        u8 val = readb(docg3->cascade->base + reg);
 
         trace_docg3_io(0, 8, reg, (int)val);
         return val;
@@ -95,7 +90,7 @@ static inline u8 doc_readb(struct docg3 *docg3, u16 reg)
 
 static inline u16 doc_readw(struct docg3 *docg3, u16 reg)
 {
-        u16 val = readw(docg3->base + reg);
+        u16 val = readw(docg3->cascade->base + reg);
 
         trace_docg3_io(0, 16, reg, (int)val);
         return val;
@@ -103,13 +98,13 @@ static inline u16 doc_readw(struct docg3 *docg3, u16 reg)
 
 static inline void doc_writeb(struct docg3 *docg3, u8 val, u16 reg)
 {
-        writeb(val, docg3->base + reg);
+        writeb(val, docg3->cascade->base + reg);
         trace_docg3_io(1, 8, reg, val);
 }
 
 static inline void doc_writew(struct docg3 *docg3, u16 val, u16 reg)
 {
-        writew(val, docg3->base + reg);
+        writew(val, docg3->cascade->base + reg);
         trace_docg3_io(1, 16, reg, val);
 }
 
@@ -643,7 +638,8 @@ static int doc_ecc_bch_fix_data(struct docg3 *docg3, void *buf, u8 *hwecc)
 
         for (i = 0; i < DOC_ECC_BCH_SIZE; i++)
                 ecc[i] = bitrev8(hwecc[i]);
-        numerrs = decode_bch(docg3_bch, NULL, DOC_ECC_BCH_COVERED_BYTES,
+        numerrs = decode_bch(docg3->cascade->bch, NULL,
+                             DOC_ECC_BCH_COVERED_BYTES,
                              NULL, ecc, NULL, errorpos);
         BUG_ON(numerrs == -EINVAL);
         if (numerrs < 0)
@@ -734,7 +730,7 @@ err:
  * doc_read_page_getbytes - Reads bytes from a prepared page
  * @docg3: the device
  * @len: the number of bytes to be read (must be a multiple of 4)
- * @buf: the buffer to be filled in
+ * @buf: the buffer to be filled in (or NULL is forget bytes)
  * @first: 1 if first time read, DOC_READADDRESS should be set
  *
  */
@@ -849,7 +845,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
                         struct mtd_oob_ops *ops)
 {
         struct docg3 *docg3 = mtd->priv;
-        int block0, block1, page, ret, ofs = 0;
+        int block0, block1, page, ret, skip, ofs = 0;
         u8 *oobbuf = ops->oobbuf;
         u8 *buf = ops->datbuf;
         size_t len, ooblen, nbdata, nboob;
@@ -869,34 +865,36 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
 
         doc_dbg("doc_read_oob(from=%lld, mode=%d, data=(%p:%zu), oob=(%p:%zu))\n",
                 from, ops->mode, buf, len, oobbuf, ooblen);
-        if ((len % DOC_LAYOUT_PAGE_SIZE) || (ooblen % DOC_LAYOUT_OOB_SIZE) ||
-            (from % DOC_LAYOUT_PAGE_SIZE))
+        if (ooblen % DOC_LAYOUT_OOB_SIZE)
                 return -EINVAL;
 
-        ret = -EINVAL;
-        calc_block_sector(from + len, &block0, &block1, &page, &ofs,
-                          docg3->reliable);
-        if (block1 > docg3->max_block)
-                goto err;
+        if (from + len > mtd->size)
+                return -EINVAL;
 
         ops->oobretlen = 0;
         ops->retlen = 0;
         ret = 0;
+        skip = from % DOC_LAYOUT_PAGE_SIZE;
+        mutex_lock(&docg3->cascade->lock);
         while (!ret && (len > 0 || ooblen > 0)) {
-                calc_block_sector(from, &block0, &block1, &page, &ofs,
+                calc_block_sector(from - skip, &block0, &block1, &page, &ofs,
                         docg3->reliable);
-                nbdata = min_t(size_t, len, (size_t)DOC_LAYOUT_PAGE_SIZE);
+                nbdata = min_t(size_t, len, DOC_LAYOUT_PAGE_SIZE - skip);
                 nboob = min_t(size_t, ooblen, (size_t)DOC_LAYOUT_OOB_SIZE);
                 ret = doc_read_page_prepare(docg3, block0, block1, page, ofs);
                 if (ret < 0)
-                        goto err;
+                        goto out;
                 ret = doc_read_page_ecc_init(docg3, DOC_ECC_BCH_TOTAL_BYTES);
                 if (ret < 0)
                         goto err_in_read;
-                ret = doc_read_page_getbytes(docg3, nbdata, buf, 1);
+                ret = doc_read_page_getbytes(docg3, skip, NULL, 1);
+                if (ret < skip)
+                        goto err_in_read;
+                ret = doc_read_page_getbytes(docg3, nbdata, buf, 0);
                 if (ret < nbdata)
                         goto err_in_read;
-                doc_read_page_getbytes(docg3, DOC_LAYOUT_PAGE_SIZE - nbdata,
+                doc_read_page_getbytes(docg3,
+                                       DOC_LAYOUT_PAGE_SIZE - nbdata - skip,
                                        NULL, 0);
                 ret = doc_read_page_getbytes(docg3, nboob, oobbuf, 0);
                 if (ret < nboob)
@@ -950,13 +948,15 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
                 len -= nbdata;
                 ooblen -= nboob;
                 from += DOC_LAYOUT_PAGE_SIZE;
+                skip = 0;
         }
 
+out:
+        mutex_unlock(&docg3->cascade->lock);
         return ret;
 err_in_read:
         doc_read_page_finish(docg3);
-err:
-        return ret;
+        goto out;
 }
 
 /**
@@ -1114,10 +1114,10 @@ static int doc_get_op_status(struct docg3 *docg3)
  */
 static int doc_write_erase_wait_status(struct docg3 *docg3)
 {
-        int status, ret = 0;
+        int i, status, ret = 0;
 
-        if (!doc_is_ready(docg3))
-                usleep_range(3000, 3000);
+        for (i = 0; !doc_is_ready(docg3) && i < 5; i++)
+                msleep(20);
         if (!doc_is_ready(docg3)) {
                 doc_dbg("Timeout reached and the chip is still not ready\n");
                 ret = -EAGAIN;
@@ -1196,18 +1196,19 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *info)
         int block0, block1, page, ret, ofs = 0;
 
         doc_dbg("doc_erase(from=%lld, len=%lld\n", info->addr, info->len);
-        doc_set_device_id(docg3, docg3->device_id);
 
         info->state = MTD_ERASE_PENDING;
         calc_block_sector(info->addr + info->len, &block0, &block1, &page,
                           &ofs, docg3->reliable);
         ret = -EINVAL;
-        if (block1 > docg3->max_block || page || ofs)
+        if (info->addr + info->len > mtd->size || page || ofs)
                 goto reset_err;
 
         ret = 0;
         calc_block_sector(info->addr, &block0, &block1, &page, &ofs,
                           docg3->reliable);
+        mutex_lock(&docg3->cascade->lock);
+        doc_set_device_id(docg3, docg3->device_id);
         doc_set_reliable_mode(docg3);
         for (len = info->len; !ret && len > 0; len -= mtd->erasesize) {
                 info->state = MTD_ERASING;
@@ -1215,6 +1216,7 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *info)
                 block0 += 2;
                 block1 += 2;
         }
+        mutex_unlock(&docg3->cascade->lock);
 
         if (ret)
                 goto reset_err;
@@ -1401,7 +1403,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
                          struct mtd_oob_ops *ops)
 {
         struct docg3 *docg3 = mtd->priv;
-        int block0, block1, page, ret, pofs = 0, autoecc, oobdelta;
+        int ret, autoecc, oobdelta;
         u8 *oobbuf = ops->oobbuf;
         u8 *buf = ops->datbuf;
         size_t len, ooblen;
@@ -1438,12 +1440,8 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
         if (len && ooblen &&
             (len / DOC_LAYOUT_PAGE_SIZE) != (ooblen / oobdelta))
                 return -EINVAL;
-
-        ret = -EINVAL;
-        calc_block_sector(ofs + len, &block0, &block1, &page, &pofs,
-                          docg3->reliable);
-        if (block1 > docg3->max_block)
-                goto err;
+        if (ofs + len > mtd->size)
+                return -EINVAL;
 
         ops->oobretlen = 0;
         ops->retlen = 0;
@@ -1457,6 +1455,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
         if (autoecc < 0)
                 return autoecc;
 
+        mutex_lock(&docg3->cascade->lock);
         while (!ret && len > 0) {
                 memset(oob, 0, sizeof(oob));
                 if (ofs == docg3->oob_write_ofs)
@@ -1477,8 +1476,9 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
                 }
                 ops->retlen += DOC_LAYOUT_PAGE_SIZE;
         }
-err:
+
         doc_set_device_id(docg3, 0);
+        mutex_unlock(&docg3->cascade->lock);
         return ret;
 }
 
@@ -1535,9 +1535,11 @@ static ssize_t dps0_is_key_locked(struct device *dev,
         struct docg3 *docg3 = sysfs_dev2docg3(dev, attr);
         int dps0;
 
+        mutex_lock(&docg3->cascade->lock);
         doc_set_device_id(docg3, docg3->device_id);
         dps0 = doc_register_readb(docg3, DOC_DPS0_STATUS);
         doc_set_device_id(docg3, 0);
+        mutex_unlock(&docg3->cascade->lock);
 
         return sprintf(buf, "%d\n", !(dps0 & DOC_DPS_KEY_OK));
 }
@@ -1548,9 +1550,11 @@ static ssize_t dps1_is_key_locked(struct device *dev,
         struct docg3 *docg3 = sysfs_dev2docg3(dev, attr);
         int dps1;
 
+        mutex_lock(&docg3->cascade->lock);
         doc_set_device_id(docg3, docg3->device_id);
         dps1 = doc_register_readb(docg3, DOC_DPS1_STATUS);
         doc_set_device_id(docg3, 0);
+        mutex_unlock(&docg3->cascade->lock);
 
         return sprintf(buf, "%d\n", !(dps1 & DOC_DPS_KEY_OK));
 }
@@ -1565,10 +1569,12 @@ static ssize_t dps0_insert_key(struct device *dev,
         if (count != DOC_LAYOUT_DPS_KEY_LENGTH)
                 return -EINVAL;
 
+        mutex_lock(&docg3->cascade->lock);
         doc_set_device_id(docg3, docg3->device_id);
         for (i = 0; i < DOC_LAYOUT_DPS_KEY_LENGTH; i++)
                 doc_writeb(docg3, buf[i], DOC_DPS0_KEY);
         doc_set_device_id(docg3, 0);
+        mutex_unlock(&docg3->cascade->lock);
         return count;
 }
 
@@ -1582,10 +1588,12 @@ static ssize_t dps1_insert_key(struct device *dev,
         if (count != DOC_LAYOUT_DPS_KEY_LENGTH)
                 return -EINVAL;
 
+        mutex_lock(&docg3->cascade->lock);
         doc_set_device_id(docg3, docg3->device_id);
         for (i = 0; i < DOC_LAYOUT_DPS_KEY_LENGTH; i++)
                 doc_writeb(docg3, buf[i], DOC_DPS1_KEY);
         doc_set_device_id(docg3, 0);
+        mutex_unlock(&docg3->cascade->lock);
         return count;
 }
 
@@ -1601,13 +1609,13 @@ static struct device_attribute doc_sys_attrs[DOC_MAX_NBFLOORS][4] = {
 };
 
 static int doc_register_sysfs(struct platform_device *pdev,
-                              struct mtd_info **floors)
+                              struct docg3_cascade *cascade)
 {
         int ret = 0, floor, i = 0;
         struct device *dev = &pdev->dev;
 
-        for (floor = 0; !ret && floor < DOC_MAX_NBFLOORS && floors[floor];
-             floor++)
+        for (floor = 0; !ret && floor < DOC_MAX_NBFLOORS &&
+                     cascade->floors[floor]; floor++)
                 for (i = 0; !ret && i < 4; i++)
                         ret = device_create_file(dev, &doc_sys_attrs[floor][i]);
         if (!ret)
@@ -1621,12 +1629,12 @@ static int doc_register_sysfs(struct platform_device *pdev,
 }
 
 static void doc_unregister_sysfs(struct platform_device *pdev,
-                                 struct mtd_info **floors)
+                                 struct docg3_cascade *cascade)
 {
         struct device *dev = &pdev->dev;
         int floor, i;
 
-        for (floor = 0; floor < DOC_MAX_NBFLOORS && floors[floor];
+        for (floor = 0; floor < DOC_MAX_NBFLOORS && cascade->floors[floor];
              floor++)
                 for (i = 0; i < 4; i++)
                         device_remove_file(dev, &doc_sys_attrs[floor][i]);
@@ -1640,7 +1648,11 @@ static int dbg_flashctrl_show(struct seq_file *s, void *p)
         struct docg3 *docg3 = (struct docg3 *)s->private;
 
         int pos = 0;
-        u8 fctrl = doc_register_readb(docg3, DOC_FLASHCONTROL);
+        u8 fctrl;
+
+        mutex_lock(&docg3->cascade->lock);
+        fctrl = doc_register_readb(docg3, DOC_FLASHCONTROL);
+        mutex_unlock(&docg3->cascade->lock);
 
         pos += seq_printf(s,
                  "FlashControl : 0x%02x (%s,CE# %s,%s,%s,flash %s)\n",
@@ -1658,9 +1670,12 @@ static int dbg_asicmode_show(struct seq_file *s, void *p)
 {
         struct docg3 *docg3 = (struct docg3 *)s->private;
 
-        int pos = 0;
-        int pctrl = doc_register_readb(docg3, DOC_ASICMODE);
-        int mode = pctrl & 0x03;
+        int pos = 0, pctrl, mode;
+
+        mutex_lock(&docg3->cascade->lock);
+        pctrl = doc_register_readb(docg3, DOC_ASICMODE);
+        mode = pctrl & 0x03;
+        mutex_unlock(&docg3->cascade->lock);
 
         pos += seq_printf(s,
                          "%04x : RAM_WE=%d,RSTIN_RESET=%d,BDETCT_RESET=%d,WRITE_ENABLE=%d,POWERDOWN=%d,MODE=%d%d (",
@@ -1692,7 +1707,11 @@ static int dbg_device_id_show(struct seq_file *s, void *p)
 {
         struct docg3 *docg3 = (struct docg3 *)s->private;
         int pos = 0;
-        int id = doc_register_readb(docg3, DOC_DEVICESELECT);
+        int id;
+
+        mutex_lock(&docg3->cascade->lock);
+        id = doc_register_readb(docg3, DOC_DEVICESELECT);
+        mutex_unlock(&docg3->cascade->lock);
 
         pos += seq_printf(s, "DeviceId = %d\n", id);
         return pos;
@@ -1705,6 +1724,7 @@ static int dbg_protection_show(struct seq_file *s, void *p)
         int pos = 0;
         int protect, dps0, dps0_low, dps0_high, dps1, dps1_low, dps1_high;
 
+        mutex_lock(&docg3->cascade->lock);
         protect = doc_register_readb(docg3, DOC_PROTECTION);
         dps0 = doc_register_readb(docg3, DOC_DPS0_STATUS);
         dps0_low = doc_register_readw(docg3, DOC_DPS0_ADDRLOW);
@@ -1712,6 +1732,7 @@ static int dbg_protection_show(struct seq_file *s, void *p)
         dps1 = doc_register_readb(docg3, DOC_DPS1_STATUS);
         dps1_low = doc_register_readw(docg3, DOC_DPS1_ADDRLOW);
         dps1_high = doc_register_readw(docg3, DOC_DPS1_ADDRHIGH);
+        mutex_unlock(&docg3->cascade->lock);
 
         pos += seq_printf(s, "Protection = 0x%02x (",
                          protect);
@@ -1804,7 +1825,7 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
 
         switch (chip_id) {
         case DOC_CHIPID_G3:
-                mtd->name = kasprintf(GFP_KERNEL, "DiskOnChip G3 floor %d",
+                mtd->name = kasprintf(GFP_KERNEL, "docg3.%d",
                                       docg3->device_id);
                 docg3->max_block = 2047;
                 break;
@@ -1817,16 +1838,17 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
         mtd->erasesize = DOC_LAYOUT_BLOCK_SIZE * DOC_LAYOUT_NBPLANES;
         if (docg3->reliable == 2)
                 mtd->erasesize /= 2;
-        mtd->writesize = DOC_LAYOUT_PAGE_SIZE;
+        mtd->writebufsize = mtd->writesize = DOC_LAYOUT_PAGE_SIZE;
         mtd->oobsize = DOC_LAYOUT_OOB_SIZE;
         mtd->owner = THIS_MODULE;
-        mtd->erase = doc_erase;
-        mtd->read = doc_read;
-        mtd->write = doc_write;
-        mtd->read_oob = doc_read_oob;
-        mtd->write_oob = doc_write_oob;
-        mtd->block_isbad = doc_block_isbad;
+        mtd->_erase = doc_erase;
+        mtd->_read = doc_read;
+        mtd->_write = doc_write;
+        mtd->_read_oob = doc_read_oob;
+        mtd->_write_oob = doc_write_oob;
+        mtd->_block_isbad = doc_block_isbad;
         mtd->ecclayout = &docg3_oobinfo;
+        mtd->ecc_strength = DOC_ECC_BCH_T;
 }
 
 /**
@@ -1834,6 +1856,7 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
  * @base: the io space where the device is probed
  * @floor: the floor of the probed device
  * @dev: the device
+ * @cascade: the cascade of chips this devices will belong to
  *
  * Checks whether a device at the specified IO range, and floor is available.
  *
@@ -1841,8 +1864,8 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
  * if a memory allocation failed. If floor 0 is checked, a reset of the ASIC is
  * launched.
  */
-static struct mtd_info *doc_probe_device(void __iomem *base, int floor,
-                                         struct device *dev)
+static struct mtd_info * __init
+doc_probe_device(struct docg3_cascade *cascade, int floor, struct device *dev)
 {
         int ret, bbt_nbpages;
         u16 chip_id, chip_id_inv;
@@ -1865,7 +1888,7 @@ static struct mtd_info *doc_probe_device(void __iomem *base, int floor,
 
         docg3->dev = dev;
         docg3->device_id = floor;
-        docg3->base = base;
+        docg3->cascade = cascade;
         doc_set_device_id(docg3, docg3->device_id);
         if (!floor)
                 doc_set_asic_mode(docg3, DOC_ASICMODE_RESET);
@@ -1882,7 +1905,7 @@ static struct mtd_info *doc_probe_device(void __iomem *base, int floor,
         switch (chip_id) {
         case DOC_CHIPID_G3:
                 doc_info("Found a G3 DiskOnChip at addr %p, floor %d\n",
-                         base, floor);
+                         docg3->cascade->base, floor);
                 break;
         default:
                 doc_err("Chip id %04x is not a DiskOnChip G3 chip\n", chip_id);
@@ -1927,10 +1950,12 @@ static void doc_release_device(struct mtd_info *mtd)
 static int docg3_resume(struct platform_device *pdev)
 {
         int i;
+        struct docg3_cascade *cascade;
         struct mtd_info **docg3_floors, *mtd;
         struct docg3 *docg3;
 
-        docg3_floors = platform_get_drvdata(pdev);
+        cascade = platform_get_drvdata(pdev);
+        docg3_floors = cascade->floors;
         mtd = docg3_floors[0];
         docg3 = mtd->priv;
 
@@ -1952,11 +1977,13 @@ static int docg3_resume(struct platform_device *pdev)
 static int docg3_suspend(struct platform_device *pdev, pm_message_t state)
 {
         int floor, i;
+        struct docg3_cascade *cascade;
         struct mtd_info **docg3_floors, *mtd;
         struct docg3 *docg3;
         u8 ctrl, pwr_down;
 
-        docg3_floors = platform_get_drvdata(pdev);
+        cascade = platform_get_drvdata(pdev);
+        docg3_floors = cascade->floors;
         for (floor = 0; floor < DOC_MAX_NBFLOORS; floor++) {
                 mtd = docg3_floors[floor];
                 if (!mtd)
@@ -2006,7 +2033,7 @@ static int __init docg3_probe(struct platform_device *pdev)
         struct resource *ress;
         void __iomem *base;
         int ret, floor, found = 0;
-        struct mtd_info **docg3_floors;
+        struct docg3_cascade *cascade;
 
         ret = -ENXIO;
         ress = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -2017,17 +2044,19 @@ static int __init docg3_probe(struct platform_device *pdev)
         base = ioremap(ress->start, DOC_IOSPACE_SIZE);
 
         ret = -ENOMEM;
-        docg3_floors = kzalloc(sizeof(*docg3_floors) * DOC_MAX_NBFLOORS,
-                               GFP_KERNEL);
-        if (!docg3_floors)
+        cascade = kzalloc(sizeof(*cascade) * DOC_MAX_NBFLOORS,
+                          GFP_KERNEL);
+        if (!cascade)
                 goto nomem1;
-        docg3_bch = init_bch(DOC_ECC_BCH_M, DOC_ECC_BCH_T,
+        cascade->base = base;
+        mutex_init(&cascade->lock);
+        cascade->bch = init_bch(DOC_ECC_BCH_M, DOC_ECC_BCH_T,
                              DOC_ECC_BCH_PRIMPOLY);
-        if (!docg3_bch)
+        if (!cascade->bch)
                 goto nomem2;
 
         for (floor = 0; floor < DOC_MAX_NBFLOORS; floor++) {
-                mtd = doc_probe_device(base, floor, dev);
+                mtd = doc_probe_device(cascade, floor, dev);
                 if (IS_ERR(mtd)) {
                         ret = PTR_ERR(mtd);
                         goto err_probe;
@@ -2038,7 +2067,7 @@ static int __init docg3_probe(struct platform_device *pdev)
                         else
                                 continue;
                 }
-                docg3_floors[floor] = mtd;
+                cascade->floors[floor] = mtd;
                 ret = mtd_device_parse_register(mtd, part_probes, NULL, NULL,
                                                 0);
                 if (ret)
@@ -2046,26 +2075,26 @@ static int __init docg3_probe(struct platform_device *pdev)
                 found++;
         }
 
-        ret = doc_register_sysfs(pdev, docg3_floors);
+        ret = doc_register_sysfs(pdev, cascade);
         if (ret)
                 goto err_probe;
         if (!found)
                 goto notfound;
 
-        platform_set_drvdata(pdev, docg3_floors);
-        doc_dbg_register(docg3_floors[0]->priv);
+        platform_set_drvdata(pdev, cascade);
+        doc_dbg_register(cascade->floors[0]->priv);
         return 0;
 
 notfound:
         ret = -ENODEV;
         dev_info(dev, "No supported DiskOnChip found\n");
 err_probe:
-        free_bch(docg3_bch);
+        kfree(cascade->bch);
         for (floor = 0; floor < DOC_MAX_NBFLOORS; floor++)
-                if (docg3_floors[floor])
-                        doc_release_device(docg3_floors[floor]);
+                if (cascade->floors[floor])
+                        doc_release_device(cascade->floors[floor]);
 nomem2:
-        kfree(docg3_floors);
+        kfree(cascade);
 nomem1:
         iounmap(base);
 noress:
@@ -2080,19 +2109,19 @@ noress:
  */
 static int __exit docg3_release(struct platform_device *pdev)
 {
-        struct mtd_info **docg3_floors = platform_get_drvdata(pdev);
-        struct docg3 *docg3 = docg3_floors[0]->priv;
-        void __iomem *base = docg3->base;
+        struct docg3_cascade *cascade = platform_get_drvdata(pdev);
+        struct docg3 *docg3 = cascade->floors[0]->priv;
+        void __iomem *base = cascade->base;
         int floor;
 
-        doc_unregister_sysfs(pdev, docg3_floors);
+        doc_unregister_sysfs(pdev, cascade);
         doc_dbg_unregister(docg3);
         for (floor = 0; floor < DOC_MAX_NBFLOORS; floor++)
-                if (docg3_floors[floor])
-                        doc_release_device(docg3_floors[floor]);
+                if (cascade->floors[floor])
+                        doc_release_device(cascade->floors[floor]);
 
-        kfree(docg3_floors);
-        free_bch(docg3_bch);
+        free_bch(docg3->cascade->bch);
+        kfree(cascade);
         iounmap(base);
         return 0;
 }
diff --git a/drivers/mtd/devices/docg3.h b/drivers/mtd/devices/docg3.h
index db0da436b493..19fb93f96a3a 100644
--- a/drivers/mtd/devices/docg3.h
+++ b/drivers/mtd/devices/docg3.h
@@ -22,6 +22,8 @@
 #ifndef _MTD_DOCG3_H
 #define _MTD_DOCG3_H
 
+#include <linux/mtd/mtd.h>
+
 /*
  * Flash memory areas :
  *   - 0x0000 .. 0x07ff : IPL
@@ -267,9 +269,23 @@
 #define DOC_LAYOUT_DPS_KEY_LENGTH       8
 
 /**
+ * struct docg3_cascade - Cascade of 1 to 4 docg3 chips
+ * @floors: floors (ie. one physical docg3 chip is one floor)
+ * @base: IO space to access all chips in the cascade
+ * @bch: the BCH correcting control structure
+ * @lock: lock to protect docg3 IO space from concurrent accesses
+ */
+struct docg3_cascade {
+        struct mtd_info *floors[DOC_MAX_NBFLOORS];
+        void __iomem *base;
+        struct bch_control *bch;
+        struct mutex lock;
+};
+
+/**
  * struct docg3 - DiskOnChip driver private data
  * @dev: the device currently under control
- * @base: mapped IO space
+ * @cascade: the cascade this device belongs to
  * @device_id: number of the cascaded DoCG3 device (0, 1, 2 or 3)
  * @if_cfg: if true, reads are on 16bits, else reads are on 8bits
 
@@ -287,7 +303,7 @@
  */
 struct docg3 {
         struct device *dev;
-        void __iomem *base;
+        struct docg3_cascade *cascade;
         unsigned int device_id:4;
         unsigned int if_cfg:1;
         unsigned int reliable:2;
diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c
index 3a11ea628e58..82bd00af5cc3 100644
--- a/drivers/mtd/devices/lart.c
+++ b/drivers/mtd/devices/lart.c
@@ -367,9 +367,6 @@ static int flash_erase (struct mtd_info *mtd,struct erase_info *instr)
    printk (KERN_DEBUG "%s(addr = 0x%.8x, len = %d)\n", __func__, instr->addr, instr->len);
 #endif
 
-   /* sanity checks */
-   if (instr->addr + instr->len > mtd->size) return (-EINVAL);
-
    /*
         * check that both start and end of the requested erase are
         * aligned with the erasesize at the appropriate addresses.
@@ -440,10 +437,6 @@ static int flash_read (struct mtd_info *mtd,loff_t from,size_t len,size_t *retle
    printk (KERN_DEBUG "%s(from = 0x%.8x, len = %d)\n", __func__, (__u32)from, len);
 #endif
 
-   /* sanity checks */
-   if (!len) return (0);
-   if (from + len > mtd->size) return (-EINVAL);
-
    /* we always read len bytes */
    *retlen = len;
 
@@ -522,11 +515,8 @@ static int flash_write (struct mtd_info *mtd,loff_t to,size_t len,size_t *retlen
    printk (KERN_DEBUG "%s(to = 0x%.8x, len = %d)\n", __func__, (__u32)to, len);
 #endif
 
-   *retlen = 0;
-
    /* sanity checks */
    if (!len) return (0);
-   if (to + len > mtd->size) return (-EINVAL);
 
    /* first, we write a 0xFF.... padded byte until we reach a dword boundary */
    if (to & (BUSWIDTH - 1))
@@ -630,14 +620,15 @@ static int __init lart_flash_init (void)
    mtd.name = module_name;
    mtd.type = MTD_NORFLASH;
    mtd.writesize = 1;
+   mtd.writebufsize = 4;
    mtd.flags = MTD_CAP_NORFLASH;
    mtd.size = FLASH_BLOCKSIZE_PARAM * FLASH_NUMBLOCKS_16m_PARAM + FLASH_BLOCKSIZE_MAIN * FLASH_NUMBLOCKS_16m_MAIN;
    mtd.erasesize = FLASH_BLOCKSIZE_MAIN;
    mtd.numeraseregions = ARRAY_SIZE(erase_regions);
    mtd.eraseregions = erase_regions;
-   mtd.erase = flash_erase;
-   mtd.read = flash_read;
-   mtd.write = flash_write;
+   mtd._erase = flash_erase;
+   mtd._read = flash_read;
+   mtd._write = flash_write;
    mtd.owner = THIS_MODULE;
 
 #ifdef LART_DEBUG
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 7c60dddbefc0..1924d247c1cb 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -288,9 +288,6 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr)
                         __func__, (long long)instr->addr,
                         (long long)instr->len);
 
-        /* sanity checks */
-        if (instr->addr + instr->len > flash->mtd.size)
-                return -EINVAL;
         div_u64_rem(instr->len, mtd->erasesize, &rem);
         if (rem)
                 return -EINVAL;
@@ -349,13 +346,6 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
         pr_debug("%s: %s from 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
                         __func__, (u32)from, len);
 
-        /* sanity checks */
-        if (!len)
-                return 0;
-
-        if (from + len > flash->mtd.size)
-                return -EINVAL;
-
         spi_message_init(&m);
         memset(t, 0, (sizeof t));
 
@@ -371,9 +361,6 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
         t[1].len = len;
         spi_message_add_tail(&t[1], &m);
 
-        /* Byte count starts at zero. */
-        *retlen = 0;
-
         mutex_lock(&flash->lock);
 
         /* Wait till previous write/erase is done. */
@@ -417,15 +404,6 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len,
         pr_debug("%s: %s to 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
                         __func__, (u32)to, len);
 
-        *retlen = 0;
-
-        /* sanity checks */
-        if (!len)
-                return(0);
-
-        if (to + len > flash->mtd.size)
-                return -EINVAL;
-
         spi_message_init(&m);
         memset(t, 0, (sizeof t));
 
@@ -509,15 +487,6 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len,
         pr_debug("%s: %s to 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
                         __func__, (u32)to, len);
 
-        *retlen = 0;
-
-        /* sanity checks */
-        if (!len)
-                return 0;
-
-        if (to + len > flash->mtd.size)
-                return -EINVAL;
-
         spi_message_init(&m);
         memset(t, 0, (sizeof t));
 
@@ -908,14 +877,14 @@ static int __devinit m25p_probe(struct spi_device *spi)
         flash->mtd.writesize = 1;
         flash->mtd.flags = MTD_CAP_NORFLASH;
         flash->mtd.size = info->sector_size * info->n_sectors;
-        flash->mtd.erase = m25p80_erase;
-        flash->mtd.read = m25p80_read;
+        flash->mtd._erase = m25p80_erase;
+        flash->mtd._read = m25p80_read;
 
         /* sst flash chips use AAI word program */
         if (JEDEC_MFR(info->jedec_id) == CFI_MFR_SST)
-                flash->mtd.write = sst_write;
+                flash->mtd._write = sst_write;
         else
-                flash->mtd.write = m25p80_write;
+                flash->mtd._write = m25p80_write;
 
         /* prefer "small sector" erase if possible */
         if (info->flags & SECT_4K) {
@@ -932,6 +901,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
         ppdata.of_node = spi->dev.of_node;
         flash->mtd.dev.parent = &spi->dev;
         flash->page_size = info->page_size;
+        flash->mtd.writebufsize = flash->page_size;
 
         if (info->addr_width)
                 flash->addr_width = info->addr_width;
@@ -1004,21 +974,7 @@ static struct spi_driver m25p80_driver = {
          */
 };
 
-
-static int __init m25p80_init(void)
-{
-        return spi_register_driver(&m25p80_driver);
-}
-
-
-static void __exit m25p80_exit(void)
-{
-        spi_unregister_driver(&m25p80_driver);
-}
-
-
-module_init(m25p80_init);
-module_exit(m25p80_exit);
+module_spi_driver(m25p80_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Mike Lavender");
diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c
index 8423fb6d4f26..182849d39c61 100644
--- a/drivers/mtd/devices/ms02-nv.c
+++ b/drivers/mtd/devices/ms02-nv.c
@@ -59,12 +59,8 @@ static int ms02nv_read(struct mtd_info *mtd, loff_t from,
 {
         struct ms02nv_private *mp = mtd->priv;
 
-        if (from + len > mtd->size)
-                return -EINVAL;
-
         memcpy(buf, mp->uaddr + from, len);
         *retlen = len;
-
         return 0;
 }
 
@@ -73,12 +69,8 @@ static int ms02nv_write(struct mtd_info *mtd, loff_t to,
 {
         struct ms02nv_private *mp = mtd->priv;
 
-        if (to + len > mtd->size)
-                return -EINVAL;
-
         memcpy(mp->uaddr + to, buf, len);
         *retlen = len;
-
         return 0;
 }
 
@@ -215,8 +207,8 @@ static int __init ms02nv_init_one(ulong addr)
         mtd->size = fixsize;
         mtd->name = (char *)ms02nv_name;
         mtd->owner = THIS_MODULE;
-        mtd->read = ms02nv_read;
-        mtd->write = ms02nv_write;
+        mtd->_read = ms02nv_read;
+        mtd->_write = ms02nv_write;
         mtd->writesize = 1;
 
         ret = -EIO;
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index 236057ead0d2..928fb0e6d73a 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -164,9 +164,6 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
               dev_name(&spi->dev), (long long)instr->addr,
               (long long)instr->len);
 
-        /* Sanity checks */
-        if (instr->addr + instr->len > mtd->size)
-                return -EINVAL;
         div_u64_rem(instr->len, priv->page_size, &rem);
         if (rem)
                 return -EINVAL;
@@ -252,14 +249,6 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len,
         pr_debug("%s: read 0x%x..0x%x\n", dev_name(&priv->spi->dev),
                         (unsigned)from, (unsigned)(from + len));
 
-        *retlen = 0;
-
-        /* Sanity checks */
-        if (!len)
-                return 0;
-        if (from + len > mtd->size)
-                return -EINVAL;
-
         /* Calculate flash page/byte address */
         addr = (((unsigned)from / priv->page_size) << priv->page_offset)
                 + ((unsigned)from % priv->page_size);
@@ -328,14 +317,6 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
         pr_debug("%s: write 0x%x..0x%x\n",
                 dev_name(&spi->dev), (unsigned)to, (unsigned)(to + len));
 
-        *retlen = 0;
-
-        /* Sanity checks */
-        if (!len)
-                return 0;
-        if ((to + len) > mtd->size)
-                return -EINVAL;
-
         spi_message_init(&msg);
 
         x[0].tx_buf = command = priv->command;
@@ -490,8 +471,6 @@ static ssize_t otp_read(struct spi_device *spi, unsigned base,
 
         if ((off + len) > 64)
                 len = 64 - off;
-        if (len == 0)
-                return len;
 
         spi_message_init(&m);
 
@@ -611,16 +590,16 @@ static int dataflash_write_user_otp(struct mtd_info *mtd,
 
 static char *otp_setup(struct mtd_info *device, char revision)
 {
-        device->get_fact_prot_info = dataflash_get_otp_info;
-        device->read_fact_prot_reg = dataflash_read_fact_otp;
-        device->get_user_prot_info = dataflash_get_otp_info;
-        device->read_user_prot_reg = dataflash_read_user_otp;
+        device->_get_fact_prot_info = dataflash_get_otp_info;
+        device->_read_fact_prot_reg = dataflash_read_fact_otp;
+        device->_get_user_prot_info = dataflash_get_otp_info;
+        device->_read_user_prot_reg = dataflash_read_user_otp;
 
         /* rev c parts (at45db321c and at45db1281 only!) use a
          * different write procedure; not (yet?) implemented.
          */
         if (revision > 'c')
-                device->write_user_prot_reg = dataflash_write_user_otp;
+                device->_write_user_prot_reg = dataflash_write_user_otp;
 
         return ", OTP";
 }
@@ -672,9 +651,9 @@ add_dataflash_otp(struct spi_device *spi, char *name,
         device->owner = THIS_MODULE;
         device->type = MTD_DATAFLASH;
         device->flags = MTD_WRITEABLE;
-        device->erase = dataflash_erase;
-        device->read = dataflash_read;
-        device->write = dataflash_write;
+        device->_erase = dataflash_erase;
+        device->_read = dataflash_read;
+        device->_write = dataflash_write;
         device->priv = priv;
 
         device->dev.parent = &spi->dev;
@@ -946,18 +925,7 @@ static struct spi_driver dataflash_driver = {
         /* FIXME:  investigate suspend and resume... */
 };
 
-static int __init dataflash_init(void)
-{
-        return spi_register_driver(&dataflash_driver);
-}
-module_init(dataflash_init);
-
-static void __exit dataflash_exit(void)
-{
-        spi_unregister_driver(&dataflash_driver);
-}
-module_exit(dataflash_exit);
-
+module_spi_driver(dataflash_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Andrew Victor, David Brownell");
diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c
index 2562689ba6b4..ec59d65897fb 100644
--- a/drivers/mtd/devices/mtdram.c
+++ b/drivers/mtd/devices/mtdram.c
@@ -34,34 +34,23 @@ static struct mtd_info *mtd_info;
 
 static int ram_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
-        if (instr->addr + instr->len > mtd->size)
-                return -EINVAL;
-
         memset((char *)mtd->priv + instr->addr, 0xff, instr->len);
-
         instr->state = MTD_ERASE_DONE;
         mtd_erase_callback(instr);
-
         return 0;
 }
 
 static int ram_point(struct mtd_info *mtd, loff_t from, size_t len,
                 size_t *retlen, void **virt, resource_size_t *phys)
 {
-        if (from + len > mtd->size)
-                return -EINVAL;
-
-        /* can we return a physical address with this driver? */
-        if (phys)
-                return -EINVAL;
-
         *virt = mtd->priv + from;
         *retlen = len;
         return 0;
 }
 
-static void ram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+static int ram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
+        return 0;
 }
 
 /*
@@ -80,11 +69,7 @@ static unsigned long ram_get_unmapped_area(struct mtd_info *mtd,
 static int ram_read(struct mtd_info *mtd, loff_t from, size_t len,
                 size_t *retlen, u_char *buf)
 {
-        if (from + len > mtd->size)
-                return -EINVAL;
-
         memcpy(buf, mtd->priv + from, len);
-
         *retlen = len;
         return 0;
 }
@@ -92,11 +77,7 @@ static int ram_read(struct mtd_info *mtd, loff_t from, size_t len,
 static int ram_write(struct mtd_info *mtd, loff_t to, size_t len,
                 size_t *retlen, const u_char *buf)
 {
-        if (to + len > mtd->size)
-                return -EINVAL;
-
         memcpy((char *)mtd->priv + to, buf, len);
-
         *retlen = len;
         return 0;
 }
@@ -126,12 +107,12 @@ int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,
         mtd->priv = mapped_address;
 
         mtd->owner = THIS_MODULE;
-        mtd->erase = ram_erase;
-        mtd->point = ram_point;
-        mtd->unpoint = ram_unpoint;
-        mtd->get_unmapped_area = ram_get_unmapped_area;
-        mtd->read = ram_read;
-        mtd->write = ram_write;
+        mtd->_erase = ram_erase;
+        mtd->_point = ram_point;
+        mtd->_unpoint = ram_unpoint;
+        mtd->_get_unmapped_area = ram_get_unmapped_area;
+        mtd->_read = ram_read;
+        mtd->_write = ram_write;
 
         if (mtd_device_register(mtd, NULL, 0))
                 return -EIO;
diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c
index 23423bd00b06..67823de68db6 100644
--- a/drivers/mtd/devices/phram.c
+++ b/drivers/mtd/devices/phram.c
@@ -33,45 +33,33 @@ struct phram_mtd_list {
 
 static LIST_HEAD(phram_list);
 
-
 static int phram_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
         u_char *start = mtd->priv;
 
-        if (instr->addr + instr->len > mtd->size)
-                return -EINVAL;
-
         memset(start + instr->addr, 0xff, instr->len);
 
-        /* This'll catch a few races. Free the thing before returning :)
+        /*
+         * This'll catch a few races. Free the thing before returning :)
          * I don't feel at all ashamed. This kind of thing is possible anyway
          * with flash, but unlikely.
          */
-
         instr->state = MTD_ERASE_DONE;
-
         mtd_erase_callback(instr);
-
         return 0;
 }
 
 static int phram_point(struct mtd_info *mtd, loff_t from, size_t len,
                 size_t *retlen, void **virt, resource_size_t *phys)
 {
-        if (from + len > mtd->size)
-                return -EINVAL;
-
-        /* can we return a physical address with this driver? */
-        if (phys)
-                return -EINVAL;
-
         *virt = mtd->priv + from;
         *retlen = len;
         return 0;
 }
 
-static void phram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+static int phram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
+        return 0;
 }
 
 static int phram_read(struct mtd_info *mtd, loff_t from, size_t len,
@@ -79,14 +67,7 @@ static int phram_read(struct mtd_info *mtd, loff_t from, size_t len,
 {
         u_char *start = mtd->priv;
 
-        if (from >= mtd->size)
-                return -EINVAL;
-
-        if (len > mtd->size - from)
-                len = mtd->size - from;
-
         memcpy(buf, start + from, len);
-
         *retlen = len;
         return 0;
 }
@@ -96,20 +77,11 @@ static int phram_write(struct mtd_info *mtd, loff_t to, size_t len,
 {
         u_char *start = mtd->priv;
 
-        if (to >= mtd->size)
-                return -EINVAL;
-
-        if (len > mtd->size - to)
-                len = mtd->size - to;
-
         memcpy(start + to, buf, len);
-
         *retlen = len;
         return 0;
 }
 
-
-
 static void unregister_devices(void)
 {
         struct phram_mtd_list *this, *safe;
@@ -142,11 +114,11 @@ static int register_device(char *name, unsigned long start, unsigned long len)
         new->mtd.name = name;
         new->mtd.size = len;
         new->mtd.flags = MTD_CAP_RAM;
-        new->mtd.erase = phram_erase;
-        new->mtd.point = phram_point;
-        new->mtd.unpoint = phram_unpoint;
-        new->mtd.read = phram_read;
-        new->mtd.write = phram_write;
+        new->mtd._erase = phram_erase;
+        new->mtd._point = phram_point;
+        new->mtd._unpoint = phram_unpoint;
+        new->mtd._read = phram_read;
+        new->mtd._write = phram_write;
         new->mtd.owner = THIS_MODULE;
         new->mtd.type = MTD_RAM;
         new->mtd.erasesize = PAGE_SIZE;
@@ -233,7 +205,17 @@ static inline void kill_final_newline(char *str)
         return 1;               \
 } while (0)
 
-static int phram_setup(const char *val, struct kernel_param *kp)
+/*
+ * This shall contain the module parameter if any. It is of the form:
+ * - phram=<device>,<address>,<size> for module case
+ * - phram.phram=<device>,<address>,<size> for built-in case
+ * We leave 64 bytes for the device name, 12 for the address and 12 for the
+ * size.
+ * Example: phram.phram=rootfs,0xa0000000,512Mi
+ */
+static __initdata char phram_paramline[64+12+12];
+
+static int __init phram_setup(const char *val)
 {
         char buf[64+12+12], *str = buf;
         char *token[3];
@@ -282,12 +264,28 @@ static int phram_setup(const char *val, struct kernel_param *kp)
         return ret;
 }
 
-module_param_call(phram, phram_setup, NULL, NULL, 000);
+static int __init phram_param_call(const char *val, struct kernel_param *kp)
+{
+        /*
+         * This function is always called before 'init_phram()', whether
+         * built-in or module.
+         */
+        if (strlen(val) >= sizeof(phram_paramline))
+                return -ENOSPC;
+        strcpy(phram_paramline, val);
+
+        return 0;
+}
+
+module_param_call(phram, phram_param_call, NULL, NULL, 000);
 MODULE_PARM_DESC(phram, "Memory region to map. \"phram=<name>,<start>,<length>\"");
 
 
 static int __init init_phram(void)
 {
+        if (phram_paramline[0])
+                return phram_setup(phram_paramline);
+
         return 0;
 }
 
diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c
index 5d53c5760a6c..0c51b988e1f8 100644
--- a/drivers/mtd/devices/pmc551.c
+++ b/drivers/mtd/devices/pmc551.c
@@ -94,12 +94,48 @@
 #include <linux/ioctl.h>
 #include <asm/io.h>
 #include <linux/pci.h>
-
 #include <linux/mtd/mtd.h>
-#include <linux/mtd/pmc551.h>
+
+#define PMC551_VERSION \
+        "Ramix PMC551 PCI Mezzanine Ram Driver. (C) 1999,2000 Nortel Networks.\n"
+
+#define PCI_VENDOR_ID_V3_SEMI 0x11b0
+#define PCI_DEVICE_ID_V3_SEMI_V370PDC 0x0200
+
+#define PMC551_PCI_MEM_MAP0 0x50
+#define PMC551_PCI_MEM_MAP1 0x54
+#define PMC551_PCI_MEM_MAP_MAP_ADDR_MASK 0x3ff00000
+#define PMC551_PCI_MEM_MAP_APERTURE_MASK 0x000000f0
+#define PMC551_PCI_MEM_MAP_REG_EN 0x00000002
+#define PMC551_PCI_MEM_MAP_ENABLE 0x00000001
+
+#define PMC551_SDRAM_MA  0x60
+#define PMC551_SDRAM_CMD 0x62
+#define PMC551_DRAM_CFG  0x64
+#define PMC551_SYS_CTRL_REG 0x78
+
+#define PMC551_DRAM_BLK0 0x68
+#define PMC551_DRAM_BLK1 0x6c
+#define PMC551_DRAM_BLK2 0x70
+#define PMC551_DRAM_BLK3 0x74
+#define PMC551_DRAM_BLK_GET_SIZE(x) (524288 << ((x >> 4) & 0x0f))
+#define PMC551_DRAM_BLK_SET_COL_MUX(x, v) (((x) & ~0x00007000) | (((v) & 0x7) << 12))
+#define PMC551_DRAM_BLK_SET_ROW_MUX(x, v) (((x) & ~0x00000f00) | (((v) & 0xf) << 8))
+
+struct mypriv {
+        struct pci_dev *dev;
+        u_char *start;
+        u32 base_map0;
+        u32 curr_map0;
+        u32 asize;
+        struct mtd_info *nextpmc551;
+};
 
 static struct mtd_info *pmc551list;
 
+static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
+                        size_t *retlen, void **virt, resource_size_t *phys);
+
 static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
         struct mypriv *priv = mtd->priv;
@@ -115,16 +151,6 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
 #endif
 
         end = instr->addr + instr->len - 1;
-
-        /* Is it past the end? */
-        if (end > mtd->size) {
-#ifdef CONFIG_MTD_PMC551_DEBUG
-                printk(KERN_DEBUG "pmc551_erase() out of bounds (%ld > %ld)\n",
-                        (long)end, (long)mtd->size);
-#endif
-                return -EINVAL;
-        }
-
         eoff_hi = end & ~(priv->asize - 1);
         soff_hi = instr->addr & ~(priv->asize - 1);
         eoff_lo = end & (priv->asize - 1);
@@ -178,18 +204,6 @@ static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
         printk(KERN_DEBUG "pmc551_point(%ld, %ld)\n", (long)from, (long)len);
 #endif
 
-        if (from + len > mtd->size) {
-#ifdef CONFIG_MTD_PMC551_DEBUG
-                printk(KERN_DEBUG "pmc551_point() out of bounds (%ld > %ld)\n",
-                        (long)from + len, (long)mtd->size);
-#endif
-                return -EINVAL;
-        }
-
-        /* can we return a physical address with this driver? */
-        if (phys)
-                return -EINVAL;
-
         soff_hi = from & ~(priv->asize - 1);
         soff_lo = from & (priv->asize - 1);
 
@@ -205,11 +219,12 @@ static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
         return 0;
 }
 
-static void pmc551_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+static int pmc551_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
 #ifdef CONFIG_MTD_PMC551_DEBUG
         printk(KERN_DEBUG "pmc551_unpoint()\n");
 #endif
+        return 0;
 }
 
 static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
@@ -228,16 +243,6 @@ static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
 #endif
 
         end = from + len - 1;
-
-        /* Is it past the end? */
-        if (end > mtd->size) {
-#ifdef CONFIG_MTD_PMC551_DEBUG
-                printk(KERN_DEBUG "pmc551_read() out of bounds (%ld > %ld)\n",
-                        (long)end, (long)mtd->size);
-#endif
-                return -EINVAL;
-        }
-
         soff_hi = from & ~(priv->asize - 1);
         eoff_hi = end & ~(priv->asize - 1);
         soff_lo = from & (priv->asize - 1);
@@ -295,16 +300,6 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
 #endif
 
         end = to + len - 1;
-        /* Is it past the end?  or did the u32 wrap? */
-        if (end > mtd->size) {
-#ifdef CONFIG_MTD_PMC551_DEBUG
-                printk(KERN_DEBUG "pmc551_write() out of bounds (end: %ld, "
-                        "size: %ld, to: %ld)\n", (long)end, (long)mtd->size,
-                        (long)to);
-#endif
-                return -EINVAL;
-        }
-
         soff_hi = to & ~(priv->asize - 1);
         eoff_hi = end & ~(priv->asize - 1);
         soff_lo = to & (priv->asize - 1);
@@ -358,7 +353,7 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
  * mechanism
  * returns the size of the memory region found.
  */
-static u32 fixup_pmc551(struct pci_dev *dev)
+static int fixup_pmc551(struct pci_dev *dev)
 {
 #ifdef CONFIG_MTD_PMC551_BUGFIX
         u32 dram_data;
@@ -668,7 +663,7 @@ static int __init init_pmc551(void)
         struct mypriv *priv;
         int found = 0;
         struct mtd_info *mtd;
-        u32 length = 0;
+        int length = 0;
 
         if (msize) {
                 msize = (1 << (ffs(msize) - 1)) << 20;
@@ -786,11 +781,11 @@ static int __init init_pmc551(void)
 
                 mtd->size = msize;
                 mtd->flags = MTD_CAP_RAM;
-                mtd->erase = pmc551_erase;
-                mtd->read = pmc551_read;
-                mtd->write = pmc551_write;
-                mtd->point = pmc551_point;
-                mtd->unpoint = pmc551_unpoint;
+                mtd->_erase = pmc551_erase;
+                mtd->_read = pmc551_read;
+                mtd->_write = pmc551_write;
+                mtd->_point = pmc551_point;
+                mtd->_unpoint = pmc551_unpoint;
                 mtd->type = MTD_RAM;
                 mtd->name = "PMC551 RAM board";
                 mtd->erasesize = 0x10000;
diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c
index 288594163c22..8f52fc858e48 100644
--- a/drivers/mtd/devices/slram.c
+++ b/drivers/mtd/devices/slram.c
@@ -75,7 +75,7 @@ static slram_mtd_list_t *slram_mtdlist = NULL;
 static int slram_erase(struct mtd_info *, struct erase_info *);
 static int slram_point(struct mtd_info *, loff_t, size_t, size_t *, void **,
                 resource_size_t *);
-static void slram_unpoint(struct mtd_info *, loff_t, size_t);
+static int slram_unpoint(struct mtd_info *, loff_t, size_t);
 static int slram_read(struct mtd_info *, loff_t, size_t, size_t *, u_char *);
 static int slram_write(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
 
@@ -83,21 +83,13 @@ static int slram_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
         slram_priv_t *priv = mtd->priv;
 
-        if (instr->addr + instr->len > mtd->size) {
-                return(-EINVAL);
-        }
-
         memset(priv->start + instr->addr, 0xff, instr->len);
-
         /* This'll catch a few races. Free the thing before returning :)
          * I don't feel at all ashamed. This kind of thing is possible anyway
          * with flash, but unlikely.
          */
-
         instr->state = MTD_ERASE_DONE;
-
         mtd_erase_callback(instr);
-
         return(0);
 }
 
@@ -106,20 +98,14 @@ static int slram_point(struct mtd_info *mtd, loff_t from, size_t len,
 {
         slram_priv_t *priv = mtd->priv;
 
-        /* can we return a physical address with this driver? */
-        if (phys)
-                return -EINVAL;
-
-        if (from + len > mtd->size)
-                return -EINVAL;
-
         *virt = priv->start + from;
         *retlen = len;
         return(0);
 }
 
-static void slram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+static int slram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
+        return 0;
 }
 
 static int slram_read(struct mtd_info *mtd, loff_t from, size_t len,
@@ -127,14 +113,7 @@ static int slram_read(struct mtd_info *mtd, loff_t from, size_t len,
 {
         slram_priv_t *priv = mtd->priv;
 
-        if (from > mtd->size)
-                return -EINVAL;
-
-        if (from + len > mtd->size)
-                len = mtd->size - from;
-
         memcpy(buf, priv->start + from, len);
-
         *retlen = len;
         return(0);
 }
@@ -144,11 +123,7 @@ static int slram_write(struct mtd_info *mtd, loff_t to, size_t len,
 {
         slram_priv_t *priv = mtd->priv;
 
-        if (to + len > mtd->size)
-                return -EINVAL;
-
         memcpy(priv->start + to, buf, len);
-
         *retlen = len;
         return(0);
 }
@@ -199,11 +174,11 @@ static int register_device(char *name, unsigned long start, unsigned long length
         (*curmtd)->mtdinfo->name = name;
         (*curmtd)->mtdinfo->size = length;
         (*curmtd)->mtdinfo->flags = MTD_CAP_RAM;
-        (*curmtd)->mtdinfo->erase = slram_erase;
-        (*curmtd)->mtdinfo->point = slram_point;
-        (*curmtd)->mtdinfo->unpoint = slram_unpoint;
-        (*curmtd)->mtdinfo->read = slram_read;
-        (*curmtd)->mtdinfo->write = slram_write;
+        (*curmtd)->mtdinfo->_erase = slram_erase;
+        (*curmtd)->mtdinfo->_point = slram_point;
+        (*curmtd)->mtdinfo->_unpoint = slram_unpoint;
+        (*curmtd)->mtdinfo->_read = slram_read;
+        (*curmtd)->mtdinfo->_write = slram_write;
         (*curmtd)->mtdinfo->owner = THIS_MODULE;
         (*curmtd)->mtdinfo->type = MTD_RAM;
         (*curmtd)->mtdinfo->erasesize = SLRAM_BLK_SZ;
diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c
new file mode 100644
index 000000000000..797d43cd3550
--- /dev/null
+++ b/drivers/mtd/devices/spear_smi.c
@@ -0,0 +1,1147 @@
+/*
+ * SMI (Serial Memory Controller) device driver for Serial NOR Flash on
+ * SPEAr platform
+ * The serial nor interface is largely based on drivers/mtd/m25p80.c,
+ * however the SPI interface has been replaced by SMI.
+ *
+ * Copyright © 2010 STMicroelectronics.
+ * Ashish Priyadarshi
+ * Shiraz Hashim <shiraz.hashim@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/param.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/spear_smi.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+/* SMI clock rate */
+#define SMI_MAX_CLOCK_FREQ      50000000 /* 50 MHz */
+
+/* MAX time out to safely come out of a erase or write busy conditions */
+#define SMI_PROBE_TIMEOUT       (HZ / 10)
+#define SMI_MAX_TIME_OUT        (3 * HZ)
+
+/* timeout for command completion */
+#define SMI_CMD_TIMEOUT         (HZ / 10)
+
+/* registers of smi */
+#define SMI_CR1         0x0     /* SMI control register 1 */
+#define SMI_CR2         0x4     /* SMI control register 2 */
+#define SMI_SR          0x8     /* SMI status register */
+#define SMI_TR          0xC     /* SMI transmit register */
+#define SMI_RR          0x10    /* SMI receive register */
+
+/* defines for control_reg 1 */
+#define BANK_EN         (0xF << 0)      /* enables all banks */
+#define DSEL_TIME       (0x6 << 4)      /* Deselect time 6 + 1 SMI_CK periods */
+#define SW_MODE         (0x1 << 28)     /* enables SW Mode */
+#define WB_MODE         (0x1 << 29)     /* Write Burst Mode */
+#define FAST_MODE       (0x1 << 15)     /* Fast Mode */
+#define HOLD1           (0x1 << 16)     /* Clock Hold period selection */
+
+/* defines for control_reg 2 */
+#define SEND            (0x1 << 7)      /* Send data */
+#define TFIE            (0x1 << 8)      /* Transmission Flag Interrupt Enable */
+#define WCIE            (0x1 << 9)      /* Write Complete Interrupt Enable */
+#define RD_STATUS_REG   (0x1 << 10)     /* reads status reg */
+#define WE              (0x1 << 11)     /* Write Enable */
+
+#define TX_LEN_SHIFT    0
+#define RX_LEN_SHIFT    4
+#define BANK_SHIFT      12
+
+/* defines for status register */
+#define SR_WIP          0x1     /* Write in progress */
+#define SR_WEL          0x2     /* Write enable latch */
+#define SR_BP0          0x4     /* Block protect 0 */
+#define SR_BP1          0x8     /* Block protect 1 */
+#define SR_BP2          0x10    /* Block protect 2 */
+#define SR_SRWD         0x80    /* SR write protect */
+#define TFF             0x100   /* Transfer Finished Flag */
+#define WCF             0x200   /* Transfer Finished Flag */
+#define ERF1            0x400   /* Forbidden Write Request */
+#define ERF2            0x800   /* Forbidden Access */
+
+#define WM_SHIFT        12
+
+/* flash opcodes */
+#define OPCODE_RDID     0x9f    /* Read JEDEC ID */
+
+/* Flash Device Ids maintenance section */
+
+/* data structure to maintain flash ids from different vendors */
+struct flash_device {
+        char *name;
+        u8 erase_cmd;
+        u32 device_id;
+        u32 pagesize;
+        unsigned long sectorsize;
+        unsigned long size_in_bytes;
+};
+
+#define FLASH_ID(n, es, id, psize, ssize, size) \
+{                               \
+        .name = n,              \
+        .erase_cmd = es,        \
+        .device_id = id,        \
+        .pagesize = psize,      \
+        .sectorsize = ssize,    \
+        .size_in_bytes = size   \
+}
+
+static struct flash_device flash_devices[] = {
+        FLASH_ID("st m25p16"     , 0xd8, 0x00152020, 0x100, 0x10000, 0x200000),
+        FLASH_ID("st m25p32"     , 0xd8, 0x00162020, 0x100, 0x10000, 0x400000),
+        FLASH_ID("st m25p64"     , 0xd8, 0x00172020, 0x100, 0x10000, 0x800000),
+        FLASH_ID("st m25p128"    , 0xd8, 0x00182020, 0x100, 0x40000, 0x1000000),
+        FLASH_ID("st m25p05"     , 0xd8, 0x00102020, 0x80 , 0x8000 , 0x10000),
+        FLASH_ID("st m25p10"     , 0xd8, 0x00112020, 0x80 , 0x8000 , 0x20000),
+        FLASH_ID("st m25p20"     , 0xd8, 0x00122020, 0x100, 0x10000, 0x40000),
+        FLASH_ID("st m25p40"     , 0xd8, 0x00132020, 0x100, 0x10000, 0x80000),
+        FLASH_ID("st m25p80"     , 0xd8, 0x00142020, 0x100, 0x10000, 0x100000),
+        FLASH_ID("st m45pe10"    , 0xd8, 0x00114020, 0x100, 0x10000, 0x20000),
+        FLASH_ID("st m45pe20"    , 0xd8, 0x00124020, 0x100, 0x10000, 0x40000),
+        FLASH_ID("st m45pe40"    , 0xd8, 0x00134020, 0x100, 0x10000, 0x80000),
+        FLASH_ID("st m45pe80"    , 0xd8, 0x00144020, 0x100, 0x10000, 0x100000),
+        FLASH_ID("sp s25fl004"   , 0xd8, 0x00120201, 0x100, 0x10000, 0x80000),
+        FLASH_ID("sp s25fl008"   , 0xd8, 0x00130201, 0x100, 0x10000, 0x100000),
+        FLASH_ID("sp s25fl016"   , 0xd8, 0x00140201, 0x100, 0x10000, 0x200000),
+        FLASH_ID("sp s25fl032"   , 0xd8, 0x00150201, 0x100, 0x10000, 0x400000),
+        FLASH_ID("sp s25fl064"   , 0xd8, 0x00160201, 0x100, 0x10000, 0x800000),
+        FLASH_ID("atmel 25f512"  , 0x52, 0x0065001F, 0x80 , 0x8000 , 0x10000),
+        FLASH_ID("atmel 25f1024" , 0x52, 0x0060001F, 0x100, 0x8000 , 0x20000),
+        FLASH_ID("atmel 25f2048" , 0x52, 0x0063001F, 0x100, 0x10000, 0x40000),
+        FLASH_ID("atmel 25f4096" , 0x52, 0x0064001F, 0x100, 0x10000, 0x80000),
+        FLASH_ID("atmel 25fs040" , 0xd7, 0x0004661F, 0x100, 0x10000, 0x80000),
+        FLASH_ID("mac 25l512"    , 0xd8, 0x001020C2, 0x010, 0x10000, 0x10000),
+        FLASH_ID("mac 25l1005"   , 0xd8, 0x001120C2, 0x010, 0x10000, 0x20000),
+        FLASH_ID("mac 25l2005"   , 0xd8, 0x001220C2, 0x010, 0x10000, 0x40000),
+        FLASH_ID("mac 25l4005"   , 0xd8, 0x001320C2, 0x010, 0x10000, 0x80000),
+        FLASH_ID("mac 25l4005a"  , 0xd8, 0x001320C2, 0x010, 0x10000, 0x80000),
+        FLASH_ID("mac 25l8005"   , 0xd8, 0x001420C2, 0x010, 0x10000, 0x100000),
+        FLASH_ID("mac 25l1605"   , 0xd8, 0x001520C2, 0x100, 0x10000, 0x200000),
+        FLASH_ID("mac 25l1605a"  , 0xd8, 0x001520C2, 0x010, 0x10000, 0x200000),
+        FLASH_ID("mac 25l3205"   , 0xd8, 0x001620C2, 0x100, 0x10000, 0x400000),
+        FLASH_ID("mac 25l3205a"  , 0xd8, 0x001620C2, 0x100, 0x10000, 0x400000),
+        FLASH_ID("mac 25l6405"   , 0xd8, 0x001720C2, 0x100, 0x10000, 0x800000),
+};
+
+/* Define spear specific structures */
+
+struct spear_snor_flash;
+
+/**
+ * struct spear_smi - Structure for SMI Device
+ *
+ * @clk: functional clock
+ * @status: current status register of SMI.
+ * @clk_rate: functional clock rate of SMI (default: SMI_MAX_CLOCK_FREQ)
+ * @lock: lock to prevent parallel access of SMI.
+ * @io_base: base address for registers of SMI.
+ * @pdev: platform device
+ * @cmd_complete: queue to wait for command completion of NOR-flash.
+ * @num_flashes: number of flashes actually present on board.
+ * @flash: separate structure for each Serial NOR-flash attached to SMI.
+ */
+struct spear_smi {
+        struct clk *clk;
+        u32 status;
+        unsigned long clk_rate;
+        struct mutex lock;
+        void __iomem *io_base;
+        struct platform_device *pdev;
+        wait_queue_head_t cmd_complete;
+        u32 num_flashes;
+        struct spear_snor_flash *flash[MAX_NUM_FLASH_CHIP];
+};
+
+/**
+ * struct spear_snor_flash - Structure for Serial NOR Flash
+ *
+ * @bank: Bank number(0, 1, 2, 3) for each NOR-flash.
+ * @dev_id: Device ID of NOR-flash.
+ * @lock: lock to manage flash read, write and erase operations
+ * @mtd: MTD info for each NOR-flash.
+ * @num_parts: Total number of partition in each bank of NOR-flash.
+ * @parts: Partition info for each bank of NOR-flash.
+ * @page_size: Page size of NOR-flash.
+ * @base_addr: Base address of NOR-flash.
+ * @erase_cmd: erase command may vary on different flash types
+ * @fast_mode: flash supports read in fast mode
+ */
+struct spear_snor_flash {
+        u32 bank;
+        u32 dev_id;
+        struct mutex lock;
+        struct mtd_info mtd;
+        u32 num_parts;
+        struct mtd_partition *parts;
+        u32 page_size;
+        void __iomem *base_addr;
+        u8 erase_cmd;
+        u8 fast_mode;
+};
+
+static inline struct spear_snor_flash *get_flash_data(struct mtd_info *mtd)
+{
+        return container_of(mtd, struct spear_snor_flash, mtd);
+}
+
+/**
+ * spear_smi_read_sr - Read status register of flash through SMI
+ * @dev: structure of SMI information.
+ * @bank: bank to which flash is connected
+ *
+ * This routine will return the status register of the flash chip present at the
+ * given bank.
+ */
+static int spear_smi_read_sr(struct spear_smi *dev, u32 bank)
+{
+        int ret;
+        u32 ctrlreg1;
+
+        mutex_lock(&dev->lock);
+        dev->status = 0; /* Will be set in interrupt handler */
+
+        ctrlreg1 = readl(dev->io_base + SMI_CR1);
+        /* program smi in hw mode */
+        writel(ctrlreg1 & ~(SW_MODE | WB_MODE), dev->io_base + SMI_CR1);
+
+        /* performing a rsr instruction in hw mode */
+        writel((bank << BANK_SHIFT) | RD_STATUS_REG | TFIE,
+                        dev->io_base + SMI_CR2);
+
+        /* wait for tff */
+        ret = wait_event_interruptible_timeout(dev->cmd_complete,
+                        dev->status & TFF, SMI_CMD_TIMEOUT);
+
+        /* copy dev->status (lower 16 bits) in order to release lock */
+        if (ret > 0)
+                ret = dev->status & 0xffff;
+        else
+                ret = -EIO;
+
+        /* restore the ctrl regs state */
+        writel(ctrlreg1, dev->io_base + SMI_CR1);
+        writel(0, dev->io_base + SMI_CR2);
+        mutex_unlock(&dev->lock);
+
+        return ret;
+}
+
+/**
+ * spear_smi_wait_till_ready - wait till flash is ready
+ * @dev: structure of SMI information.
+ * @bank: flash corresponding to this bank
+ * @timeout: timeout for busy wait condition
+ *
+ * This routine checks for WIP (write in progress) bit in Status register
+ * If successful the routine returns 0 else -EBUSY
+ */
+static int spear_smi_wait_till_ready(struct spear_smi *dev, u32 bank,
+                unsigned long timeout)
+{
+        unsigned long finish;
+        int status;
+
+        finish = jiffies + timeout;
+        do {
+                status = spear_smi_read_sr(dev, bank);
+                if (status < 0)
+                        continue; /* try till timeout */
+                else if (!(status & SR_WIP))
+                        return 0;
+
+                cond_resched();
+        } while (!time_after_eq(jiffies, finish));
+
+        dev_err(&dev->pdev->dev, "smi controller is busy, timeout\n");
+        return status;
+}
+
+/**
+ * spear_smi_int_handler - SMI Interrupt Handler.
+ * @irq: irq number
+ * @dev_id: structure of SMI device, embedded in dev_id.
+ *
+ * The handler clears all interrupt conditions and records the status in
+ * dev->status which is used by the driver later.
+ */
+static irqreturn_t spear_smi_int_handler(int irq, void *dev_id)
+{
+        u32 status = 0;
+        struct spear_smi *dev = dev_id;
+
+        status = readl(dev->io_base + SMI_SR);
+
+        if (unlikely(!status))
+                return IRQ_NONE;
+
+        /* clear all interrupt conditions */
+        writel(0, dev->io_base + SMI_SR);
+
+        /* copy the status register in dev->status */
+        dev->status |= status;
+
+        /* send the completion */
+        wake_up_interruptible(&dev->cmd_complete);
+
+        return IRQ_HANDLED;
+}
+
+/**
+ * spear_smi_hw_init - initializes the smi controller.
+ * @dev: structure of smi device
+ *
+ * this routine initializes the smi controller wit the default values
+ */
+static void spear_smi_hw_init(struct spear_smi *dev)
+{
+        unsigned long rate = 0;
+        u32 prescale = 0;
+        u32 val;
+
+        rate = clk_get_rate(dev->clk);
+
+        /* functional clock of smi */
+        prescale = DIV_ROUND_UP(rate, dev->clk_rate);
+
+        /*
+         * setting the standard values, fast mode, prescaler for
+         * SMI_MAX_CLOCK_FREQ (50MHz) operation and bank enable
+         */
+        val = HOLD1 | BANK_EN | DSEL_TIME | (prescale << 8);
+
+        mutex_lock(&dev->lock);
+        writel(val, dev->io_base + SMI_CR1);
+        mutex_unlock(&dev->lock);
+}
+
+/**
+ * get_flash_index - match chip id from a flash list.
+ * @flash_id: a valid nor flash chip id obtained from board.
+ *
+ * try to validate the chip id by matching from a list, if not found then simply
+ * returns negative. In case of success returns index in to the flash devices
+ * array.
+ */
+static int get_flash_index(u32 flash_id)
+{
+        int index;
+
+        /* Matches chip-id to entire list of 'serial-nor flash' ids */
+        for (index = 0; index < ARRAY_SIZE(flash_devices); index++) {
+                if (flash_devices[index].device_id == flash_id)
+                        return index;
+        }
+
+        /* Memory chip is not listed and not supported */
+        return -ENODEV;
+}
+
+/**
+ * spear_smi_write_enable - Enable the flash to do write operation
+ * @dev: structure of SMI device
+ * @bank: enable write for flash connected to this bank
+ *
+ * Set write enable latch with Write Enable command.
+ * Returns 0 on success.
+ */
+static int spear_smi_write_enable(struct spear_smi *dev, u32 bank)
+{
+        int ret;
+        u32 ctrlreg1;
+
+        mutex_lock(&dev->lock);
+        dev->status = 0; /* Will be set in interrupt handler */
+
+        ctrlreg1 = readl(dev->io_base + SMI_CR1);
+        /* program smi in h/w mode */
+        writel(ctrlreg1 & ~SW_MODE, dev->io_base + SMI_CR1);
+
+        /* give the flash, write enable command */
+        writel((bank << BANK_SHIFT) | WE | TFIE, dev->io_base + SMI_CR2);
+
+        ret = wait_event_interruptible_timeout(dev->cmd_complete,
+                        dev->status & TFF, SMI_CMD_TIMEOUT);
+
+        /* restore the ctrl regs state */
+        writel(ctrlreg1, dev->io_base + SMI_CR1);
+        writel(0, dev->io_base + SMI_CR2);
+
+        if (ret <= 0) {
+                ret = -EIO;
+                dev_err(&dev->pdev->dev,
+                        "smi controller failed on write enable\n");
+        } else {
+                /* check whether write mode status is set for required bank */
+                if (dev->status & (1 << (bank + WM_SHIFT)))
+                        ret = 0;
+                else {
+                        dev_err(&dev->pdev->dev, "couldn't enable write\n");
+                        ret = -EIO;
+                }
+        }
+
+        mutex_unlock(&dev->lock);
+        return ret;
+}
+
+static inline u32
+get_sector_erase_cmd(struct spear_snor_flash *flash, u32 offset)
+{
+        u32 cmd;
+        u8 *x = (u8 *)&cmd;
+
+        x[0] = flash->erase_cmd;
+        x[1] = offset >> 16;
+        x[2] = offset >> 8;
+        x[3] = offset;
+
+        return cmd;
+}
+
+/**
+ * spear_smi_erase_sector - erase one sector of flash
+ * @dev: structure of SMI information
+ * @command: erase command to be send
+ * @bank: bank to which this command needs to be send
+ * @bytes: size of command
+ *
+ * Erase one sector of flash memory at offset ``offset'' which is any
+ * address within the sector which should be erased.
+ * Returns 0 if successful, non-zero otherwise.
+ */
+static int spear_smi_erase_sector(struct spear_smi *dev,
+                u32 bank, u32 command, u32 bytes)
+{
+        u32 ctrlreg1 = 0;
+        int ret;
+
+        ret = spear_smi_wait_till_ready(dev, bank, SMI_MAX_TIME_OUT);
+        if (ret)
+                return ret;
+
+        ret = spear_smi_write_enable(dev, bank);
+        if (ret)
+                return ret;
+
+        mutex_lock(&dev->lock);
+
+        ctrlreg1 = readl(dev->io_base + SMI_CR1);
+        writel((ctrlreg1 | SW_MODE) & ~WB_MODE, dev->io_base + SMI_CR1);
+
+        /* send command in sw mode */
+        writel(command, dev->io_base + SMI_TR);
+
+        writel((bank << BANK_SHIFT) | SEND | TFIE | (bytes << TX_LEN_SHIFT),
+                        dev->io_base + SMI_CR2);
+
+        ret = wait_event_interruptible_timeout(dev->cmd_complete,
+                        dev->status & TFF, SMI_CMD_TIMEOUT);
+
+        if (ret <= 0) {
+                ret = -EIO;
+                dev_err(&dev->pdev->dev, "sector erase failed\n");
+        } else
+                ret = 0; /* success */
+
+        /* restore ctrl regs */
+        writel(ctrlreg1, dev->io_base + SMI_CR1);
+        writel(0, dev->io_base + SMI_CR2);
+
+        mutex_unlock(&dev->lock);
+        return ret;
+}
+
+/**
+ * spear_mtd_erase - perform flash erase operation as requested by user
+ * @mtd: Provides the memory characteristics
+ * @e_info: Provides the erase information
+ *
+ * Erase an address range on the flash chip. The address range may extend
+ * one or more erase sectors. Return an error is there is a problem erasing.
+ */
+static int spear_mtd_erase(struct mtd_info *mtd, struct erase_info *e_info)
+{
+        struct spear_snor_flash *flash = get_flash_data(mtd);
+        struct spear_smi *dev = mtd->priv;
+        u32 addr, command, bank;
+        int len, ret;
+
+        if (!flash || !dev)
+                return -ENODEV;
+
+        bank = flash->bank;
+        if (bank > dev->num_flashes - 1) {
+                dev_err(&dev->pdev->dev, "Invalid Bank Num");
+                return -EINVAL;
+        }
+
+        addr = e_info->addr;
+        len = e_info->len;
+
+        mutex_lock(&flash->lock);
+
+        /* now erase sectors in loop */
+        while (len) {
+                command = get_sector_erase_cmd(flash, addr);
+                /* preparing the command for flash */
+                ret = spear_smi_erase_sector(dev, bank, command, 4);
+                if (ret) {
+                        e_info->state = MTD_ERASE_FAILED;
+                        mutex_unlock(&flash->lock);
+                        return ret;
+                }
+                addr += mtd->erasesize;
+                len -= mtd->erasesize;
+        }
+
+        mutex_unlock(&flash->lock);
+        e_info->state = MTD_ERASE_DONE;
+        mtd_erase_callback(e_info);
+
+        return 0;
+}
+
+/**
+ * spear_mtd_read - performs flash read operation as requested by the user
+ * @mtd: MTD information of the memory bank
+ * @from: Address from which to start read
+ * @len: Number of bytes to be read
+ * @retlen: Fills the Number of bytes actually read
+ * @buf: Fills this after reading
+ *
+ * Read an address range from the flash chip. The address range
+ * may be any size provided it is within the physical boundaries.
+ * Returns 0 on success, non zero otherwise
+ */
+static int spear_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
+                size_t *retlen, u8 *buf)
+{
+        struct spear_snor_flash *flash = get_flash_data(mtd);
+        struct spear_smi *dev = mtd->priv;
+        void *src;
+        u32 ctrlreg1, val;
+        int ret;
+
+        if (!flash || !dev)
+                return -ENODEV;
+
+        if (flash->bank > dev->num_flashes - 1) {
+                dev_err(&dev->pdev->dev, "Invalid Bank Num");
+                return -EINVAL;
+        }
+
+        /* select address as per bank number */
+        src = flash->base_addr + from;
+
+        mutex_lock(&flash->lock);
+
+        /* wait till previous write/erase is done. */
+        ret = spear_smi_wait_till_ready(dev, flash->bank, SMI_MAX_TIME_OUT);
+        if (ret) {
+                mutex_unlock(&flash->lock);
+                return ret;
+        }
+
+        mutex_lock(&dev->lock);
+        /* put smi in hw mode not wbt mode */
+        ctrlreg1 = val = readl(dev->io_base + SMI_CR1);
+        val &= ~(SW_MODE | WB_MODE);
+        if (flash->fast_mode)
+                val |= FAST_MODE;
+
+        writel(val, dev->io_base + SMI_CR1);
+
+        memcpy_fromio(buf, (u8 *)src, len);
+
+        /* restore ctrl reg1 */
+        writel(ctrlreg1, dev->io_base + SMI_CR1);
+        mutex_unlock(&dev->lock);
+
+        *retlen = len;
+        mutex_unlock(&flash->lock);
+
+        return 0;
+}
+
+static inline int spear_smi_cpy_toio(struct spear_smi *dev, u32 bank,
+                void *dest, const void *src, size_t len)
+{
+        int ret;
+        u32 ctrlreg1;
+
+        /* wait until finished previous write command. */
+        ret = spear_smi_wait_till_ready(dev, bank, SMI_MAX_TIME_OUT);
+        if (ret)
+                return ret;
+
+        /* put smi in write enable */
+        ret = spear_smi_write_enable(dev, bank);
+        if (ret)
+                return ret;
+
+        /* put smi in hw, write burst mode */
+        mutex_lock(&dev->lock);
+
+        ctrlreg1 = readl(dev->io_base + SMI_CR1);
+        writel((ctrlreg1 | WB_MODE) & ~SW_MODE, dev->io_base + SMI_CR1);
+
+        memcpy_toio(dest, src, len);
+
+        writel(ctrlreg1, dev->io_base + SMI_CR1);
+
+        mutex_unlock(&dev->lock);
+        return 0;
+}
+
+/**
+ * spear_mtd_write - performs write operation as requested by the user.
+ * @mtd: MTD information of the memory bank.
+ * @to: Address to write.
+ * @len: Number of bytes to be written.
+ * @retlen: Number of bytes actually wrote.
+ * @buf: Buffer from which the data to be taken.
+ *
+ * Write an address range to the flash chip. Data must be written in
+ * flash_page_size chunks. The address range may be any size provided
+ * it is within the physical boundaries.
+ * Returns 0 on success, non zero otherwise
+ */
+static int spear_mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
+                size_t *retlen, const u8 *buf)
+{
+        struct spear_snor_flash *flash = get_flash_data(mtd);
+        struct spear_smi *dev = mtd->priv;
+        void *dest;
+        u32 page_offset, page_size;
+        int ret;
+
+        if (!flash || !dev)
+                return -ENODEV;
+
+        if (flash->bank > dev->num_flashes - 1) {
+                dev_err(&dev->pdev->dev, "Invalid Bank Num");
+                return -EINVAL;
+        }
+
+        /* select address as per bank number */
+        dest = flash->base_addr + to;
+        mutex_lock(&flash->lock);
+
+        page_offset = (u32)to % flash->page_size;
+
+        /* do if all the bytes fit onto one page */
+        if (page_offset + len <= flash->page_size) {
+                ret = spear_smi_cpy_toio(dev, flash->bank, dest, buf, len);
+                if (!ret)
+                        *retlen += len;
+        } else {
+                u32 i;
+
+                /* the size of data remaining on the first page */
+                page_size = flash->page_size - page_offset;
+
+                ret = spear_smi_cpy_toio(dev, flash->bank, dest, buf,
+                                page_size);
+                if (ret)
+                        goto err_write;
+                else
+                        *retlen += page_size;
+
+                /* write everything in pagesize chunks */
+                for (i = page_size; i < len; i += page_size) {
+                        page_size = len - i;
+                        if (page_size > flash->page_size)
+                                page_size = flash->page_size;
+
+                        ret = spear_smi_cpy_toio(dev, flash->bank, dest + i,
+                                        buf + i, page_size);
+                        if (ret)
+                                break;
+                        else
+                                *retlen += page_size;
+                }
+        }
+
+err_write:
+        mutex_unlock(&flash->lock);
+
+        return ret;
+}
+
+/**
+ * spear_smi_probe_flash - Detects the NOR Flash chip.
+ * @dev: structure of SMI information.
+ * @bank: bank on which flash must be probed
+ *
+ * This routine will check whether there exists a flash chip on a given memory
+ * bank ID.
+ * Return index of the probed flash in flash devices structure
+ */
+static int spear_smi_probe_flash(struct spear_smi *dev, u32 bank)
+{
+        int ret;
+        u32 val = 0;
+
+        ret = spear_smi_wait_till_ready(dev, bank, SMI_PROBE_TIMEOUT);
+        if (ret)
+                return ret;
+
+        mutex_lock(&dev->lock);
+
+        dev->status = 0; /* Will be set in interrupt handler */
+        /* put smi in sw mode */
+        val = readl(dev->io_base + SMI_CR1);
+        writel(val | SW_MODE, dev->io_base + SMI_CR1);
+
+        /* send readid command in sw mode */
+        writel(OPCODE_RDID, dev->io_base + SMI_TR);
+
+        val = (bank << BANK_SHIFT) | SEND | (1 << TX_LEN_SHIFT) |
+                (3 << RX_LEN_SHIFT) | TFIE;
+        writel(val, dev->io_base + SMI_CR2);
+
+        /* wait for TFF */
+        ret = wait_event_interruptible_timeout(dev->cmd_complete,
+                        dev->status & TFF, SMI_CMD_TIMEOUT);
+        if (ret <= 0) {
+                ret = -ENODEV;
+                goto err_probe;
+        }
+
+        /* get memory chip id */
+        val = readl(dev->io_base + SMI_RR);
+        val &= 0x00ffffff;
+        ret = get_flash_index(val);
+
+err_probe:
+        /* clear sw mode */
+        val = readl(dev->io_base + SMI_CR1);
+        writel(val & ~SW_MODE, dev->io_base + SMI_CR1);
+
+        mutex_unlock(&dev->lock);
+        return ret;
+}
+
+
+#ifdef CONFIG_OF
+static int __devinit spear_smi_probe_config_dt(struct platform_device *pdev,
+                                               struct device_node *np)
+{
+        struct spear_smi_plat_data *pdata = dev_get_platdata(&pdev->dev);
+        struct device_node *pp = NULL;
+        const __be32 *addr;
+        u32 val;
+        int len;
+        int i = 0;
+
+        if (!np)
+                return -ENODEV;
+
+        of_property_read_u32(np, "clock-rate", &val);
+        pdata->clk_rate = val;
+
+        pdata->board_flash_info = devm_kzalloc(&pdev->dev,
+                                               sizeof(*pdata->board_flash_info),
+                                               GFP_KERNEL);
+
+        /* Fill structs for each subnode (flash device) */
+        while ((pp = of_get_next_child(np, pp))) {
+                struct spear_smi_flash_info *flash_info;
+
+                flash_info = &pdata->board_flash_info[i];
+                pdata->np[i] = pp;
+
+                /* Read base-addr and size from DT */
+                addr = of_get_property(pp, "reg", &len);
+                pdata->board_flash_info->mem_base = be32_to_cpup(&addr[0]);
+                pdata->board_flash_info->size = be32_to_cpup(&addr[1]);
+
+                if (of_get_property(pp, "st,smi-fast-mode", NULL))
+                        pdata->board_flash_info->fast_mode = 1;
+
+                i++;
+        }
+
+        pdata->num_flashes = i;
+
+        return 0;
+}
+#else
+static int __devinit spear_smi_probe_config_dt(struct platform_device *pdev,
+                                               struct device_node *np)
+{
+        return -ENOSYS;
+}
+#endif
+
+static int spear_smi_setup_banks(struct platform_device *pdev,
+                                 u32 bank, struct device_node *np)
+{
+        struct spear_smi *dev = platform_get_drvdata(pdev);
+        struct mtd_part_parser_data ppdata = {};
+        struct spear_smi_flash_info *flash_info;
+        struct spear_smi_plat_data *pdata;
+        struct spear_snor_flash *flash;
+        struct mtd_partition *parts = NULL;
+        int count = 0;
+        int flash_index;
+        int ret = 0;
+
+        pdata = dev_get_platdata(&pdev->dev);
+        if (bank > pdata->num_flashes - 1)
+                return -EINVAL;
+
+        flash_info = &pdata->board_flash_info[bank];
+        if (!flash_info)
+                return -ENODEV;
+
+        flash = kzalloc(sizeof(*flash), GFP_ATOMIC);
+        if (!flash)
+                return -ENOMEM;
+        flash->bank = bank;
+        flash->fast_mode = flash_info->fast_mode ? 1 : 0;
+        mutex_init(&flash->lock);
+
+        /* verify whether nor flash is really present on board */
+        flash_index = spear_smi_probe_flash(dev, bank);
+        if (flash_index < 0) {
+                dev_info(&dev->pdev->dev, "smi-nor%d not found\n", bank);
+                ret = flash_index;
+                goto err_probe;
+        }
+        /* map the memory for nor flash chip */
+        flash->base_addr = ioremap(flash_info->mem_base, flash_info->size);
+        if (!flash->base_addr) {
+                ret = -EIO;
+                goto err_probe;
+        }
+
+        dev->flash[bank] = flash;
+        flash->mtd.priv = dev;
+
+        if (flash_info->name)
+                flash->mtd.name = flash_info->name;
+        else
+                flash->mtd.name = flash_devices[flash_index].name;
+
+        flash->mtd.type = MTD_NORFLASH;
+        flash->mtd.writesize = 1;
+        flash->mtd.flags = MTD_CAP_NORFLASH;
+        flash->mtd.size = flash_info->size;
+        flash->mtd.erasesize = flash_devices[flash_index].sectorsize;
+        flash->page_size = flash_devices[flash_index].pagesize;
+        flash->mtd.writebufsize = flash->page_size;
+        flash->erase_cmd = flash_devices[flash_index].erase_cmd;
+        flash->mtd._erase = spear_mtd_erase;
+        flash->mtd._read = spear_mtd_read;
+        flash->mtd._write = spear_mtd_write;
+        flash->dev_id = flash_devices[flash_index].device_id;
+
+        dev_info(&dev->pdev->dev, "mtd .name=%s .size=%llx(%lluM)\n",
+                        flash->mtd.name, flash->mtd.size,
+                        flash->mtd.size / (1024 * 1024));
+
+        dev_info(&dev->pdev->dev, ".erasesize = 0x%x(%uK)\n",
+                        flash->mtd.erasesize, flash->mtd.erasesize / 1024);
+
+#ifndef CONFIG_OF
+        if (flash_info->partitions) {
+                parts = flash_info->partitions;
+                count = flash_info->nr_partitions;
+        }
+#endif
+        ppdata.of_node = np;
+
+        ret = mtd_device_parse_register(&flash->mtd, NULL, &ppdata, parts,
+                                        count);
+        if (ret) {
+                dev_err(&dev->pdev->dev, "Err MTD partition=%d\n", ret);
+                goto err_map;
+        }
+
+        return 0;
+
+err_map:
+        iounmap(flash->base_addr);
+
+err_probe:
+        kfree(flash);
+        return ret;
+}
+
+/**
+ * spear_smi_probe - Entry routine
+ * @pdev: platform device structure
+ *
+ * This is the first routine which gets invoked during booting and does all
+ * initialization/allocation work. The routine looks for available memory banks,
+ * and do proper init for any found one.
+ * Returns 0 on success, non zero otherwise
+ */
+static int __devinit spear_smi_probe(struct platform_device *pdev)
+{
+        struct device_node *np = pdev->dev.of_node;
+        struct spear_smi_plat_data *pdata = NULL;
+        struct spear_smi *dev;
+        struct resource *smi_base;
+        int irq, ret = 0;
+        int i;
+
+        if (np) {
+                pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+                if (!pdata) {
+                        pr_err("%s: ERROR: no memory", __func__);
+                        ret = -ENOMEM;
+                        goto err;
+                }
+                pdev->dev.platform_data = pdata;
+                ret = spear_smi_probe_config_dt(pdev, np);
+                if (ret) {
+                        ret = -ENODEV;
+                        dev_err(&pdev->dev, "no platform data\n");
+                        goto err;
+                }
+        } else {
+                pdata = dev_get_platdata(&pdev->dev);
+                if (pdata < 0) {
+                        ret = -ENODEV;
+                        dev_err(&pdev->dev, "no platform data\n");
+                        goto err;
+                }
+        }
+
+        smi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!smi_base) {
+                ret = -ENODEV;
+                dev_err(&pdev->dev, "invalid smi base address\n");
+                goto err;
+        }
+
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                ret = -ENODEV;
+                dev_err(&pdev->dev, "invalid smi irq\n");
+                goto err;
+        }
+
+        dev = kzalloc(sizeof(*dev), GFP_ATOMIC);
+        if (!dev) {
+                ret = -ENOMEM;
+                dev_err(&pdev->dev, "mem alloc fail\n");
+                goto err;
+        }
+
+        smi_base = request_mem_region(smi_base->start, resource_size(smi_base),
+                        pdev->name);
+        if (!smi_base) {
+                ret = -EBUSY;
+                dev_err(&pdev->dev, "request mem region fail\n");
+                goto err_mem;
+        }
+
+        dev->io_base = ioremap(smi_base->start, resource_size(smi_base));
+        if (!dev->io_base) {
+                ret = -EIO;
+                dev_err(&pdev->dev, "ioremap fail\n");
+                goto err_ioremap;
+        }
+
+        dev->pdev = pdev;
+        dev->clk_rate = pdata->clk_rate;
+
+        if (dev->clk_rate < 0 || dev->clk_rate > SMI_MAX_CLOCK_FREQ)
+                dev->clk_rate = SMI_MAX_CLOCK_FREQ;
+
+        dev->num_flashes = pdata->num_flashes;
+
+        if (dev->num_flashes > MAX_NUM_FLASH_CHIP) {
+                dev_err(&pdev->dev, "exceeding max number of flashes\n");
+                dev->num_flashes = MAX_NUM_FLASH_CHIP;
+        }
+
+        dev->clk = clk_get(&pdev->dev, NULL);
+        if (IS_ERR(dev->clk)) {
+                ret = PTR_ERR(dev->clk);
+                goto err_clk;
+        }
+
+        ret = clk_enable(dev->clk);
+        if (ret)
+                goto err_clk_enable;
+
+        ret = request_irq(irq, spear_smi_int_handler, 0, pdev->name, dev);
+        if (ret) {
+                dev_err(&dev->pdev->dev, "SMI IRQ allocation failed\n");
+                goto err_irq;
+        }
+
+        mutex_init(&dev->lock);
+        init_waitqueue_head(&dev->cmd_complete);
+        spear_smi_hw_init(dev);
+        platform_set_drvdata(pdev, dev);
+
+        /* loop for each serial nor-flash which is connected to smi */
+        for (i = 0; i < dev->num_flashes; i++) {
+                ret = spear_smi_setup_banks(pdev, i, pdata->np[i]);
+                if (ret) {
+                        dev_err(&dev->pdev->dev, "bank setup failed\n");
+                        goto err_bank_setup;
+                }
+        }
+
+        return 0;
+
+err_bank_setup:
+        free_irq(irq, dev);
+        platform_set_drvdata(pdev, NULL);
+err_irq:
+        clk_disable(dev->clk);
+err_clk_enable:
+        clk_put(dev->clk);
+err_clk:
+        iounmap(dev->io_base);
+err_ioremap:
+        release_mem_region(smi_base->start, resource_size(smi_base));
+err_mem:
+        kfree(dev);
+err:
+        return ret;
+}
+
+/**
+ * spear_smi_remove - Exit routine
+ * @pdev: platform device structure
+ *
+ * free all allocations and delete the partitions.
+ */
+static int __devexit spear_smi_remove(struct platform_device *pdev)
+{
+        struct spear_smi *dev;
+        struct spear_smi_plat_data *pdata;
+        struct spear_snor_flash *flash;
+        struct resource *smi_base;
+        int ret;
+        int i, irq;
+
+        dev = platform_get_drvdata(pdev);
+        if (!dev) {
+                dev_err(&pdev->dev, "dev is null\n");
+                return -ENODEV;
+        }
+
+        pdata = dev_get_platdata(&pdev->dev);
+
+        /* clean up for all nor flash */
+        for (i = 0; i < dev->num_flashes; i++) {
+                flash = dev->flash[i];
+                if (!flash)
+                        continue;
+
+                /* clean up mtd stuff */
+                ret = mtd_device_unregister(&flash->mtd);
+                if (ret)
+                        dev_err(&pdev->dev, "error removing mtd\n");
+
+                iounmap(flash->base_addr);
+                kfree(flash);
+        }
+
+        irq = platform_get_irq(pdev, 0);
+        free_irq(irq, dev);
+
+        clk_disable(dev->clk);
+        clk_put(dev->clk);
+        iounmap(dev->io_base);
+        kfree(dev);
+
+        smi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        release_mem_region(smi_base->start, resource_size(smi_base));
+        platform_set_drvdata(pdev, NULL);
+
+        return 0;
+}
+
+int spear_smi_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        struct spear_smi *dev = platform_get_drvdata(pdev);
+
+        if (dev && dev->clk)
+                clk_disable(dev->clk);
+
+        return 0;
+}
+
+int spear_smi_resume(struct platform_device *pdev)
+{
+        struct spear_smi *dev = platform_get_drvdata(pdev);
+        int ret = -EPERM;
+
+        if (dev && dev->clk)
+                ret = clk_enable(dev->clk);
+
+        if (!ret)
+                spear_smi_hw_init(dev);
+        return ret;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id spear_smi_id_table[] = {
+        { .compatible = "st,spear600-smi" },
+        {}
+};
+MODULE_DEVICE_TABLE(of, spear_smi_id_table);
+#endif
+
+static struct platform_driver spear_smi_driver = {
+        .driver = {
+                .name = "smi",
+                .bus = &platform_bus_type,
+                .owner = THIS_MODULE,
+                .of_match_table = of_match_ptr(spear_smi_id_table),
+        },
+        .probe = spear_smi_probe,
+        .remove = __devexit_p(spear_smi_remove),
+        .suspend = spear_smi_suspend,
+        .resume = spear_smi_resume,
+};
+
+static int spear_smi_init(void)
+{
+        return platform_driver_register(&spear_smi_driver);
+}
+module_init(spear_smi_init);
+
+static void spear_smi_exit(void)
+{
+        platform_driver_unregister(&spear_smi_driver);
+}
+module_exit(spear_smi_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Ashish Priyadarshi, Shiraz Hashim <shiraz.hashim@st.com>");
+MODULE_DESCRIPTION("MTD SMI driver for serial nor flash chips");
diff --git a/drivers/mtd/devices/sst25l.c b/drivers/mtd/devices/sst25l.c
index 5fc198350b94..ab8a2f4c8d60 100644
--- a/drivers/mtd/devices/sst25l.c
+++ b/drivers/mtd/devices/sst25l.c
@@ -175,9 +175,6 @@ static int sst25l_erase(struct mtd_info *mtd, struct erase_info *instr)
         int err;
 
         /* Sanity checks */
-        if (instr->addr + instr->len > flash->mtd.size)
-                return -EINVAL;
-
         if ((uint32_t)instr->len % mtd->erasesize)
                 return -EINVAL;
 
@@ -223,16 +220,6 @@ static int sst25l_read(struct mtd_info *mtd, loff_t from, size_t len,
         unsigned char command[4];
         int ret;
 
-        /* Sanity checking */
-        if (len == 0)
-                return 0;
-
-        if (from + len > flash->mtd.size)
-                return -EINVAL;
-
-        if (retlen)
-                *retlen = 0;
-
         spi_message_init(&message);
         memset(&transfer, 0, sizeof(transfer));
 
@@ -274,13 +261,6 @@ static int sst25l_write(struct mtd_info *mtd, loff_t to, size_t len,
         int i, j, ret, bytes, copied = 0;
         unsigned char command[5];
 
-        /* Sanity checks */
-        if (!len)
-                return 0;
-
-        if (to + len > flash->mtd.size)
-                return -EINVAL;
-
         if ((uint32_t)to % mtd->writesize)
                 return -EINVAL;
 
@@ -402,10 +382,11 @@ static int __devinit sst25l_probe(struct spi_device *spi)
         flash->mtd.flags        = MTD_CAP_NORFLASH;
         flash->mtd.erasesize    = flash_info->erase_size;
         flash->mtd.writesize    = flash_info->page_size;
+        flash->mtd.writebufsize = flash_info->page_size;
         flash->mtd.size         = flash_info->page_size * flash_info->nr_pages;
-        flash->mtd.erase        = sst25l_erase;
-        flash->mtd.read         = sst25l_read;
-        flash->mtd.write        = sst25l_write;
+        flash->mtd._erase       = sst25l_erase;
+        flash->mtd._read                = sst25l_read;
+        flash->mtd._write       = sst25l_write;
 
         dev_info(&spi->dev, "%s (%lld KiB)\n", flash_info->name,
                  (long long)flash->mtd.size >> 10);
@@ -418,9 +399,9 @@ static int __devinit sst25l_probe(struct spi_device *spi)
               flash->mtd.numeraseregions);
 
 
-        ret = mtd_device_parse_register(&flash->mtd, NULL, 0,
-                        data ? data->parts : NULL,
-                        data ? data->nr_parts : 0);
+        ret = mtd_device_parse_register(&flash->mtd, NULL, NULL,
+                                        data ? data->parts : NULL,
+                                        data ? data->nr_parts : 0);
         if (ret) {
                 kfree(flash);
                 dev_set_drvdata(&spi->dev, NULL);
@@ -450,18 +431,7 @@ static struct spi_driver sst25l_driver = {
         .remove         = __devexit_p(sst25l_remove),
 };
 
-static int __init sst25l_init(void)
-{
-        return spi_register_driver(&sst25l_driver);
-}
-
-static void __exit sst25l_exit(void)
-{
-        spi_unregister_driver(&sst25l_driver);
-}
-
-module_init(sst25l_init);
-module_exit(sst25l_exit);
+module_spi_driver(sst25l_driver);
 
 MODULE_DESCRIPTION("MTD SPI driver for SST25L Flash chips");
 MODULE_AUTHOR("Andre Renaud <andre@bluewatersys.com>, "
diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c
index 28646c95cfb8..3af351484098 100644
--- a/drivers/mtd/inftlcore.c
+++ b/drivers/mtd/inftlcore.c
@@ -56,7 +56,7 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         if (memcmp(mtd->name, "DiskOnChip", 10))
                 return;
 
-        if (!mtd->block_isbad) {
+        if (!mtd->_block_isbad) {
                 printk(KERN_ERR
 "INFTL no longer supports the old DiskOnChip drivers loaded via docprobe.\n"
 "Please use the new diskonchip driver under the NAND subsystem.\n");
diff --git a/drivers/mtd/lpddr/lpddr_cmds.c b/drivers/mtd/lpddr/lpddr_cmds.c
index 536bbceaeaad..d3cfe26beeaa 100644
--- a/drivers/mtd/lpddr/lpddr_cmds.c
+++ b/drivers/mtd/lpddr/lpddr_cmds.c
@@ -40,7 +40,7 @@ static int lpddr_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 static int lpddr_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
                         size_t *retlen, void **mtdbuf, resource_size_t *phys);
-static void lpddr_unpoint(struct mtd_info *mtd, loff_t adr, size_t len);
+static int lpddr_unpoint(struct mtd_info *mtd, loff_t adr, size_t len);
 static int get_chip(struct map_info *map, struct flchip *chip, int mode);
 static int chip_ready(struct map_info *map, struct flchip *chip, int mode);
 static void put_chip(struct map_info *map, struct flchip *chip);
@@ -63,18 +63,18 @@ struct mtd_info *lpddr_cmdset(struct map_info *map)
         mtd->type = MTD_NORFLASH;
 
         /* Fill in the default mtd operations */
-        mtd->read = lpddr_read;
+        mtd->_read = lpddr_read;
         mtd->type = MTD_NORFLASH;
         mtd->flags = MTD_CAP_NORFLASH;
         mtd->flags &= ~MTD_BIT_WRITEABLE;
-        mtd->erase = lpddr_erase;
-        mtd->write = lpddr_write_buffers;
-        mtd->writev = lpddr_writev;
-        mtd->lock = lpddr_lock;
-        mtd->unlock = lpddr_unlock;
+        mtd->_erase = lpddr_erase;
+        mtd->_write = lpddr_write_buffers;
+        mtd->_writev = lpddr_writev;
+        mtd->_lock = lpddr_lock;
+        mtd->_unlock = lpddr_unlock;
         if (map_is_linear(map)) {
-                mtd->point = lpddr_point;
-                mtd->unpoint = lpddr_unpoint;
+                mtd->_point = lpddr_point;
+                mtd->_unpoint = lpddr_unpoint;
         }
         mtd->size = 1 << lpddr->qinfo->DevSizeShift;
         mtd->erasesize = 1 << lpddr->qinfo->UniformBlockSizeShift;
@@ -530,14 +530,12 @@ static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
         struct flchip *chip = &lpddr->chips[chipnum];
         int ret = 0;
 
-        if (!map->virt || (adr + len > mtd->size))
+        if (!map->virt)
                 return -EINVAL;
 
         /* ofs: offset within the first chip that the first read should start */
         ofs = adr - (chipnum << lpddr->chipshift);
-
         *mtdbuf = (void *)map->virt + chip->start + ofs;
-        *retlen = 0;
 
         while (len) {
                 unsigned long thislen;
@@ -575,11 +573,11 @@ static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
         return 0;
 }
 
-static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
+static int lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
 {
         struct map_info *map = mtd->priv;
         struct lpddr_private *lpddr = map->fldrv_priv;
-        int chipnum = adr >> lpddr->chipshift;
+        int chipnum = adr >> lpddr->chipshift, err = 0;
         unsigned long ofs;
 
         /* ofs: offset within the first chip that the first read should start */
@@ -603,9 +601,11 @@ static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
                         chip->ref_point_counter--;
                         if (chip->ref_point_counter == 0)
                                 chip->state = FL_READY;
-                } else
+                } else {
                         printk(KERN_WARNING "%s: Warning: unpoint called on non"
                                         "pointed region\n", map->name);
+                        err = -EINVAL;
+                }
 
                 put_chip(map, chip);
                 mutex_unlock(&chip->mutex);
@@ -614,6 +614,8 @@ static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
                 ofs = 0;
                 chipnum++;
         }
+
+        return err;
 }
 
 static int lpddr_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
@@ -637,13 +639,11 @@ static int lpddr_writev(struct mtd_info *mtd, const struct kvec *vecs,
         int chipnum;
         unsigned long ofs, vec_seek, i;
         int wbufsize = 1 << lpddr->qinfo->BufSizeShift;
-
         size_t len = 0;
 
         for (i = 0; i < count; i++)
                 len += vecs[i].iov_len;
 
-        *retlen = 0;
         if (!len)
                 return 0;
 
@@ -688,9 +688,6 @@ static int lpddr_erase(struct mtd_info *mtd, struct erase_info *instr)
         ofs = instr->addr;
         len = instr->len;
 
-        if (ofs > mtd->size || (len + ofs) > mtd->size)
-                return -EINVAL;
-
         while (len > 0) {
                 ret = do_erase_oneblock(mtd, ofs);
                 if (ret)
diff --git a/drivers/mtd/maps/bfin-async-flash.c b/drivers/mtd/maps/bfin-async-flash.c
index 650126c361f1..ef5cde84a8b3 100644
--- a/drivers/mtd/maps/bfin-async-flash.c
+++ b/drivers/mtd/maps/bfin-async-flash.c
@@ -164,8 +164,8 @@ static int __devinit bfin_flash_probe(struct platform_device *pdev)
                 return -ENXIO;
         }
 
-        mtd_device_parse_register(state->mtd, part_probe_types, 0,
-                        pdata->parts, pdata->nr_parts);
+        mtd_device_parse_register(state->mtd, part_probe_types, NULL,
+                                  pdata->parts, pdata->nr_parts);
 
         platform_set_drvdata(pdev, state);
 
diff --git a/drivers/mtd/maps/dc21285.c b/drivers/mtd/maps/dc21285.c
index f43b365b848c..080f06053bd4 100644
--- a/drivers/mtd/maps/dc21285.c
+++ b/drivers/mtd/maps/dc21285.c
@@ -196,7 +196,7 @@ static int __init init_dc21285(void)
 
         dc21285_mtd->owner = THIS_MODULE;
 
-        mtd_device_parse_register(dc21285_mtd, probes, 0, NULL, 0);
+        mtd_device_parse_register(dc21285_mtd, probes, NULL, NULL, 0);
 
         if(machine_is_ebsa285()) {
                 /*
diff --git a/drivers/mtd/maps/gpio-addr-flash.c b/drivers/mtd/maps/gpio-addr-flash.c
index 33cce895859f..e4de96ba52b3 100644
--- a/drivers/mtd/maps/gpio-addr-flash.c
+++ b/drivers/mtd/maps/gpio-addr-flash.c
@@ -252,8 +252,8 @@ static int __devinit gpio_flash_probe(struct platform_device *pdev)
         }
 
 
-        mtd_device_parse_register(state->mtd, part_probe_types, 0,
-                        pdata->parts, pdata->nr_parts);
+        mtd_device_parse_register(state->mtd, part_probe_types, NULL,
+                                  pdata->parts, pdata->nr_parts);
 
         return 0;
 }
diff --git a/drivers/mtd/maps/h720x-flash.c b/drivers/mtd/maps/h720x-flash.c
index 49c14187fc66..8ed6cb4529d8 100644
--- a/drivers/mtd/maps/h720x-flash.c
+++ b/drivers/mtd/maps/h720x-flash.c
@@ -85,8 +85,8 @@ static int __init h720x_mtd_init(void)
         if (mymtd) {
                 mymtd->owner = THIS_MODULE;
 
-                mtd_device_parse_register(mymtd, NULL, 0,
-                                h720x_partitions, NUM_PARTITIONS);
+                mtd_device_parse_register(mymtd, NULL, NULL,
+                                          h720x_partitions, NUM_PARTITIONS);
                 return 0;
         }
 
diff --git a/drivers/mtd/maps/impa7.c b/drivers/mtd/maps/impa7.c
index f47aedb24366..834a06c56f56 100644
--- a/drivers/mtd/maps/impa7.c
+++ b/drivers/mtd/maps/impa7.c
@@ -91,7 +91,7 @@ static int __init init_impa7(void)
                 if (impa7_mtd[i]) {
                         impa7_mtd[i]->owner = THIS_MODULE;
                         devicesfound++;
-                        mtd_device_parse_register(impa7_mtd[i], NULL, 0,
+                        mtd_device_parse_register(impa7_mtd[i], NULL, NULL,
                                                   partitions,
                                                   ARRAY_SIZE(partitions));
                 }
diff --git a/drivers/mtd/maps/intel_vr_nor.c b/drivers/mtd/maps/intel_vr_nor.c
index 08c239604ee4..92e1f41634c7 100644
--- a/drivers/mtd/maps/intel_vr_nor.c
+++ b/drivers/mtd/maps/intel_vr_nor.c
@@ -72,7 +72,7 @@ static int __devinit vr_nor_init_partitions(struct vr_nor_mtd *p)
 {
         /* register the flash bank */
         /* partition the flash bank */
-        return mtd_device_parse_register(p->info, NULL, 0, NULL, 0);
+        return mtd_device_parse_register(p->info, NULL, NULL, NULL, 0);
 }
 
 static void __devexit vr_nor_destroy_mtd_setup(struct vr_nor_mtd *p)
diff --git a/drivers/mtd/maps/ixp2000.c b/drivers/mtd/maps/ixp2000.c
index fc7d4d0d9a4e..4a41ced0f710 100644
--- a/drivers/mtd/maps/ixp2000.c
+++ b/drivers/mtd/maps/ixp2000.c
@@ -226,7 +226,7 @@ static int ixp2000_flash_probe(struct platform_device *dev)
         }
         info->mtd->owner = THIS_MODULE;
 
-        err = mtd_device_parse_register(info->mtd, probes, 0, NULL, 0);
+        err = mtd_device_parse_register(info->mtd, probes, NULL, NULL, 0);
         if (err)
                 goto Error;
 
diff --git a/drivers/mtd/maps/ixp4xx.c b/drivers/mtd/maps/ixp4xx.c
index 8b5410162d70..e864fc6c58f9 100644
--- a/drivers/mtd/maps/ixp4xx.c
+++ b/drivers/mtd/maps/ixp4xx.c
@@ -182,6 +182,9 @@ static int ixp4xx_flash_probe(struct platform_device *dev)
 {
         struct flash_platform_data *plat = dev->dev.platform_data;
         struct ixp4xx_flash_info *info;
+        struct mtd_part_parser_data ppdata = {
+                .origin = dev->resource->start,
+        };
         int err = -1;
 
         if (!plat)
@@ -247,7 +250,7 @@ static int ixp4xx_flash_probe(struct platform_device *dev)
         /* Use the fast version */
         info->map.write = ixp4xx_write16;
 
-        err = mtd_device_parse_register(info->mtd, probes, dev->resource->start,
+        err = mtd_device_parse_register(info->mtd, probes, &ppdata,
                         plat->parts, plat->nr_parts);
         if (err) {
                 printk(KERN_ERR "Could not parse partitions\n");
diff --git a/drivers/mtd/maps/l440gx.c b/drivers/mtd/maps/l440gx.c
index dd0360ba2412..74bd98ee635f 100644
--- a/drivers/mtd/maps/l440gx.c
+++ b/drivers/mtd/maps/l440gx.c
@@ -27,17 +27,21 @@ static struct mtd_info *mymtd;
 
 
 /* Is this really the vpp port? */
+static DEFINE_SPINLOCK(l440gx_vpp_lock);
+static int l440gx_vpp_refcnt;
 static void l440gx_set_vpp(struct map_info *map, int vpp)
 {
-        unsigned long l;
+        unsigned long flags;
 
-        l = inl(VPP_PORT);
+        spin_lock_irqsave(&l440gx_vpp_lock, flags);
         if (vpp) {
-                l |= 1;
+                if (++l440gx_vpp_refcnt == 1)   /* first nested 'on' */
+                        outl(inl(VPP_PORT) | 1, VPP_PORT);
         } else {
-                l &= ~1;
+                if (--l440gx_vpp_refcnt == 0)   /* last nested 'off' */
+                        outl(inl(VPP_PORT) & ~1, VPP_PORT);
         }
-        outl(l, VPP_PORT);
+        spin_unlock_irqrestore(&l440gx_vpp_lock, flags);
 }
 
 static struct map_info l440gx_map = {
diff --git a/drivers/mtd/maps/lantiq-flash.c b/drivers/mtd/maps/lantiq-flash.c
index 7b889de9477b..b5401e355745 100644
--- a/drivers/mtd/maps/lantiq-flash.c
+++ b/drivers/mtd/maps/lantiq-flash.c
@@ -45,6 +45,7 @@ struct ltq_mtd {
 };
 
 static char ltq_map_name[] = "ltq_nor";
+static const char *ltq_probe_types[] __devinitconst = { "cmdlinepart", NULL };
 
 static map_word
 ltq_read16(struct map_info *map, unsigned long adr)
@@ -168,8 +169,9 @@ ltq_mtd_probe(struct platform_device *pdev)
         cfi->addr_unlock1 ^= 1;
         cfi->addr_unlock2 ^= 1;
 
-        err = mtd_device_parse_register(ltq_mtd->mtd, NULL, 0,
-                        ltq_mtd_data->parts, ltq_mtd_data->nr_parts);
+        err = mtd_device_parse_register(ltq_mtd->mtd, ltq_probe_types, NULL,
+                                        ltq_mtd_data->parts,
+                                        ltq_mtd_data->nr_parts);
         if (err) {
                 dev_err(&pdev->dev, "failed to add partitions\n");
                 goto err_destroy;
diff --git a/drivers/mtd/maps/latch-addr-flash.c b/drivers/mtd/maps/latch-addr-flash.c
index 8fed58e3a4a8..3c7ad17fca78 100644
--- a/drivers/mtd/maps/latch-addr-flash.c
+++ b/drivers/mtd/maps/latch-addr-flash.c
@@ -199,8 +199,9 @@ static int __devinit latch_addr_flash_probe(struct platform_device *dev)
         }
         info->mtd->owner = THIS_MODULE;
 
-        mtd_device_parse_register(info->mtd, NULL, 0,
-                        latch_addr_data->parts, latch_addr_data->nr_parts);
+        mtd_device_parse_register(info->mtd, NULL, NULL,
+                                  latch_addr_data->parts,
+                                  latch_addr_data->nr_parts);
         return 0;
 
 iounmap:
diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c
index 0259cf583022..a3cfad392ed6 100644
--- a/drivers/mtd/maps/pcmciamtd.c
+++ b/drivers/mtd/maps/pcmciamtd.c
@@ -294,13 +294,24 @@ static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *f
 }
 
 
+static DEFINE_SPINLOCK(pcmcia_vpp_lock);
+static int pcmcia_vpp_refcnt;
 static void pcmciamtd_set_vpp(struct map_info *map, int on)
 {
         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
         struct pcmcia_device *link = dev->p_dev;
+        unsigned long flags;
 
         pr_debug("dev = %p on = %d vpp = %d\n\n", dev, on, dev->vpp);
-        pcmcia_fixup_vpp(link, on ? dev->vpp : 0);
+        spin_lock_irqsave(&pcmcia_vpp_lock, flags);
+        if (on) {
+                if (++pcmcia_vpp_refcnt == 1)   /* first nested 'on' */
+                        pcmcia_fixup_vpp(link, dev->vpp);
+        } else {
+                if (--pcmcia_vpp_refcnt == 0)   /* last nested 'off' */
+                        pcmcia_fixup_vpp(link, 0);
+        }
+        spin_unlock_irqrestore(&pcmcia_vpp_lock, flags);
 }
 
 
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index abc562653b31..21b0b713cacb 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -27,6 +27,8 @@ struct physmap_flash_info {
         struct mtd_info         *mtd[MAX_RESOURCES];
         struct mtd_info         *cmtd;
         struct map_info         map[MAX_RESOURCES];
+        spinlock_t              vpp_lock;
+        int                     vpp_refcnt;
 };
 
 static int physmap_flash_remove(struct platform_device *dev)
@@ -63,12 +65,26 @@ static void physmap_set_vpp(struct map_info *map, int state)
 {
         struct platform_device *pdev;
         struct physmap_flash_data *physmap_data;
+        struct physmap_flash_info *info;
+        unsigned long flags;
 
         pdev = (struct platform_device *)map->map_priv_1;
         physmap_data = pdev->dev.platform_data;
 
-        if (physmap_data->set_vpp)
-                physmap_data->set_vpp(pdev, state);
+        if (!physmap_data->set_vpp)
+                return;
+
+        info = platform_get_drvdata(pdev);
+
+        spin_lock_irqsave(&info->vpp_lock, flags);
+        if (state) {
+                if (++info->vpp_refcnt == 1)    /* first nested 'on' */
+                        physmap_data->set_vpp(pdev, 1);
+        } else {
+                if (--info->vpp_refcnt == 0)    /* last nested 'off' */
+                        physmap_data->set_vpp(pdev, 0);
+        }
+        spin_unlock_irqrestore(&info->vpp_lock, flags);
 }
 
 static const char *rom_probe_types[] = {
@@ -172,9 +188,11 @@ static int physmap_flash_probe(struct platform_device *dev)
         if (err)
                 goto err_out;
 
+        spin_lock_init(&info->vpp_lock);
+
         part_types = physmap_data->part_probe_types ? : part_probe_types;
 
-        mtd_device_parse_register(info->cmtd, part_types, 0,
+        mtd_device_parse_register(info->cmtd, part_types, NULL,
                                   physmap_data->parts, physmap_data->nr_parts);
         return 0;
 
diff --git a/drivers/mtd/maps/plat-ram.c b/drivers/mtd/maps/plat-ram.c
index 45876d0e5b8e..891558de3ec1 100644
--- a/drivers/mtd/maps/plat-ram.c
+++ b/drivers/mtd/maps/plat-ram.c
@@ -222,8 +222,9 @@ static int platram_probe(struct platform_device *pdev)
         /* check to see if there are any available partitions, or wether
          * to add this device whole */
 
-        err = mtd_device_parse_register(info->mtd, pdata->probes, 0,
-                        pdata->partitions, pdata->nr_partitions);
+        err = mtd_device_parse_register(info->mtd, pdata->probes, NULL,
+                                        pdata->partitions,
+                                        pdata->nr_partitions);
         if (!err)
                 dev_info(&pdev->dev, "registered mtd device\n");
 
diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c
index 436d121185b1..81884c277405 100644
--- a/drivers/mtd/maps/pxa2xx-flash.c
+++ b/drivers/mtd/maps/pxa2xx-flash.c
@@ -98,7 +98,8 @@ static int __devinit pxa2xx_flash_probe(struct platform_device *pdev)
         }
         info->mtd->owner = THIS_MODULE;
 
-        mtd_device_parse_register(info->mtd, probes, 0, flash->parts, flash->nr_parts);
+        mtd_device_parse_register(info->mtd, probes, NULL, flash->parts,
+                                  flash->nr_parts);
 
         platform_set_drvdata(pdev, info);
         return 0;
diff --git a/drivers/mtd/maps/rbtx4939-flash.c b/drivers/mtd/maps/rbtx4939-flash.c
index 3da63fc6f16e..6f52e1f288b6 100644
--- a/drivers/mtd/maps/rbtx4939-flash.c
+++ b/drivers/mtd/maps/rbtx4939-flash.c
@@ -102,8 +102,8 @@ static int rbtx4939_flash_probe(struct platform_device *dev)
         info->mtd->owner = THIS_MODULE;
         if (err)
                 goto err_out;
-        err = mtd_device_parse_register(info->mtd, NULL, 0,
-                        pdata->parts, pdata->nr_parts);
+        err = mtd_device_parse_register(info->mtd, NULL, NULL, pdata->parts,
+                                        pdata->nr_parts);
 
         if (err)
                 goto err_out;
diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c
index cbc3b7867910..a675bdbcb0fe 100644
--- a/drivers/mtd/maps/sa1100-flash.c
+++ b/drivers/mtd/maps/sa1100-flash.c
@@ -36,10 +36,22 @@ struct sa_info {
         struct sa_subdev_info   subdev[0];
 };
 
+static DEFINE_SPINLOCK(sa1100_vpp_lock);
+static int sa1100_vpp_refcnt;
 static void sa1100_set_vpp(struct map_info *map, int on)
 {
         struct sa_subdev_info *subdev = container_of(map, struct sa_subdev_info, map);
-        subdev->plat->set_vpp(on);
+        unsigned long flags;
+
+        spin_lock_irqsave(&sa1100_vpp_lock, flags);
+        if (on) {
+                if (++sa1100_vpp_refcnt == 1)   /* first nested 'on' */
+                        subdev->plat->set_vpp(1);
+        } else {
+                if (--sa1100_vpp_refcnt == 0)   /* last nested 'off' */
+                        subdev->plat->set_vpp(0);
+        }
+        spin_unlock_irqrestore(&sa1100_vpp_lock, flags);
 }
 
 static void sa1100_destroy_subdev(struct sa_subdev_info *subdev)
@@ -252,8 +264,8 @@ static int __devinit sa1100_mtd_probe(struct platform_device *pdev)
         /*
          * Partition selection stuff.
          */
-        mtd_device_parse_register(info->mtd, part_probes, 0,
-                        plat->parts, plat->nr_parts);
+        mtd_device_parse_register(info->mtd, part_probes, NULL, plat->parts,
+                                  plat->nr_parts);
 
         platform_set_drvdata(pdev, info);
         err = 0;
diff --git a/drivers/mtd/maps/solutionengine.c b/drivers/mtd/maps/solutionengine.c
index 496c40704aff..9d900ada6708 100644
--- a/drivers/mtd/maps/solutionengine.c
+++ b/drivers/mtd/maps/solutionengine.c
@@ -92,8 +92,8 @@ static int __init init_soleng_maps(void)
                 mtd_device_register(eprom_mtd, NULL, 0);
         }
 
-        mtd_device_parse_register(flash_mtd, probes, 0,
-                        superh_se_partitions, NUM_PARTITIONS);
+        mtd_device_parse_register(flash_mtd, probes, NULL,
+                                  superh_se_partitions, NUM_PARTITIONS);
 
         return 0;
 }
diff --git a/drivers/mtd/maps/uclinux.c b/drivers/mtd/maps/uclinux.c
index 6793074f3f40..cfff454f628b 100644
--- a/drivers/mtd/maps/uclinux.c
+++ b/drivers/mtd/maps/uclinux.c
@@ -85,7 +85,7 @@ static int __init uclinux_mtd_init(void)
         }
 
         mtd->owner = THIS_MODULE;
-        mtd->point = uclinux_point;
+        mtd->_point = uclinux_point;
         mtd->priv = mapp;
 
         uclinux_ram_mtdinfo = mtd;
diff --git a/drivers/mtd/maps/vmu-flash.c b/drivers/mtd/maps/vmu-flash.c
index 3a04b078576a..2e2b0945edc7 100644
--- a/drivers/mtd/maps/vmu-flash.c
+++ b/drivers/mtd/maps/vmu-flash.c
@@ -360,9 +360,6 @@ static int vmu_flash_read(struct mtd_info *mtd, loff_t from, size_t len,
         int index = 0, retval, partition, leftover, numblocks;
         unsigned char cx;
 
-        if (len < 1)
-                return -EIO;
-
         mpart = mtd->priv;
         mdev = mpart->mdev;
         partition = mpart->partition;
@@ -434,11 +431,6 @@ static int vmu_flash_write(struct mtd_info *mtd, loff_t to, size_t len,
         partition = mpart->partition;
         card = maple_get_drvdata(mdev);
 
-        /* simple sanity checks */
-        if (len < 1) {
-                error = -EIO;
-                goto failed;
-        }
         numblocks = card->parts[partition].numblocks;
         if (to + len > numblocks * card->blocklen)
                 len = numblocks * card->blocklen - to;
@@ -544,9 +536,9 @@ static void vmu_queryblocks(struct mapleq *mq)
         mtd_cur->flags = MTD_WRITEABLE|MTD_NO_ERASE;
         mtd_cur->size = part_cur->numblocks * card->blocklen;
         mtd_cur->erasesize = card->blocklen;
-        mtd_cur->write = vmu_flash_write;
-        mtd_cur->read = vmu_flash_read;
-        mtd_cur->sync = vmu_flash_sync;
+        mtd_cur->_write = vmu_flash_write;
+        mtd_cur->_read = vmu_flash_read;
+        mtd_cur->_sync = vmu_flash_sync;
         mtd_cur->writesize = card->blocklen;
 
         mpart = kmalloc(sizeof(struct mdev_part), GFP_KERNEL);
diff --git a/drivers/mtd/maps/wr_sbc82xx_flash.c b/drivers/mtd/maps/wr_sbc82xx_flash.c
index aa7e0cb2893c..71b0ba797912 100644
--- a/drivers/mtd/maps/wr_sbc82xx_flash.c
+++ b/drivers/mtd/maps/wr_sbc82xx_flash.c
@@ -142,7 +142,7 @@ static int __init init_sbc82xx_flash(void)
                         nr_parts = ARRAY_SIZE(smallflash_parts);
                 }
 
-                mtd_device_parse_register(sbcmtd[i], part_probes, 0,
+                mtd_device_parse_register(sbcmtd[i], part_probes, NULL,
                                           defparts, nr_parts);
         }
         return 0;
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 424ca5f93c6c..f1f06715d4e0 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -233,6 +233,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
         ret = __get_mtd_device(dev->mtd);
         if (ret)
                 goto error_release;
+        dev->file_mode = mode;
 
 unlock:
         dev->open++;
diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c
index af6591237b9b..6c6d80736fad 100644
--- a/drivers/mtd/mtdblock.c
+++ b/drivers/mtd/mtdblock.c
@@ -321,8 +321,12 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd)
         mutex_unlock(&mtdblk->cache_mutex);
 
         if (!--mtdblk->count) {
-                /* It was the last usage. Free the cache */
-                mtd_sync(mbd->mtd);
+                /*
+                 * It was the last usage. Free the cache, but only sync if
+                 * opened for writing.
+                 */
+                if (mbd->file_mode & FMODE_WRITE)
+                        mtd_sync(mbd->mtd);
                 vfree(mtdblk->cache_data);
         }
 
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index c57ae92ebda4..55d82321d307 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -405,7 +405,7 @@ static int mtdchar_writeoob(struct file *file, struct mtd_info *mtd,
         if (length > 4096)
                 return -EINVAL;
 
-        if (!mtd->write_oob)
+        if (!mtd->_write_oob)
                 ret = -EOPNOTSUPP;
         else
                 ret = access_ok(VERIFY_READ, ptr, length) ? 0 : -EFAULT;
@@ -576,7 +576,7 @@ static int mtdchar_write_ioctl(struct mtd_info *mtd,
                         !access_ok(VERIFY_READ, req.usr_data, req.len) ||
                         !access_ok(VERIFY_READ, req.usr_oob, req.ooblen))
                 return -EFAULT;
-        if (!mtd->write_oob)
+        if (!mtd->_write_oob)
                 return -EOPNOTSUPP;
 
         ops.mode = req.mode;
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 1ed5103b219b..b9000563b9f4 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -72,8 +72,6 @@ concat_read(struct mtd_info *mtd, loff_t from, size_t len,
         int ret = 0, err;
         int i;
 
-        *retlen = 0;
-
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
                 size_t size, retsize;
@@ -126,11 +124,6 @@ concat_write(struct mtd_info *mtd, loff_t to, size_t len,
         int err = -EINVAL;
         int i;
 
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-
-        *retlen = 0;
-
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
                 size_t size, retsize;
@@ -145,11 +138,7 @@ concat_write(struct mtd_info *mtd, loff_t to, size_t len,
                 else
                         size = len;
 
-                if (!(subdev->flags & MTD_WRITEABLE))
-                        err = -EROFS;
-                else
-                        err = mtd_write(subdev, to, size, &retsize, buf);
-
+                err = mtd_write(subdev, to, size, &retsize, buf);
                 if (err)
                         break;
 
@@ -176,19 +165,10 @@ concat_writev(struct mtd_info *mtd, const struct kvec *vecs,
         int i;
         int err = -EINVAL;
 
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-
-        *retlen = 0;
-
         /* Calculate total length of data */
         for (i = 0; i < count; i++)
                 total_len += vecs[i].iov_len;
 
-        /* Do not allow write past end of device */
-        if ((to + total_len) > mtd->size)
-                return -EINVAL;
-
         /* Check alignment */
         if (mtd->writesize > 1) {
                 uint64_t __to = to;
@@ -224,12 +204,8 @@ concat_writev(struct mtd_info *mtd, const struct kvec *vecs,
                 old_iov_len = vecs_copy[entry_high].iov_len;
                 vecs_copy[entry_high].iov_len = size;
 
-                if (!(subdev->flags & MTD_WRITEABLE))
-                        err = -EROFS;
-                else
-                        err = mtd_writev(subdev, &vecs_copy[entry_low],
-                                         entry_high - entry_low + 1, to,
-                                         &retsize);
+                err = mtd_writev(subdev, &vecs_copy[entry_low],
+                                 entry_high - entry_low + 1, to, &retsize);
 
                 vecs_copy[entry_high].iov_len = old_iov_len - size;
                 vecs_copy[entry_high].iov_base += size;
@@ -403,15 +379,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
         uint64_t length, offset = 0;
         struct erase_info *erase;
 
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-
-        if (instr->addr > concat->mtd.size)
-                return -EINVAL;
-
-        if (instr->len + instr->addr > concat->mtd.size)
-                return -EINVAL;
-
         /*
          * Check for proper erase block alignment of the to-be-erased area.
          * It is easier to do this based on the super device's erase
@@ -459,8 +426,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
                         return -EINVAL;
         }
 
-        instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
-
         /* make a local copy of instr to avoid modifying the caller's struct */
         erase = kmalloc(sizeof (struct erase_info), GFP_KERNEL);
 
@@ -499,10 +464,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
                 else
                         erase->len = length;
 
-                if (!(subdev->flags & MTD_WRITEABLE)) {
-                        err = -EROFS;
-                        break;
-                }
                 length -= erase->len;
                 if ((err = concat_dev_erase(subdev, erase))) {
                         /* sanity check: should never happen since
@@ -538,9 +499,6 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
         struct mtd_concat *concat = CONCAT(mtd);
         int i, err = -EINVAL;
 
-        if ((len + ofs) > mtd->size)
-                return -EINVAL;
-
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
                 uint64_t size;
@@ -575,9 +533,6 @@ static int concat_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
         struct mtd_concat *concat = CONCAT(mtd);
         int i, err = 0;
 
-        if ((len + ofs) > mtd->size)
-                return -EINVAL;
-
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
                 uint64_t size;
@@ -650,9 +605,6 @@ static int concat_block_isbad(struct mtd_info *mtd, loff_t ofs)
         if (!mtd_can_have_bb(concat->subdev[0]))
                 return res;
 
-        if (ofs > mtd->size)
-                return -EINVAL;
-
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
 
@@ -673,12 +625,6 @@ static int concat_block_markbad(struct mtd_info *mtd, loff_t ofs)
         struct mtd_concat *concat = CONCAT(mtd);
         int i, err = -EINVAL;
 
-        if (!mtd_can_have_bb(concat->subdev[0]))
-                return 0;
-
-        if (ofs > mtd->size)
-                return -EINVAL;
-
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
 
@@ -716,10 +662,6 @@ static unsigned long concat_get_unmapped_area(struct mtd_info *mtd,
                         continue;
                 }
 
-                /* we've found the subdev over which the mapping will reside */
-                if (offset + len > subdev->size)
-                        return (unsigned long) -EINVAL;
-
                 return mtd_get_unmapped_area(subdev, len, offset, flags);
         }
 
@@ -777,16 +719,16 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
         concat->mtd.subpage_sft = subdev[0]->subpage_sft;
         concat->mtd.oobsize = subdev[0]->oobsize;
         concat->mtd.oobavail = subdev[0]->oobavail;
-        if (subdev[0]->writev)
-                concat->mtd.writev = concat_writev;
-        if (subdev[0]->read_oob)
-                concat->mtd.read_oob = concat_read_oob;
-        if (subdev[0]->write_oob)
-                concat->mtd.write_oob = concat_write_oob;
-        if (subdev[0]->block_isbad)
-                concat->mtd.block_isbad = concat_block_isbad;
-        if (subdev[0]->block_markbad)
-                concat->mtd.block_markbad = concat_block_markbad;
+        if (subdev[0]->_writev)
+                concat->mtd._writev = concat_writev;
+        if (subdev[0]->_read_oob)
+                concat->mtd._read_oob = concat_read_oob;
+        if (subdev[0]->_write_oob)
+                concat->mtd._write_oob = concat_write_oob;
+        if (subdev[0]->_block_isbad)
+                concat->mtd._block_isbad = concat_block_isbad;
+        if (subdev[0]->_block_markbad)
+                concat->mtd._block_markbad = concat_block_markbad;
 
         concat->mtd.ecc_stats.badblocks = subdev[0]->ecc_stats.badblocks;
 
@@ -833,8 +775,8 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                 if (concat->mtd.writesize   !=  subdev[i]->writesize ||
                     concat->mtd.subpage_sft != subdev[i]->subpage_sft ||
                     concat->mtd.oobsize    !=  subdev[i]->oobsize ||
-                    !concat->mtd.read_oob  != !subdev[i]->read_oob ||
-                    !concat->mtd.write_oob != !subdev[i]->write_oob) {
+                    !concat->mtd._read_oob  != !subdev[i]->_read_oob ||
+                    !concat->mtd._write_oob != !subdev[i]->_write_oob) {
                         kfree(concat);
                         printk("Incompatible OOB or ECC data on \"%s\"\n",
                                subdev[i]->name);
@@ -849,15 +791,15 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
         concat->num_subdev = num_devs;
         concat->mtd.name = name;
 
-        concat->mtd.erase = concat_erase;
-        concat->mtd.read = concat_read;
-        concat->mtd.write = concat_write;
-        concat->mtd.sync = concat_sync;
-        concat->mtd.lock = concat_lock;
-        concat->mtd.unlock = concat_unlock;
-        concat->mtd.suspend = concat_suspend;
-        concat->mtd.resume = concat_resume;
-        concat->mtd.get_unmapped_area = concat_get_unmapped_area;
+        concat->mtd._erase = concat_erase;
+        concat->mtd._read = concat_read;
+        concat->mtd._write = concat_write;
+        concat->mtd._sync = concat_sync;
+        concat->mtd._lock = concat_lock;
+        concat->mtd._unlock = concat_unlock;
+        concat->mtd._suspend = concat_suspend;
+        concat->mtd._resume = concat_resume;
+        concat->mtd._get_unmapped_area = concat_get_unmapped_area;
 
         /*
          * Combine the erase block size info of the subdevices:
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 9a9ce71a71fc..c837507dfb1c 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -107,7 +107,7 @@ static LIST_HEAD(mtd_notifiers);
  */
 static void mtd_release(struct device *dev)
 {
-        struct mtd_info *mtd = dev_get_drvdata(dev);
+        struct mtd_info __maybe_unused *mtd = dev_get_drvdata(dev);
         dev_t index = MTD_DEVT(mtd->index);
 
         /* remove /dev/mtdXro node if needed */
@@ -126,7 +126,7 @@ static int mtd_cls_resume(struct device *dev)
 {
         struct mtd_info *mtd = dev_get_drvdata(dev);
 
-        if (mtd && mtd->resume)
+        if (mtd)
                 mtd_resume(mtd);
         return 0;
 }
@@ -610,8 +610,8 @@ int __get_mtd_device(struct mtd_info *mtd)
         if (!try_module_get(mtd->owner))
                 return -ENODEV;
 
-        if (mtd->get_device) {
-                err = mtd->get_device(mtd);
+        if (mtd->_get_device) {
+                err = mtd->_get_device(mtd);
 
                 if (err) {
                         module_put(mtd->owner);
@@ -675,14 +675,267 @@ void __put_mtd_device(struct mtd_info *mtd)
         --mtd->usecount;
         BUG_ON(mtd->usecount < 0);
 
-        if (mtd->put_device)
-                mtd->put_device(mtd);
+        if (mtd->_put_device)
+                mtd->_put_device(mtd);
 
         module_put(mtd->owner);
 }
 EXPORT_SYMBOL_GPL(__put_mtd_device);
 
 /*
+ * Erase is an asynchronous operation.  Device drivers are supposed
+ * to call instr->callback() whenever the operation completes, even
+ * if it completes with a failure.
+ * Callers are supposed to pass a callback function and wait for it
+ * to be called before writing to the block.
+ */
+int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+        if (instr->addr > mtd->size || instr->len > mtd->size - instr->addr)
+                return -EINVAL;
+        if (!(mtd->flags & MTD_WRITEABLE))
+                return -EROFS;
+        instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
+        if (!instr->len) {
+                instr->state = MTD_ERASE_DONE;
+                mtd_erase_callback(instr);
+                return 0;
+        }
+        return mtd->_erase(mtd, instr);
+}
+EXPORT_SYMBOL_GPL(mtd_erase);
+
+/*
+ * This stuff for eXecute-In-Place. phys is optional and may be set to NULL.
+ */
+int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
+              void **virt, resource_size_t *phys)
+{
+        *retlen = 0;
+        *virt = NULL;
+        if (phys)
+                *phys = 0;
+        if (!mtd->_point)
+                return -EOPNOTSUPP;
+        if (from < 0 || from > mtd->size || len > mtd->size - from)
+                return -EINVAL;
+        if (!len)
+                return 0;
+        return mtd->_point(mtd, from, len, retlen, virt, phys);
+}
+EXPORT_SYMBOL_GPL(mtd_point);
+
+/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
+int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+{
+        if (!mtd->_point)
+                return -EOPNOTSUPP;
+        if (from < 0 || from > mtd->size || len > mtd->size - from)
+                return -EINVAL;
+        if (!len)
+                return 0;
+        return mtd->_unpoint(mtd, from, len);
+}
+EXPORT_SYMBOL_GPL(mtd_unpoint);
+
+/*
+ * Allow NOMMU mmap() to directly map the device (if not NULL)
+ * - return the address to which the offset maps
+ * - return -ENOSYS to indicate refusal to do the mapping
+ */
+unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len,
+                                    unsigned long offset, unsigned long flags)
+{
+        if (!mtd->_get_unmapped_area)
+                return -EOPNOTSUPP;
+        if (offset > mtd->size || len > mtd->size - offset)
+                return -EINVAL;
+        return mtd->_get_unmapped_area(mtd, len, offset, flags);
+}
+EXPORT_SYMBOL_GPL(mtd_get_unmapped_area);
+
+int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
+             u_char *buf)
+{
+        *retlen = 0;
+        if (from < 0 || from > mtd->size || len > mtd->size - from)
+                return -EINVAL;
+        if (!len)
+                return 0;
+        return mtd->_read(mtd, from, len, retlen, buf);
+}
+EXPORT_SYMBOL_GPL(mtd_read);
+
+int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
+              const u_char *buf)
+{
+        *retlen = 0;
+        if (to < 0 || to > mtd->size || len > mtd->size - to)
+                return -EINVAL;
+        if (!mtd->_write || !(mtd->flags & MTD_WRITEABLE))
+                return -EROFS;
+        if (!len)
+                return 0;
+        return mtd->_write(mtd, to, len, retlen, buf);
+}
+EXPORT_SYMBOL_GPL(mtd_write);
+
+/*
+ * In blackbox flight recorder like scenarios we want to make successful writes
+ * in interrupt context. panic_write() is only intended to be called when its
+ * known the kernel is about to panic and we need the write to succeed. Since
+ * the kernel is not going to be running for much longer, this function can
+ * break locks and delay to ensure the write succeeds (but not sleep).
+ */
+int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
+                    const u_char *buf)
+{
+        *retlen = 0;
+        if (!mtd->_panic_write)
+                return -EOPNOTSUPP;
+        if (to < 0 || to > mtd->size || len > mtd->size - to)
+                return -EINVAL;
+        if (!(mtd->flags & MTD_WRITEABLE))
+                return -EROFS;
+        if (!len)
+                return 0;
+        return mtd->_panic_write(mtd, to, len, retlen, buf);
+}
+EXPORT_SYMBOL_GPL(mtd_panic_write);
+
+/*
+ * Method to access the protection register area, present in some flash
+ * devices. The user data is one time programmable but the factory data is read
+ * only.
+ */
+int mtd_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
+                           size_t len)
+{
+        if (!mtd->_get_fact_prot_info)
+                return -EOPNOTSUPP;
+        if (!len)
+                return 0;
+        return mtd->_get_fact_prot_info(mtd, buf, len);
+}
+EXPORT_SYMBOL_GPL(mtd_get_fact_prot_info);
+
+int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
+                           size_t *retlen, u_char *buf)
+{
+        *retlen = 0;
+        if (!mtd->_read_fact_prot_reg)
+                return -EOPNOTSUPP;
+        if (!len)
+                return 0;
+        return mtd->_read_fact_prot_reg(mtd, from, len, retlen, buf);
+}
+EXPORT_SYMBOL_GPL(mtd_read_fact_prot_reg);
+
+int mtd_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf,
+                           size_t len)
+{
+        if (!mtd->_get_user_prot_info)
+                return -EOPNOTSUPP;
+        if (!len)
+                return 0;
+        return mtd->_get_user_prot_info(mtd, buf, len);
+}
+EXPORT_SYMBOL_GPL(mtd_get_user_prot_info);
+
+int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
+                           size_t *retlen, u_char *buf)
+{
+        *retlen = 0;
+        if (!mtd->_read_user_prot_reg)
+                return -EOPNOTSUPP;
+        if (!len)
+                return 0;
+        return mtd->_read_user_prot_reg(mtd, from, len, retlen, buf);
+}
+EXPORT_SYMBOL_GPL(mtd_read_user_prot_reg);
+
+int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len,
+                            size_t *retlen, u_char *buf)
+{
+        *retlen = 0;
+        if (!mtd->_write_user_prot_reg)
+                return -EOPNOTSUPP;
+        if (!len)
+                return 0;
+        return mtd->_write_user_prot_reg(mtd, to, len, retlen, buf);
+}
+EXPORT_SYMBOL_GPL(mtd_write_user_prot_reg);
+
+int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len)
+{
+        if (!mtd->_lock_user_prot_reg)
+                return -EOPNOTSUPP;
+        if (!len)
+                return 0;
+        return mtd->_lock_user_prot_reg(mtd, from, len);
+}
+EXPORT_SYMBOL_GPL(mtd_lock_user_prot_reg);
+
+/* Chip-supported device locking */
+int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+        if (!mtd->_lock)
+                return -EOPNOTSUPP;
+        if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
+                return -EINVAL;
+        if (!len)
+                return 0;
+        return mtd->_lock(mtd, ofs, len);
+}
+EXPORT_SYMBOL_GPL(mtd_lock);
+
+int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+        if (!mtd->_unlock)
+                return -EOPNOTSUPP;
+        if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
+                return -EINVAL;
+        if (!len)
+                return 0;
+        return mtd->_unlock(mtd, ofs, len);
+}
+EXPORT_SYMBOL_GPL(mtd_unlock);
+
+int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+        if (!mtd->_is_locked)
+                return -EOPNOTSUPP;
+        if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
+                return -EINVAL;
+        if (!len)
+                return 0;
+        return mtd->_is_locked(mtd, ofs, len);
+}
+EXPORT_SYMBOL_GPL(mtd_is_locked);
+
+int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
+{
+        if (!mtd->_block_isbad)
+                return 0;
+        if (ofs < 0 || ofs > mtd->size)
+                return -EINVAL;
+        return mtd->_block_isbad(mtd, ofs);
+}
+EXPORT_SYMBOL_GPL(mtd_block_isbad);
+
+int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)
+{
+        if (!mtd->_block_markbad)
+                return -EOPNOTSUPP;
+        if (ofs < 0 || ofs > mtd->size)
+                return -EINVAL;
+        if (!(mtd->flags & MTD_WRITEABLE))
+                return -EROFS;
+        return mtd->_block_markbad(mtd, ofs);
+}
+EXPORT_SYMBOL_GPL(mtd_block_markbad);
+
+/*
  * default_mtd_writev - the default writev method
  * @mtd: mtd device description object pointer
  * @vecs: the vectors to write
@@ -729,9 +982,11 @@ int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
                unsigned long count, loff_t to, size_t *retlen)
 {
         *retlen = 0;
-        if (!mtd->writev)
+        if (!(mtd->flags & MTD_WRITEABLE))
+                return -EROFS;
+        if (!mtd->_writev)
                 return default_mtd_writev(mtd, vecs, count, to, retlen);
-        return mtd->writev(mtd, vecs, count, to, retlen);
+        return mtd->_writev(mtd, vecs, count, to, retlen);
 }
 EXPORT_SYMBOL_GPL(mtd_writev);
 
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index 3ce99e00a49e..ae36d7e1e913 100644
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -169,7 +169,7 @@ static void mtdoops_workfunc_erase(struct work_struct *work)
                         cxt->nextpage = 0;
         }
 
-        while (mtd_can_have_bb(mtd)) {
+        while (1) {
                 ret = mtd_block_isbad(mtd, cxt->nextpage * record_size);
                 if (!ret)
                         break;
@@ -199,9 +199,9 @@ badblock:
                 return;
         }
 
-        if (mtd_can_have_bb(mtd) && ret == -EIO) {
+        if (ret == -EIO) {
                 ret = mtd_block_markbad(mtd, cxt->nextpage * record_size);
-                if (ret < 0) {
+                if (ret < 0 && ret != -EOPNOTSUPP) {
                         printk(KERN_ERR "mtdoops: block_markbad failed, aborting\n");
                         return;
                 }
@@ -257,8 +257,7 @@ static void find_next_position(struct mtdoops_context *cxt)
         size_t retlen;
 
         for (page = 0; page < cxt->oops_pages; page++) {
-                if (mtd_can_have_bb(mtd) &&
-                    mtd_block_isbad(mtd, page * record_size))
+                if (mtd_block_isbad(mtd, page * record_size))
                         continue;
                 /* Assume the page is used */
                 mark_page_used(cxt, page);
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index a3d44c3416b4..9651c06de0a9 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -65,12 +65,8 @@ static int part_read(struct mtd_info *mtd, loff_t from, size_t len,
         int res;
 
         stats = part->master->ecc_stats;
-
-        if (from >= mtd->size)
-                len = 0;
-        else if (from + len > mtd->size)
-                len = mtd->size - from;
-        res = mtd_read(part->master, from + part->offset, len, retlen, buf);
+        res = part->master->_read(part->master, from + part->offset, len,
+                                  retlen, buf);
         if (unlikely(res)) {
                 if (mtd_is_bitflip(res))
                         mtd->ecc_stats.corrected += part->master->ecc_stats.corrected - stats.corrected;
@@ -84,19 +80,16 @@ static int part_point(struct mtd_info *mtd, loff_t from, size_t len,
                 size_t *retlen, void **virt, resource_size_t *phys)
 {
         struct mtd_part *part = PART(mtd);
-        if (from >= mtd->size)
-                len = 0;
-        else if (from + len > mtd->size)
-                len = mtd->size - from;
-        return mtd_point(part->master, from + part->offset, len, retlen,
-                         virt, phys);
+
+        return part->master->_point(part->master, from + part->offset, len,
+                                    retlen, virt, phys);
 }
 
-static void part_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+static int part_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
         struct mtd_part *part = PART(mtd);
 
-        mtd_unpoint(part->master, from + part->offset, len);
+        return part->master->_unpoint(part->master, from + part->offset, len);
 }
 
 static unsigned long part_get_unmapped_area(struct mtd_info *mtd,
@@ -107,7 +100,8 @@ static unsigned long part_get_unmapped_area(struct mtd_info *mtd,
         struct mtd_part *part = PART(mtd);
 
         offset += part->offset;
-        return mtd_get_unmapped_area(part->master, len, offset, flags);
+        return part->master->_get_unmapped_area(part->master, len, offset,
+                                                flags);
 }
 
 static int part_read_oob(struct mtd_info *mtd, loff_t from,
@@ -138,7 +132,7 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from,
                         return -EINVAL;
         }
 
-        res = mtd_read_oob(part->master, from + part->offset, ops);
+        res = part->master->_read_oob(part->master, from + part->offset, ops);
         if (unlikely(res)) {
                 if (mtd_is_bitflip(res))
                         mtd->ecc_stats.corrected++;
@@ -152,55 +146,46 @@ static int part_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
                 size_t len, size_t *retlen, u_char *buf)
 {
         struct mtd_part *part = PART(mtd);
-        return mtd_read_user_prot_reg(part->master, from, len, retlen, buf);
+        return part->master->_read_user_prot_reg(part->master, from, len,
+                                                 retlen, buf);
 }
 
 static int part_get_user_prot_info(struct mtd_info *mtd,
                 struct otp_info *buf, size_t len)
 {
         struct mtd_part *part = PART(mtd);
-        return mtd_get_user_prot_info(part->master, buf, len);
+        return part->master->_get_user_prot_info(part->master, buf, len);
 }
 
 static int part_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
                 size_t len, size_t *retlen, u_char *buf)
 {
         struct mtd_part *part = PART(mtd);
-        return mtd_read_fact_prot_reg(part->master, from, len, retlen, buf);
+        return part->master->_read_fact_prot_reg(part->master, from, len,
+                                                 retlen, buf);
 }
 
 static int part_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
                 size_t len)
 {
         struct mtd_part *part = PART(mtd);
-        return mtd_get_fact_prot_info(part->master, buf, len);
+        return part->master->_get_fact_prot_info(part->master, buf, len);
 }
 
 static int part_write(struct mtd_info *mtd, loff_t to, size_t len,
                 size_t *retlen, const u_char *buf)
 {
         struct mtd_part *part = PART(mtd);
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-        if (to >= mtd->size)
-                len = 0;
-        else if (to + len > mtd->size)
-                len = mtd->size - to;
-        return mtd_write(part->master, to + part->offset, len, retlen, buf);
+        return part->master->_write(part->master, to + part->offset, len,
+                                    retlen, buf);
 }
 
 static int part_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
                 size_t *retlen, const u_char *buf)
 {
         struct mtd_part *part = PART(mtd);
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-        if (to >= mtd->size)
-                len = 0;
-        else if (to + len > mtd->size)
-                len = mtd->size - to;
-        return mtd_panic_write(part->master, to + part->offset, len, retlen,
-                               buf);
+        return part->master->_panic_write(part->master, to + part->offset, len,
+                                          retlen, buf);
 }
 
 static int part_write_oob(struct mtd_info *mtd, loff_t to,
@@ -208,50 +193,43 @@ static int part_write_oob(struct mtd_info *mtd, loff_t to,
 {
         struct mtd_part *part = PART(mtd);
 
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-
         if (to >= mtd->size)
                 return -EINVAL;
         if (ops->datbuf && to + ops->len > mtd->size)
                 return -EINVAL;
-        return mtd_write_oob(part->master, to + part->offset, ops);
+        return part->master->_write_oob(part->master, to + part->offset, ops);
 }
 
 static int part_write_user_prot_reg(struct mtd_info *mtd, loff_t from,
                 size_t len, size_t *retlen, u_char *buf)
 {
         struct mtd_part *part = PART(mtd);
-        return mtd_write_user_prot_reg(part->master, from, len, retlen, buf);
+        return part->master->_write_user_prot_reg(part->master, from, len,
+                                                  retlen, buf);
 }
 
 static int part_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
                 size_t len)
 {
         struct mtd_part *part = PART(mtd);
-        return mtd_lock_user_prot_reg(part->master, from, len);
+        return part->master->_lock_user_prot_reg(part->master, from, len);
 }
 
 static int part_writev(struct mtd_info *mtd, const struct kvec *vecs,
                 unsigned long count, loff_t to, size_t *retlen)
 {
         struct mtd_part *part = PART(mtd);
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-        return mtd_writev(part->master, vecs, count, to + part->offset,
-                          retlen);
+        return part->master->_writev(part->master, vecs, count,
+                                     to + part->offset, retlen);
 }
 
 static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
         struct mtd_part *part = PART(mtd);
         int ret;
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-        if (instr->addr >= mtd->size)
-                return -EINVAL;
+
         instr->addr += part->offset;
-        ret = mtd_erase(part->master, instr);
+        ret = part->master->_erase(part->master, instr);
         if (ret) {
                 if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
                         instr->fail_addr -= part->offset;
@@ -262,7 +240,7 @@ static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 void mtd_erase_callback(struct erase_info *instr)
 {
-        if (instr->mtd->erase == part_erase) {
+        if (instr->mtd->_erase == part_erase) {
                 struct mtd_part *part = PART(instr->mtd);
 
                 if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
@@ -277,52 +255,44 @@ EXPORT_SYMBOL_GPL(mtd_erase_callback);
 static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_part *part = PART(mtd);
-        if ((len + ofs) > mtd->size)
-                return -EINVAL;
-        return mtd_lock(part->master, ofs + part->offset, len);
+        return part->master->_lock(part->master, ofs + part->offset, len);
 }
 
 static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_part *part = PART(mtd);
-        if ((len + ofs) > mtd->size)
-                return -EINVAL;
-        return mtd_unlock(part->master, ofs + part->offset, len);
+        return part->master->_unlock(part->master, ofs + part->offset, len);
 }
 
 static int part_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_part *part = PART(mtd);
-        if ((len + ofs) > mtd->size)
-                return -EINVAL;
-        return mtd_is_locked(part->master, ofs + part->offset, len);
+        return part->master->_is_locked(part->master, ofs + part->offset, len);
 }
 
 static void part_sync(struct mtd_info *mtd)
 {
         struct mtd_part *part = PART(mtd);
-        mtd_sync(part->master);
+        part->master->_sync(part->master);
 }
 
 static int part_suspend(struct mtd_info *mtd)
 {
         struct mtd_part *part = PART(mtd);
-        return mtd_suspend(part->master);
+        return part->master->_suspend(part->master);
 }
 
 static void part_resume(struct mtd_info *mtd)
 {
         struct mtd_part *part = PART(mtd);
-        mtd_resume(part->master);
+        part->master->_resume(part->master);
 }
 
 static int part_block_isbad(struct mtd_info *mtd, loff_t ofs)
 {
         struct mtd_part *part = PART(mtd);
-        if (ofs >= mtd->size)
-                return -EINVAL;
         ofs += part->offset;
-        return mtd_block_isbad(part->master, ofs);
+        return part->master->_block_isbad(part->master, ofs);
 }
 
 static int part_block_markbad(struct mtd_info *mtd, loff_t ofs)
@@ -330,12 +300,8 @@ static int part_block_markbad(struct mtd_info *mtd, loff_t ofs)
         struct mtd_part *part = PART(mtd);
         int res;
 
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-        if (ofs >= mtd->size)
-                return -EINVAL;
         ofs += part->offset;
-        res = mtd_block_markbad(part->master, ofs);
+        res = part->master->_block_markbad(part->master, ofs);
         if (!res)
                 mtd->ecc_stats.badblocks++;
         return res;
@@ -410,54 +376,55 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
          */
         slave->mtd.dev.parent = master->dev.parent;
 
-        slave->mtd.read = part_read;
-        slave->mtd.write = part_write;
+        slave->mtd._read = part_read;
+        slave->mtd._write = part_write;
 
-        if (master->panic_write)
-                slave->mtd.panic_write = part_panic_write;
+        if (master->_panic_write)
+                slave->mtd._panic_write = part_panic_write;
 
-        if (master->point && master->unpoint) {
-                slave->mtd.point = part_point;
-                slave->mtd.unpoint = part_unpoint;
+        if (master->_point && master->_unpoint) {
+                slave->mtd._point = part_point;
+                slave->mtd._unpoint = part_unpoint;
         }
 
-        if (master->get_unmapped_area)
-                slave->mtd.get_unmapped_area = part_get_unmapped_area;
-        if (master->read_oob)
-                slave->mtd.read_oob = part_read_oob;
-        if (master->write_oob)
-                slave->mtd.write_oob = part_write_oob;
-        if (master->read_user_prot_reg)
-                slave->mtd.read_user_prot_reg = part_read_user_prot_reg;
-        if (master->read_fact_prot_reg)
-                slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg;
-        if (master->write_user_prot_reg)
-                slave->mtd.write_user_prot_reg = part_write_user_prot_reg;
-        if (master->lock_user_prot_reg)
-                slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg;
-        if (master->get_user_prot_info)
-                slave->mtd.get_user_prot_info = part_get_user_prot_info;
-        if (master->get_fact_prot_info)
-                slave->mtd.get_fact_prot_info = part_get_fact_prot_info;
-        if (master->sync)
-                slave->mtd.sync = part_sync;
-        if (!partno && !master->dev.class && master->suspend && master->resume) {
-                        slave->mtd.suspend = part_suspend;
-                        slave->mtd.resume = part_resume;
+        if (master->_get_unmapped_area)
+                slave->mtd._get_unmapped_area = part_get_unmapped_area;
+        if (master->_read_oob)
+                slave->mtd._read_oob = part_read_oob;
+        if (master->_write_oob)
+                slave->mtd._write_oob = part_write_oob;
+        if (master->_read_user_prot_reg)
+                slave->mtd._read_user_prot_reg = part_read_user_prot_reg;
+        if (master->_read_fact_prot_reg)
+                slave->mtd._read_fact_prot_reg = part_read_fact_prot_reg;
+        if (master->_write_user_prot_reg)
+                slave->mtd._write_user_prot_reg = part_write_user_prot_reg;
+        if (master->_lock_user_prot_reg)
+                slave->mtd._lock_user_prot_reg = part_lock_user_prot_reg;
+        if (master->_get_user_prot_info)
+                slave->mtd._get_user_prot_info = part_get_user_prot_info;
+        if (master->_get_fact_prot_info)
+                slave->mtd._get_fact_prot_info = part_get_fact_prot_info;
+        if (master->_sync)
+                slave->mtd._sync = part_sync;
+        if (!partno && !master->dev.class && master->_suspend &&
+            master->_resume) {
+                        slave->mtd._suspend = part_suspend;
+                        slave->mtd._resume = part_resume;
         }
-        if (master->writev)
-                slave->mtd.writev = part_writev;
-        if (master->lock)
-                slave->mtd.lock = part_lock;
-        if (master->unlock)
-                slave->mtd.unlock = part_unlock;
-        if (master->is_locked)
-                slave->mtd.is_locked = part_is_locked;
-        if (master->block_isbad)
-                slave->mtd.block_isbad = part_block_isbad;
-        if (master->block_markbad)
-                slave->mtd.block_markbad = part_block_markbad;
-        slave->mtd.erase = part_erase;
+        if (master->_writev)
+                slave->mtd._writev = part_writev;
+        if (master->_lock)
+                slave->mtd._lock = part_lock;
+        if (master->_unlock)
+                slave->mtd._unlock = part_unlock;
+        if (master->_is_locked)
+                slave->mtd._is_locked = part_is_locked;
+        if (master->_block_isbad)
+                slave->mtd._block_isbad = part_block_isbad;
+        if (master->_block_markbad)
+                slave->mtd._block_markbad = part_block_markbad;
+        slave->mtd._erase = part_erase;
         slave->master = master;
         slave->offset = part->offset;
 
@@ -549,7 +516,8 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
         }
 
         slave->mtd.ecclayout = master->ecclayout;
-        if (master->block_isbad) {
+        slave->mtd.ecc_strength = master->ecc_strength;
+        if (master->_block_isbad) {
                 uint64_t offs = 0;
 
                 while (offs < slave->mtd.size) {
@@ -761,7 +729,7 @@ int parse_mtd_partitions(struct mtd_info *master, const char **types,
         for ( ; ret <= 0 && *types; types++) {
                 parser = get_partition_parser(*types);
                 if (!parser && !request_module("%s", *types))
-                                parser = get_partition_parser(*types);
+                        parser = get_partition_parser(*types);
                 if (!parser)
                         continue;
                 ret = (*parser->parse_fn)(master, pparts, data);
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index a3c4de551ebe..7d17cecad69d 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -314,6 +314,26 @@ config MTD_NAND_DISKONCHIP_BBTWRITE
           load time (assuming you build diskonchip as a module) with the module
           parameter "inftl_bbt_write=1".
 
+config MTD_NAND_DOCG4
+        tristate "Support for DiskOnChip G4 (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        select BCH
+        select BITREVERSE
+        help
+          Support for diskonchip G4 nand flash, found in various smartphones and
+          PDAs, among them the Palm Treo680, HTC Prophet and Wizard, Toshiba
+          Portege G900, Asus P526, and O2 XDA Zinc.
+
+          With this driver you will be able to use UBI and create a ubifs on the
+          device, so you may wish to consider enabling UBI and UBIFS as well.
+
+          These devices ship with the Mys/Sandisk SAFTL formatting, for which
+          there is currently no mtd parser, so you may want to use command line
+          partitioning to segregate write-protected blocks. On the Treo680, the
+          first five erase blocks (256KiB each) are write-protected, followed
+          by the block containing the saftl partition table.  This is probably
+          typical.
+
 config MTD_NAND_SHARPSL
         tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
         depends on ARCH_PXA
@@ -421,7 +441,6 @@ config MTD_NAND_NANDSIM
 config MTD_NAND_GPMI_NAND
         bool "GPMI NAND Flash Controller driver"
         depends on MTD_NAND && (SOC_IMX23 || SOC_IMX28)
-        select MTD_CMDLINE_PARTS
         help
          Enables NAND Flash support for IMX23 or IMX28.
          The GPMI controller is very powerful, with the help of BCH
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 19bc8cb1d187..d4b4d8739bd8 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_MTD_NAND_PPCHAMELEONEVB)	+= ppchameleonevb.o
 obj-$(CONFIG_MTD_NAND_S3C2410)          += s3c2410.o
 obj-$(CONFIG_MTD_NAND_DAVINCI)          += davinci_nand.o
 obj-$(CONFIG_MTD_NAND_DISKONCHIP)       += diskonchip.o
+obj-$(CONFIG_MTD_NAND_DOCG4)            += docg4.o
 obj-$(CONFIG_MTD_NAND_FSMC)             += fsmc_nand.o
 obj-$(CONFIG_MTD_NAND_H1900)            += h1910.o
 obj-$(CONFIG_MTD_NAND_RTC_FROM4)        += rtc_from4.o
diff --git a/drivers/mtd/nand/alauda.c b/drivers/mtd/nand/alauda.c
index 6a5ff64a139e..4f20e1d8bef1 100644
--- a/drivers/mtd/nand/alauda.c
+++ b/drivers/mtd/nand/alauda.c
@@ -585,12 +585,13 @@ static int alauda_init_media(struct alauda *al)
         mtd->writesize = 1<<card->pageshift;
         mtd->type = MTD_NANDFLASH;
         mtd->flags = MTD_CAP_NANDFLASH;
-        mtd->read = alauda_read;
-        mtd->write = alauda_write;
-        mtd->erase = alauda_erase;
-        mtd->block_isbad = alauda_isbad;
+        mtd->_read = alauda_read;
+        mtd->_write = alauda_write;
+        mtd->_erase = alauda_erase;
+        mtd->_block_isbad = alauda_isbad;
         mtd->priv = al;
         mtd->owner = THIS_MODULE;
+        mtd->ecc_strength = 1;
 
         err = mtd_device_register(mtd, NULL, 0);
         if (err) {
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index ae7e37d9ac17..2165576a1c67 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -603,6 +603,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
                 nand_chip->ecc.hwctl = atmel_nand_hwctl;
                 nand_chip->ecc.read_page = atmel_nand_read_page;
                 nand_chip->ecc.bytes = 4;
+                nand_chip->ecc.strength = 1;
         }
 
         nand_chip->chip_delay = 20;             /* 20us command delay time */
diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c
index 64c9cbaf86a1..6908cdde3065 100644
--- a/drivers/mtd/nand/bcm_umi_nand.c
+++ b/drivers/mtd/nand/bcm_umi_nand.c
@@ -475,6 +475,14 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev)
                         largepage_bbt.options = NAND_BBT_SCAN2NDPAGE;
                 this->badblock_pattern = &largepage_bbt;
         }
+
+        /*
+         * FIXME: ecc strength value of 6 bits per 512 bytes of data is a
+         * conservative guess, given 13 ecc bytes and using bch alg.
+         * (Assume Galois field order m=15 to allow a margin of error.)
+         */
+        this->ecc.strength = 6;
+
 #endif
 
         /* Now finish off the scan, now that ecc.layout has been initialized. */
@@ -487,7 +495,7 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev)
 
         /* Register the partitions */
         board_mtd->name = "bcm_umi-nand";
-        mtd_device_parse_register(board_mtd, NULL, 0, NULL, 0);
+        mtd_device_parse_register(board_mtd, NULL, NULL, NULL, 0);
 
         /* Return happy */
         return 0;
diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c
index dd899cb5d366..d7b86b925de5 100644
--- a/drivers/mtd/nand/bf5xx_nand.c
+++ b/drivers/mtd/nand/bf5xx_nand.c
@@ -702,9 +702,11 @@ static int bf5xx_nand_scan(struct mtd_info *mtd)
                 if (likely(mtd->writesize >= 512)) {
                         chip->ecc.size = 512;
                         chip->ecc.bytes = 6;
+                        chip->ecc.strength = 2;
                 } else {
                         chip->ecc.size = 256;
                         chip->ecc.bytes = 3;
+                        chip->ecc.strength = 1;
                         bfin_write_NFC_CTL(bfin_read_NFC_CTL() & ~(1 << NFC_PG_SIZE_OFFSET));
                         SSYNC();
                 }
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c
index 72d3f23490c5..2a96e1a12062 100644
--- a/drivers/mtd/nand/cafe_nand.c
+++ b/drivers/mtd/nand/cafe_nand.c
@@ -783,6 +783,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
         cafe->nand.ecc.mode = NAND_ECC_HW_SYNDROME;
         cafe->nand.ecc.size = mtd->writesize;
         cafe->nand.ecc.bytes = 14;
+        cafe->nand.ecc.strength = 4;
         cafe->nand.ecc.hwctl  = (void *)cafe_nand_bug;
         cafe->nand.ecc.calculate = (void *)cafe_nand_bug;
         cafe->nand.ecc.correct  = (void *)cafe_nand_bug;
@@ -799,7 +800,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
         pci_set_drvdata(pdev, mtd);
 
         mtd->name = "cafe_nand";
-        mtd_device_parse_register(mtd, part_probes, 0, NULL, 0);
+        mtd_device_parse_register(mtd, part_probes, NULL, NULL, 0);
 
         goto out;
 
diff --git a/drivers/mtd/nand/cmx270_nand.c b/drivers/mtd/nand/cmx270_nand.c
index 737ef9a04fdb..1024bfc05c86 100644
--- a/drivers/mtd/nand/cmx270_nand.c
+++ b/drivers/mtd/nand/cmx270_nand.c
@@ -219,7 +219,7 @@ static int __init cmx270_init(void)
         }
 
         /* Register the partitions */
-        ret = mtd_device_parse_register(cmx270_nand_mtd, NULL, 0,
+        ret = mtd_device_parse_register(cmx270_nand_mtd, NULL, NULL,
                                         partition_info, NUM_PARTITIONS);
         if (ret)
                 goto err_scan;
diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c
index 414afa793563..821c34c62500 100644
--- a/drivers/mtd/nand/cs553x_nand.c
+++ b/drivers/mtd/nand/cs553x_nand.c
@@ -248,6 +248,8 @@ static int __init cs553x_init_one(int cs, int mmio, unsigned long adr)
                 goto out_ior;
         }
 
+        this->ecc.strength = 1;
+
         new_mtd->name = kasprintf(GFP_KERNEL, "cs553x_nand_cs%d", cs);
 
         cs553x_mtd[cs] = new_mtd;
@@ -313,7 +315,7 @@ static int __init cs553x_init(void)
         for (i = 0; i < NR_CS553X_CONTROLLERS; i++) {
                 if (cs553x_mtd[i]) {
                         /* If any devices registered, return success. Else the last error. */
-                        mtd_device_parse_register(cs553x_mtd[i], NULL, 0,
+                        mtd_device_parse_register(cs553x_mtd[i], NULL, NULL,
                                                   NULL, 0);
                         err = 0;
                 }
diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
index 6e566156956f..d94b03c207af 100644
--- a/drivers/mtd/nand/davinci_nand.c
+++ b/drivers/mtd/nand/davinci_nand.c
@@ -641,6 +641,7 @@ static int __init nand_davinci_probe(struct platform_device *pdev)
                         info->chip.ecc.bytes = 3;
                 }
                 info->chip.ecc.size = 512;
+                info->chip.ecc.strength = pdata->ecc_bits;
                 break;
         default:
                 ret = -EINVAL;
@@ -752,8 +753,8 @@ syndrome_done:
         if (ret < 0)
                 goto err_scan;
 
-        ret = mtd_device_parse_register(&info->mtd, NULL, 0,
-                        pdata->parts, pdata->nr_parts);
+        ret = mtd_device_parse_register(&info->mtd, NULL, NULL, pdata->parts,
+                                        pdata->nr_parts);
 
         if (ret < 0)
                 goto err_scan;
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index 3984d488f9ab..a9e57d686297 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -1590,6 +1590,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
                         ECC_15BITS * (denali->mtd.writesize /
                         ECC_SECTOR_SIZE)))) {
                 /* if MLC OOB size is large enough, use 15bit ECC*/
+                denali->nand.ecc.strength = 15;
                 denali->nand.ecc.layout = &nand_15bit_oob;
                 denali->nand.ecc.bytes = ECC_15BITS;
                 iowrite32(15, denali->flash_reg + ECC_CORRECTION);
@@ -1600,12 +1601,14 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
                                 " contain 8bit ECC correction codes");
                 goto failed_req_irq;
         } else {
+                denali->nand.ecc.strength = 8;
                 denali->nand.ecc.layout = &nand_8bit_oob;
                 denali->nand.ecc.bytes = ECC_8BITS;
                 iowrite32(8, denali->flash_reg + ECC_CORRECTION);
         }
 
         denali->nand.ecc.bytes *= denali->devnum;
+        denali->nand.ecc.strength *= denali->devnum;
         denali->nand.ecc.layout->eccbytes *=
                 denali->mtd.writesize / ECC_SECTOR_SIZE;
         denali->nand.ecc.layout->oobfree[0].offset =
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index df921e7a496c..e2ca067631cf 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -1653,6 +1653,7 @@ static int __init doc_probe(unsigned long physadr)
         nand->ecc.mode          = NAND_ECC_HW_SYNDROME;
         nand->ecc.size          = 512;
         nand->ecc.bytes         = 6;
+        nand->ecc.strength      = 2;
         nand->bbt_options       = NAND_BBT_USE_FLASH;
 
         doc->physadr            = physadr;
diff --git a/drivers/mtd/nand/docg4.c b/drivers/mtd/nand/docg4.c
new file mode 100644
index 000000000000..b08202664543
--- /dev/null
+++ b/drivers/mtd/nand/docg4.c
@@ -0,0 +1,1377 @@
+/*
+ *  Copyright © 2012 Mike Dunn <mikedunn@newsguy.com>
+ *
+ * mtd nand driver for M-Systems DiskOnChip G4
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Tested on the Palm Treo 680.  The G4 is also present on Toshiba Portege, Asus
+ * P526, some HTC smartphones (Wizard, Prophet, ...), O2 XDA Zinc, maybe others.
+ * Should work on these as well.  Let me know!
+ *
+ * TODO:
+ *
+ *  Mechanism for management of password-protected areas
+ *
+ *  Hamming ecc when reading oob only
+ *
+ *  According to the M-Sys documentation, this device is also available in a
+ *  "dual-die" configuration having a 256MB capacity, but no mechanism for
+ *  detecting this variant is documented.  Currently this driver assumes 128MB
+ *  capacity.
+ *
+ *  Support for multiple cascaded devices ("floors").  Not sure which gadgets
+ *  contain multiple G4s in a cascaded configuration, if any.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/bitops.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/bch.h>
+#include <linux/bitrev.h>
+
+/*
+ * You'll want to ignore badblocks if you're reading a partition that contains
+ * data written by the TrueFFS library (i.e., by PalmOS, Windows, etc), since
+ * it does not use mtd nand's method for marking bad blocks (using oob area).
+ * This will also skip the check of the "page written" flag.
+ */
+static bool ignore_badblocks;
+module_param(ignore_badblocks, bool, 0);
+MODULE_PARM_DESC(ignore_badblocks, "no badblock checking performed");
+
+struct docg4_priv {
+        struct mtd_info *mtd;
+        struct device *dev;
+        void __iomem *virtadr;
+        int status;
+        struct {
+                unsigned int command;
+                int column;
+                int page;
+        } last_command;
+        uint8_t oob_buf[16];
+        uint8_t ecc_buf[7];
+        int oob_page;
+        struct bch_control *bch;
+};
+
+/*
+ * Defines prefixed with DOCG4 are unique to the diskonchip G4.  All others are
+ * shared with other diskonchip devices (P3, G3 at least).
+ *
+ * Functions with names prefixed with docg4_ are mtd / nand interface functions
+ * (though they may also be called internally).  All others are internal.
+ */
+
+#define DOC_IOSPACE_DATA                0x0800
+
+/* register offsets */
+#define DOC_CHIPID                      0x1000
+#define DOC_DEVICESELECT                0x100a
+#define DOC_ASICMODE                    0x100c
+#define DOC_DATAEND                     0x101e
+#define DOC_NOP                         0x103e
+
+#define DOC_FLASHSEQUENCE               0x1032
+#define DOC_FLASHCOMMAND                0x1034
+#define DOC_FLASHADDRESS                0x1036
+#define DOC_FLASHCONTROL                0x1038
+#define DOC_ECCCONF0                    0x1040
+#define DOC_ECCCONF1                    0x1042
+#define DOC_HAMMINGPARITY               0x1046
+#define DOC_BCH_SYNDROM(idx)            (0x1048 + idx)
+
+#define DOC_ASICMODECONFIRM             0x1072
+#define DOC_CHIPID_INV                  0x1074
+#define DOC_POWERMODE                   0x107c
+
+#define DOCG4_MYSTERY_REG               0x1050
+
+/* apparently used only to write oob bytes 6 and 7 */
+#define DOCG4_OOB_6_7                   0x1052
+
+/* DOC_FLASHSEQUENCE register commands */
+#define DOC_SEQ_RESET                   0x00
+#define DOCG4_SEQ_PAGE_READ             0x03
+#define DOCG4_SEQ_FLUSH                 0x29
+#define DOCG4_SEQ_PAGEWRITE             0x16
+#define DOCG4_SEQ_PAGEPROG              0x1e
+#define DOCG4_SEQ_BLOCKERASE            0x24
+
+/* DOC_FLASHCOMMAND register commands */
+#define DOCG4_CMD_PAGE_READ             0x00
+#define DOC_CMD_ERASECYCLE2             0xd0
+#define DOCG4_CMD_FLUSH                 0x70
+#define DOCG4_CMD_READ2                 0x30
+#define DOC_CMD_PROG_BLOCK_ADDR         0x60
+#define DOCG4_CMD_PAGEWRITE             0x80
+#define DOC_CMD_PROG_CYCLE2             0x10
+#define DOC_CMD_RESET                   0xff
+
+/* DOC_POWERMODE register bits */
+#define DOC_POWERDOWN_READY             0x80
+
+/* DOC_FLASHCONTROL register bits */
+#define DOC_CTRL_CE                     0x10
+#define DOC_CTRL_UNKNOWN                0x40
+#define DOC_CTRL_FLASHREADY             0x01
+
+/* DOC_ECCCONF0 register bits */
+#define DOC_ECCCONF0_READ_MODE          0x8000
+#define DOC_ECCCONF0_UNKNOWN            0x2000
+#define DOC_ECCCONF0_ECC_ENABLE         0x1000
+#define DOC_ECCCONF0_DATA_BYTES_MASK    0x07ff
+
+/* DOC_ECCCONF1 register bits */
+#define DOC_ECCCONF1_BCH_SYNDROM_ERR    0x80
+#define DOC_ECCCONF1_ECC_ENABLE         0x07
+#define DOC_ECCCONF1_PAGE_IS_WRITTEN    0x20
+
+/* DOC_ASICMODE register bits */
+#define DOC_ASICMODE_RESET              0x00
+#define DOC_ASICMODE_NORMAL             0x01
+#define DOC_ASICMODE_POWERDOWN          0x02
+#define DOC_ASICMODE_MDWREN             0x04
+#define DOC_ASICMODE_BDETCT_RESET       0x08
+#define DOC_ASICMODE_RSTIN_RESET        0x10
+#define DOC_ASICMODE_RAM_WE             0x20
+
+/* good status values read after read/write/erase operations */
+#define DOCG4_PROGSTATUS_GOOD          0x51
+#define DOCG4_PROGSTATUS_GOOD_2        0xe0
+
+/*
+ * On read operations (page and oob-only), the first byte read from I/O reg is a
+ * status.  On error, it reads 0x73; otherwise, it reads either 0x71 (first read
+ * after reset only) or 0x51, so bit 1 is presumed to be an error indicator.
+ */
+#define DOCG4_READ_ERROR           0x02 /* bit 1 indicates read error */
+
+/* anatomy of the device */
+#define DOCG4_CHIP_SIZE        0x8000000
+#define DOCG4_PAGE_SIZE        0x200
+#define DOCG4_PAGES_PER_BLOCK  0x200
+#define DOCG4_BLOCK_SIZE       (DOCG4_PAGES_PER_BLOCK * DOCG4_PAGE_SIZE)
+#define DOCG4_NUMBLOCKS        (DOCG4_CHIP_SIZE / DOCG4_BLOCK_SIZE)
+#define DOCG4_OOB_SIZE         0x10
+#define DOCG4_CHIP_SHIFT       27    /* log_2(DOCG4_CHIP_SIZE) */
+#define DOCG4_PAGE_SHIFT       9     /* log_2(DOCG4_PAGE_SIZE) */
+#define DOCG4_ERASE_SHIFT      18    /* log_2(DOCG4_BLOCK_SIZE) */
+
+/* all but the last byte is included in ecc calculation */
+#define DOCG4_BCH_SIZE         (DOCG4_PAGE_SIZE + DOCG4_OOB_SIZE - 1)
+
+#define DOCG4_USERDATA_LEN     520 /* 512 byte page plus 8 oob avail to user */
+
+/* expected values from the ID registers */
+#define DOCG4_IDREG1_VALUE     0x0400
+#define DOCG4_IDREG2_VALUE     0xfbff
+
+/* primitive polynomial used to build the Galois field used by hw ecc gen */
+#define DOCG4_PRIMITIVE_POLY   0x4443
+
+#define DOCG4_M                14  /* Galois field is of order 2^14 */
+#define DOCG4_T                4   /* BCH alg corrects up to 4 bit errors */
+
+#define DOCG4_FACTORY_BBT_PAGE 16 /* page where read-only factory bbt lives */
+
+/*
+ * Oob bytes 0 - 6 are available to the user.
+ * Byte 7 is hamming ecc for first 7 bytes.  Bytes 8 - 14 are hw-generated ecc.
+ * Byte 15 (the last) is used by the driver as a "page written" flag.
+ */
+static struct nand_ecclayout docg4_oobinfo = {
+        .eccbytes = 9,
+        .eccpos = {7, 8, 9, 10, 11, 12, 13, 14, 15},
+        .oobavail = 7,
+        .oobfree = { {0, 7} }
+};
+
+/*
+ * The device has a nop register which M-Sys claims is for the purpose of
+ * inserting precise delays.  But beware; at least some operations fail if the
+ * nop writes are replaced with a generic delay!
+ */
+static inline void write_nop(void __iomem *docptr)
+{
+        writew(0, docptr + DOC_NOP);
+}
+
+static void docg4_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+        int i;
+        struct nand_chip *nand = mtd->priv;
+        uint16_t *p = (uint16_t *) buf;
+        len >>= 1;
+
+        for (i = 0; i < len; i++)
+                p[i] = readw(nand->IO_ADDR_R);
+}
+
+static void docg4_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
+{
+        int i;
+        struct nand_chip *nand = mtd->priv;
+        uint16_t *p = (uint16_t *) buf;
+        len >>= 1;
+
+        for (i = 0; i < len; i++)
+                writew(p[i], nand->IO_ADDR_W);
+}
+
+static int poll_status(struct docg4_priv *doc)
+{
+        /*
+         * Busy-wait for the FLASHREADY bit to be set in the FLASHCONTROL
+         * register.  Operations known to take a long time (e.g., block erase)
+         * should sleep for a while before calling this.
+         */
+
+        uint16_t flash_status;
+        unsigned int timeo;
+        void __iomem *docptr = doc->virtadr;
+
+        dev_dbg(doc->dev, "%s...\n", __func__);
+
+        /* hardware quirk requires reading twice initially */
+        flash_status = readw(docptr + DOC_FLASHCONTROL);
+
+        timeo = 1000;
+        do {
+                cpu_relax();
+                flash_status = readb(docptr + DOC_FLASHCONTROL);
+        } while (!(flash_status & DOC_CTRL_FLASHREADY) && --timeo);
+
+
+        if (!timeo) {
+                dev_err(doc->dev, "%s: timed out!\n", __func__);
+                return NAND_STATUS_FAIL;
+        }
+
+        if (unlikely(timeo < 50))
+                dev_warn(doc->dev, "%s: nearly timed out; %d remaining\n",
+                         __func__, timeo);
+
+        return 0;
+}
+
+
+static int docg4_wait(struct mtd_info *mtd, struct nand_chip *nand)
+{
+
+        struct docg4_priv *doc = nand->priv;
+        int status = NAND_STATUS_WP;       /* inverse logic?? */
+        dev_dbg(doc->dev, "%s...\n", __func__);
+
+        /* report any previously unreported error */
+        if (doc->status) {
+                status |= doc->status;
+                doc->status = 0;
+                return status;
+        }
+
+        status |= poll_status(doc);
+        return status;
+}
+
+static void docg4_select_chip(struct mtd_info *mtd, int chip)
+{
+        /*
+         * Select among multiple cascaded chips ("floors").  Multiple floors are
+         * not yet supported, so the only valid non-negative value is 0.
+         */
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+
+        dev_dbg(doc->dev, "%s: chip %d\n", __func__, chip);
+
+        if (chip < 0)
+                return;         /* deselected */
+
+        if (chip > 0)
+                dev_warn(doc->dev, "multiple floors currently unsupported\n");
+
+        writew(0, docptr + DOC_DEVICESELECT);
+}
+
+static void reset(struct mtd_info *mtd)
+{
+        /* full device reset */
+
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+
+        writew(DOC_ASICMODE_RESET | DOC_ASICMODE_MDWREN,
+               docptr + DOC_ASICMODE);
+        writew(~(DOC_ASICMODE_RESET | DOC_ASICMODE_MDWREN),
+               docptr + DOC_ASICMODECONFIRM);
+        write_nop(docptr);
+
+        writew(DOC_ASICMODE_NORMAL | DOC_ASICMODE_MDWREN,
+               docptr + DOC_ASICMODE);
+        writew(~(DOC_ASICMODE_NORMAL | DOC_ASICMODE_MDWREN),
+               docptr + DOC_ASICMODECONFIRM);
+
+        writew(DOC_ECCCONF1_ECC_ENABLE, docptr + DOC_ECCCONF1);
+
+        poll_status(doc);
+}
+
+static void read_hw_ecc(void __iomem *docptr, uint8_t *ecc_buf)
+{
+        /* read the 7 hw-generated ecc bytes */
+
+        int i;
+        for (i = 0; i < 7; i++) { /* hw quirk; read twice */
+                ecc_buf[i] = readb(docptr + DOC_BCH_SYNDROM(i));
+                ecc_buf[i] = readb(docptr + DOC_BCH_SYNDROM(i));
+        }
+}
+
+static int correct_data(struct mtd_info *mtd, uint8_t *buf, int page)
+{
+        /*
+         * Called after a page read when hardware reports bitflips.
+         * Up to four bitflips can be corrected.
+         */
+
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+        int i, numerrs, errpos[4];
+        const uint8_t blank_read_hwecc[8] = {
+                0xcf, 0x72, 0xfc, 0x1b, 0xa9, 0xc7, 0xb9, 0 };
+
+        read_hw_ecc(docptr, doc->ecc_buf); /* read 7 hw-generated ecc bytes */
+
+        /* check if read error is due to a blank page */
+        if (!memcmp(doc->ecc_buf, blank_read_hwecc, 7))
+                return 0;       /* yes */
+
+        /* skip additional check of "written flag" if ignore_badblocks */
+        if (ignore_badblocks == false) {
+
+                /*
+                 * If the hw ecc bytes are not those of a blank page, there's
+                 * still a chance that the page is blank, but was read with
+                 * errors.  Check the "written flag" in last oob byte, which
+                 * is set to zero when a page is written.  If more than half
+                 * the bits are set, assume a blank page.  Unfortunately, the
+                 * bit flips(s) are not reported in stats.
+                 */
+
+                if (doc->oob_buf[15]) {
+                        int bit, numsetbits = 0;
+                        unsigned long written_flag = doc->oob_buf[15];
+                        for_each_set_bit(bit, &written_flag, 8)
+                                numsetbits++;
+                        if (numsetbits > 4) { /* assume blank */
+                                dev_warn(doc->dev,
+                                         "error(s) in blank page "
+                                         "at offset %08x\n",
+                                         page * DOCG4_PAGE_SIZE);
+                                return 0;
+                        }
+                }
+        }
+
+        /*
+         * The hardware ecc unit produces oob_ecc ^ calc_ecc.  The kernel's bch
+         * algorithm is used to decode this.  However the hw operates on page
+         * data in a bit order that is the reverse of that of the bch alg,
+         * requiring that the bits be reversed on the result.  Thanks to Ivan
+         * Djelic for his analysis!
+         */
+        for (i = 0; i < 7; i++)
+                doc->ecc_buf[i] = bitrev8(doc->ecc_buf[i]);
+
+        numerrs = decode_bch(doc->bch, NULL, DOCG4_USERDATA_LEN, NULL,
+                             doc->ecc_buf, NULL, errpos);
+
+        if (numerrs == -EBADMSG) {
+                dev_warn(doc->dev, "uncorrectable errors at offset %08x\n",
+                         page * DOCG4_PAGE_SIZE);
+                return -EBADMSG;
+        }
+
+        BUG_ON(numerrs < 0);    /* -EINVAL, or anything other than -EBADMSG */
+
+        /* undo last step in BCH alg (modulo mirroring not needed) */
+        for (i = 0; i < numerrs; i++)
+                errpos[i] = (errpos[i] & ~7)|(7-(errpos[i] & 7));
+
+        /* fix the errors */
+        for (i = 0; i < numerrs; i++) {
+
+                /* ignore if error within oob ecc bytes */
+                if (errpos[i] > DOCG4_USERDATA_LEN * 8)
+                        continue;
+
+                /* if error within oob area preceeding ecc bytes... */
+                if (errpos[i] > DOCG4_PAGE_SIZE * 8)
+                        change_bit(errpos[i] - DOCG4_PAGE_SIZE * 8,
+                                   (unsigned long *)doc->oob_buf);
+
+                else    /* error in page data */
+                        change_bit(errpos[i], (unsigned long *)buf);
+        }
+
+        dev_notice(doc->dev, "%d error(s) corrected at offset %08x\n",
+                   numerrs, page * DOCG4_PAGE_SIZE);
+
+        return numerrs;
+}
+
+static uint8_t docg4_read_byte(struct mtd_info *mtd)
+{
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+
+        dev_dbg(doc->dev, "%s\n", __func__);
+
+        if (doc->last_command.command == NAND_CMD_STATUS) {
+                int status;
+
+                /*
+                 * Previous nand command was status request, so nand
+                 * infrastructure code expects to read the status here.  If an
+                 * error occurred in a previous operation, report it.
+                 */
+                doc->last_command.command = 0;
+
+                if (doc->status) {
+                        status = doc->status;
+                        doc->status = 0;
+                }
+
+                /* why is NAND_STATUS_WP inverse logic?? */
+                else
+                        status = NAND_STATUS_WP | NAND_STATUS_READY;
+
+                return status;
+        }
+
+        dev_warn(doc->dev, "unexpectd call to read_byte()\n");
+
+        return 0;
+}
+
+static void write_addr(struct docg4_priv *doc, uint32_t docg4_addr)
+{
+        /* write the four address bytes packed in docg4_addr to the device */
+
+        void __iomem *docptr = doc->virtadr;
+        writeb(docg4_addr & 0xff, docptr + DOC_FLASHADDRESS);
+        docg4_addr >>= 8;
+        writeb(docg4_addr & 0xff, docptr + DOC_FLASHADDRESS);
+        docg4_addr >>= 8;
+        writeb(docg4_addr & 0xff, docptr + DOC_FLASHADDRESS);
+        docg4_addr >>= 8;
+        writeb(docg4_addr & 0xff, docptr + DOC_FLASHADDRESS);
+}
+
+static int read_progstatus(struct docg4_priv *doc)
+{
+        /*
+         * This apparently checks the status of programming.  Done after an
+         * erasure, and after page data is written.  On error, the status is
+         * saved, to be later retrieved by the nand infrastructure code.
+         */
+        void __iomem *docptr = doc->virtadr;
+
+        /* status is read from the I/O reg */
+        uint16_t status1 = readw(docptr + DOC_IOSPACE_DATA);
+        uint16_t status2 = readw(docptr + DOC_IOSPACE_DATA);
+        uint16_t status3 = readw(docptr + DOCG4_MYSTERY_REG);
+
+        dev_dbg(doc->dev, "docg4: %s: %02x %02x %02x\n",
+              __func__, status1, status2, status3);
+
+        if (status1 != DOCG4_PROGSTATUS_GOOD
+            || status2 != DOCG4_PROGSTATUS_GOOD_2
+            || status3 != DOCG4_PROGSTATUS_GOOD_2) {
+                doc->status = NAND_STATUS_FAIL;
+                dev_warn(doc->dev, "read_progstatus failed: "
+                         "%02x, %02x, %02x\n", status1, status2, status3);
+                return -EIO;
+        }
+        return 0;
+}
+
+static int pageprog(struct mtd_info *mtd)
+{
+        /*
+         * Final step in writing a page.  Writes the contents of its
+         * internal buffer out to the flash array, or some such.
+         */
+
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+        int retval = 0;
+
+        dev_dbg(doc->dev, "docg4: %s\n", __func__);
+
+        writew(DOCG4_SEQ_PAGEPROG, docptr + DOC_FLASHSEQUENCE);
+        writew(DOC_CMD_PROG_CYCLE2, docptr + DOC_FLASHCOMMAND);
+        write_nop(docptr);
+        write_nop(docptr);
+
+        /* Just busy-wait; usleep_range() slows things down noticeably. */
+        poll_status(doc);
+
+        writew(DOCG4_SEQ_FLUSH, docptr + DOC_FLASHSEQUENCE);
+        writew(DOCG4_CMD_FLUSH, docptr + DOC_FLASHCOMMAND);
+        writew(DOC_ECCCONF0_READ_MODE | 4, docptr + DOC_ECCCONF0);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+
+        retval = read_progstatus(doc);
+        writew(0, docptr + DOC_DATAEND);
+        write_nop(docptr);
+        poll_status(doc);
+        write_nop(docptr);
+
+        return retval;
+}
+
+static void sequence_reset(struct mtd_info *mtd)
+{
+        /* common starting sequence for all operations */
+
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+
+        writew(DOC_CTRL_UNKNOWN | DOC_CTRL_CE, docptr + DOC_FLASHCONTROL);
+        writew(DOC_SEQ_RESET, docptr + DOC_FLASHSEQUENCE);
+        writew(DOC_CMD_RESET, docptr + DOC_FLASHCOMMAND);
+        write_nop(docptr);
+        write_nop(docptr);
+        poll_status(doc);
+        write_nop(docptr);
+}
+
+static void read_page_prologue(struct mtd_info *mtd, uint32_t docg4_addr)
+{
+        /* first step in reading a page */
+
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+
+        dev_dbg(doc->dev,
+              "docg4: %s: g4 page %08x\n", __func__, docg4_addr);
+
+        sequence_reset(mtd);
+
+        writew(DOCG4_SEQ_PAGE_READ, docptr + DOC_FLASHSEQUENCE);
+        writew(DOCG4_CMD_PAGE_READ, docptr + DOC_FLASHCOMMAND);
+        write_nop(docptr);
+
+        write_addr(doc, docg4_addr);
+
+        write_nop(docptr);
+        writew(DOCG4_CMD_READ2, docptr + DOC_FLASHCOMMAND);
+        write_nop(docptr);
+        write_nop(docptr);
+
+        poll_status(doc);
+}
+
+static void write_page_prologue(struct mtd_info *mtd, uint32_t docg4_addr)
+{
+        /* first step in writing a page */
+
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+
+        dev_dbg(doc->dev,
+              "docg4: %s: g4 addr: %x\n", __func__, docg4_addr);
+        sequence_reset(mtd);
+        writew(DOCG4_SEQ_PAGEWRITE, docptr + DOC_FLASHSEQUENCE);
+        writew(DOCG4_CMD_PAGEWRITE, docptr + DOC_FLASHCOMMAND);
+        write_nop(docptr);
+        write_addr(doc, docg4_addr);
+        write_nop(docptr);
+        write_nop(docptr);
+        poll_status(doc);
+}
+
+static uint32_t mtd_to_docg4_address(int page, int column)
+{
+        /*
+         * Convert mtd address to format used by the device, 32 bit packed.
+         *
+         * Some notes on G4 addressing... The M-Sys documentation on this device
+         * claims that pages are 2K in length, and indeed, the format of the
+         * address used by the device reflects that.  But within each page are
+         * four 512 byte "sub-pages", each with its own oob data that is
+         * read/written immediately after the 512 bytes of page data.  This oob
+         * data contains the ecc bytes for the preceeding 512 bytes.
+         *
+         * Rather than tell the mtd nand infrastructure that page size is 2k,
+         * with four sub-pages each, we engage in a little subterfuge and tell
+         * the infrastructure code that pages are 512 bytes in size.  This is
+         * done because during the course of reverse-engineering the device, I
+         * never observed an instance where an entire 2K "page" was read or
+         * written as a unit.  Each "sub-page" is always addressed individually,
+         * its data read/written, and ecc handled before the next "sub-page" is
+         * addressed.
+         *
+         * This requires us to convert addresses passed by the mtd nand
+         * infrastructure code to those used by the device.
+         *
+         * The address that is written to the device consists of four bytes: the
+         * first two are the 2k page number, and the second is the index into
+         * the page.  The index is in terms of 16-bit half-words and includes
+         * the preceeding oob data, so e.g., the index into the second
+         * "sub-page" is 0x108, and the full device address of the start of mtd
+         * page 0x201 is 0x00800108.
+         */
+        int g4_page = page / 4;                       /* device's 2K page */
+        int g4_index = (page % 4) * 0x108 + column/2; /* offset into page */
+        return (g4_page << 16) | g4_index;            /* pack */
+}
+
+static void docg4_command(struct mtd_info *mtd, unsigned command, int column,
+                          int page_addr)
+{
+        /* handle standard nand commands */
+
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        uint32_t g4_addr = mtd_to_docg4_address(page_addr, column);
+
+        dev_dbg(doc->dev, "%s %x, page_addr=%x, column=%x\n",
+              __func__, command, page_addr, column);
+
+        /*
+         * Save the command and its arguments.  This enables emulation of
+         * standard flash devices, and also some optimizations.
+         */
+        doc->last_command.command = command;
+        doc->last_command.column = column;
+        doc->last_command.page = page_addr;
+
+        switch (command) {
+
+        case NAND_CMD_RESET:
+                reset(mtd);
+                break;
+
+        case NAND_CMD_READ0:
+                read_page_prologue(mtd, g4_addr);
+                break;
+
+        case NAND_CMD_STATUS:
+                /* next call to read_byte() will expect a status */
+                break;
+
+        case NAND_CMD_SEQIN:
+                write_page_prologue(mtd, g4_addr);
+
+                /* hack for deferred write of oob bytes */
+                if (doc->oob_page == page_addr)
+                        memcpy(nand->oob_poi, doc->oob_buf, 16);
+                break;
+
+        case NAND_CMD_PAGEPROG:
+                pageprog(mtd);
+                break;
+
+        /* we don't expect these, based on review of nand_base.c */
+        case NAND_CMD_READOOB:
+        case NAND_CMD_READID:
+        case NAND_CMD_ERASE1:
+        case NAND_CMD_ERASE2:
+                dev_warn(doc->dev, "docg4_command: "
+                         "unexpected nand command 0x%x\n", command);
+                break;
+
+        }
+}
+
+static int read_page(struct mtd_info *mtd, struct nand_chip *nand,
+                     uint8_t *buf, int page, bool use_ecc)
+{
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+        uint16_t status, edc_err, *buf16;
+
+        dev_dbg(doc->dev, "%s: page %08x\n", __func__, page);
+
+        writew(DOC_ECCCONF0_READ_MODE |
+               DOC_ECCCONF0_ECC_ENABLE |
+               DOC_ECCCONF0_UNKNOWN |
+               DOCG4_BCH_SIZE,
+               docptr + DOC_ECCCONF0);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+
+        /* the 1st byte from the I/O reg is a status; the rest is page data */
+        status = readw(docptr + DOC_IOSPACE_DATA);
+        if (status & DOCG4_READ_ERROR) {
+                dev_err(doc->dev,
+                        "docg4_read_page: bad status: 0x%02x\n", status);
+                writew(0, docptr + DOC_DATAEND);
+                return -EIO;
+        }
+
+        dev_dbg(doc->dev, "%s: status = 0x%x\n", __func__, status);
+
+        docg4_read_buf(mtd, buf, DOCG4_PAGE_SIZE); /* read the page data */
+
+        /*
+         * Diskonchips read oob immediately after a page read.  Mtd
+         * infrastructure issues a separate command for reading oob after the
+         * page is read.  So we save the oob bytes in a local buffer and just
+         * copy it if the next command reads oob from the same page.
+         */
+
+        /* first 14 oob bytes read from I/O reg */
+        docg4_read_buf(mtd, doc->oob_buf, 14);
+
+        /* last 2 read from another reg */
+        buf16 = (uint16_t *)(doc->oob_buf + 14);
+        *buf16 = readw(docptr + DOCG4_MYSTERY_REG);
+
+        write_nop(docptr);
+
+        if (likely(use_ecc == true)) {
+
+                /* read the register that tells us if bitflip(s) detected  */
+                edc_err = readw(docptr + DOC_ECCCONF1);
+                edc_err = readw(docptr + DOC_ECCCONF1);
+                dev_dbg(doc->dev, "%s: edc_err = 0x%02x\n", __func__, edc_err);
+
+                /* If bitflips are reported, attempt to correct with ecc */
+                if (edc_err & DOC_ECCCONF1_BCH_SYNDROM_ERR) {
+                        int bits_corrected = correct_data(mtd, buf, page);
+                        if (bits_corrected == -EBADMSG)
+                                mtd->ecc_stats.failed++;
+                        else
+                                mtd->ecc_stats.corrected += bits_corrected;
+                }
+        }
+
+        writew(0, docptr + DOC_DATAEND);
+        return 0;
+}
+
+
+static int docg4_read_page_raw(struct mtd_info *mtd, struct nand_chip *nand,
+                               uint8_t *buf, int page)
+{
+        return read_page(mtd, nand, buf, page, false);
+}
+
+static int docg4_read_page(struct mtd_info *mtd, struct nand_chip *nand,
+                           uint8_t *buf, int page)
+{
+        return read_page(mtd, nand, buf, page, true);
+}
+
+static int docg4_read_oob(struct mtd_info *mtd, struct nand_chip *nand,
+                          int page, int sndcmd)
+{
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+        uint16_t status;
+
+        dev_dbg(doc->dev, "%s: page %x\n", __func__, page);
+
+        /*
+         * Oob bytes are read as part of a normal page read.  If the previous
+         * nand command was a read of the page whose oob is now being read, just
+         * copy the oob bytes that we saved in a local buffer and avoid a
+         * separate oob read.
+         */
+        if (doc->last_command.command == NAND_CMD_READ0 &&
+            doc->last_command.page == page) {
+                memcpy(nand->oob_poi, doc->oob_buf, 16);
+                return 0;
+        }
+
+        /*
+         * Separate read of oob data only.
+         */
+        docg4_command(mtd, NAND_CMD_READ0, nand->ecc.size, page);
+
+        writew(DOC_ECCCONF0_READ_MODE | DOCG4_OOB_SIZE, docptr + DOC_ECCCONF0);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+
+        /* the 1st byte from the I/O reg is a status; the rest is oob data */
+        status = readw(docptr + DOC_IOSPACE_DATA);
+        if (status & DOCG4_READ_ERROR) {
+                dev_warn(doc->dev,
+                         "docg4_read_oob failed: status = 0x%02x\n", status);
+                return -EIO;
+        }
+
+        dev_dbg(doc->dev, "%s: status = 0x%x\n", __func__, status);
+
+        docg4_read_buf(mtd, nand->oob_poi, 16);
+
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+        writew(0, docptr + DOC_DATAEND);
+        write_nop(docptr);
+
+        return 0;
+}
+
+static void docg4_erase_block(struct mtd_info *mtd, int page)
+{
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+        uint16_t g4_page;
+
+        dev_dbg(doc->dev, "%s: page %04x\n", __func__, page);
+
+        sequence_reset(mtd);
+
+        writew(DOCG4_SEQ_BLOCKERASE, docptr + DOC_FLASHSEQUENCE);
+        writew(DOC_CMD_PROG_BLOCK_ADDR, docptr + DOC_FLASHCOMMAND);
+        write_nop(docptr);
+
+        /* only 2 bytes of address are written to specify erase block */
+        g4_page = (uint16_t)(page / 4);  /* to g4's 2k page addressing */
+        writeb(g4_page & 0xff, docptr + DOC_FLASHADDRESS);
+        g4_page >>= 8;
+        writeb(g4_page & 0xff, docptr + DOC_FLASHADDRESS);
+        write_nop(docptr);
+
+        /* start the erasure */
+        writew(DOC_CMD_ERASECYCLE2, docptr + DOC_FLASHCOMMAND);
+        write_nop(docptr);
+        write_nop(docptr);
+
+        usleep_range(500, 1000); /* erasure is long; take a snooze */
+        poll_status(doc);
+        writew(DOCG4_SEQ_FLUSH, docptr + DOC_FLASHSEQUENCE);
+        writew(DOCG4_CMD_FLUSH, docptr + DOC_FLASHCOMMAND);
+        writew(DOC_ECCCONF0_READ_MODE | 4, docptr + DOC_ECCCONF0);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+        write_nop(docptr);
+
+        read_progstatus(doc);
+
+        writew(0, docptr + DOC_DATAEND);
+        write_nop(docptr);
+        poll_status(doc);
+        write_nop(docptr);
+}
+
+static void write_page(struct mtd_info *mtd, struct nand_chip *nand,
+                       const uint8_t *buf, bool use_ecc)
+{
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+        uint8_t ecc_buf[8];
+
+        dev_dbg(doc->dev, "%s...\n", __func__);
+
+        writew(DOC_ECCCONF0_ECC_ENABLE |
+               DOC_ECCCONF0_UNKNOWN |
+               DOCG4_BCH_SIZE,
+               docptr + DOC_ECCCONF0);
+        write_nop(docptr);
+
+        /* write the page data */
+        docg4_write_buf16(mtd, buf, DOCG4_PAGE_SIZE);
+
+        /* oob bytes 0 through 5 are written to I/O reg */
+        docg4_write_buf16(mtd, nand->oob_poi, 6);
+
+        /* oob byte 6 written to a separate reg */
+        writew(nand->oob_poi[6], docptr + DOCG4_OOB_6_7);
+
+        write_nop(docptr);
+        write_nop(docptr);
+
+        /* write hw-generated ecc bytes to oob */
+        if (likely(use_ecc == true)) {
+                /* oob byte 7 is hamming code */
+                uint8_t hamming = readb(docptr + DOC_HAMMINGPARITY);
+                hamming = readb(docptr + DOC_HAMMINGPARITY); /* 2nd read */
+                writew(hamming, docptr + DOCG4_OOB_6_7);
+                write_nop(docptr);
+
+                /* read the 7 bch bytes from ecc regs */
+                read_hw_ecc(docptr, ecc_buf);
+                ecc_buf[7] = 0;         /* clear the "page written" flag */
+        }
+
+        /* write user-supplied bytes to oob */
+        else {
+                writew(nand->oob_poi[7], docptr + DOCG4_OOB_6_7);
+                write_nop(docptr);
+                memcpy(ecc_buf, &nand->oob_poi[8], 8);
+        }
+
+        docg4_write_buf16(mtd, ecc_buf, 8);
+        write_nop(docptr);
+        write_nop(docptr);
+        writew(0, docptr + DOC_DATAEND);
+        write_nop(docptr);
+}
+
+static void docg4_write_page_raw(struct mtd_info *mtd, struct nand_chip *nand,
+                                 const uint8_t *buf)
+{
+        return write_page(mtd, nand, buf, false);
+}
+
+static void docg4_write_page(struct mtd_info *mtd, struct nand_chip *nand,
+                             const uint8_t *buf)
+{
+        return write_page(mtd, nand, buf, true);
+}
+
+static int docg4_write_oob(struct mtd_info *mtd, struct nand_chip *nand,
+                           int page)
+{
+        /*
+         * Writing oob-only is not really supported, because MLC nand must write
+         * oob bytes at the same time as page data.  Nonetheless, we save the
+         * oob buffer contents here, and then write it along with the page data
+         * if the same page is subsequently written.  This allows user space
+         * utilities that write the oob data prior to the page data to work
+         * (e.g., nandwrite).  The disdvantage is that, if the intention was to
+         * write oob only, the operation is quietly ignored.  Also, oob can get
+         * corrupted if two concurrent processes are running nandwrite.
+         */
+
+        /* note that bytes 7..14 are hw generated hamming/ecc and overwritten */
+        struct docg4_priv *doc = nand->priv;
+        doc->oob_page = page;
+        memcpy(doc->oob_buf, nand->oob_poi, 16);
+        return 0;
+}
+
+static int __init read_factory_bbt(struct mtd_info *mtd)
+{
+        /*
+         * The device contains a read-only factory bad block table.  Read it and
+         * update the memory-based bbt accordingly.
+         */
+
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        uint32_t g4_addr = mtd_to_docg4_address(DOCG4_FACTORY_BBT_PAGE, 0);
+        uint8_t *buf;
+        int i, block, status;
+
+        buf = kzalloc(DOCG4_PAGE_SIZE, GFP_KERNEL);
+        if (buf == NULL)
+                return -ENOMEM;
+
+        read_page_prologue(mtd, g4_addr);
+        status = docg4_read_page(mtd, nand, buf, DOCG4_FACTORY_BBT_PAGE);
+        if (status)
+                goto exit;
+
+        /*
+         * If no memory-based bbt was created, exit.  This will happen if module
+         * parameter ignore_badblocks is set.  Then why even call this function?
+         * For an unknown reason, block erase always fails if it's the first
+         * operation after device power-up.  The above read ensures it never is.
+         * Ugly, I know.
+         */
+        if (nand->bbt == NULL)  /* no memory-based bbt */
+                goto exit;
+
+        /*
+         * Parse factory bbt and update memory-based bbt.  Factory bbt format is
+         * simple: one bit per block, block numbers increase left to right (msb
+         * to lsb).  Bit clear means bad block.
+         */
+        for (i = block = 0; block < DOCG4_NUMBLOCKS; block += 8, i++) {
+                int bitnum;
+                unsigned long bits = ~buf[i];
+                for_each_set_bit(bitnum, &bits, 8) {
+                        int badblock = block + 7 - bitnum;
+                        nand->bbt[badblock / 4] |=
+                                0x03 << ((badblock % 4) * 2);
+                        mtd->ecc_stats.badblocks++;
+                        dev_notice(doc->dev, "factory-marked bad block: %d\n",
+                                   badblock);
+                }
+        }
+ exit:
+        kfree(buf);
+        return status;
+}
+
+static int docg4_block_markbad(struct mtd_info *mtd, loff_t ofs)
+{
+        /*
+         * Mark a block as bad.  Bad blocks are marked in the oob area of the
+         * first page of the block.  The default scan_bbt() in the nand
+         * infrastructure code works fine for building the memory-based bbt
+         * during initialization, as does the nand infrastructure function that
+         * checks if a block is bad by reading the bbt.  This function replaces
+         * the nand default because writes to oob-only are not supported.
+         */
+
+        int ret, i;
+        uint8_t *buf;
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        struct nand_bbt_descr *bbtd = nand->badblock_pattern;
+        int block = (int)(ofs >> nand->bbt_erase_shift);
+        int page = (int)(ofs >> nand->page_shift);
+        uint32_t g4_addr = mtd_to_docg4_address(page, 0);
+
+        dev_dbg(doc->dev, "%s: %08llx\n", __func__, ofs);
+
+        if (unlikely(ofs & (DOCG4_BLOCK_SIZE - 1)))
+                dev_warn(doc->dev, "%s: ofs %llx not start of block!\n",
+                         __func__, ofs);
+
+        /* allocate blank buffer for page data */
+        buf = kzalloc(DOCG4_PAGE_SIZE, GFP_KERNEL);
+        if (buf == NULL)
+                return -ENOMEM;
+
+        /* update bbt in memory */
+        nand->bbt[block / 4] |= 0x01 << ((block & 0x03) * 2);
+
+        /* write bit-wise negation of pattern to oob buffer */
+        memset(nand->oob_poi, 0xff, mtd->oobsize);
+        for (i = 0; i < bbtd->len; i++)
+                nand->oob_poi[bbtd->offs + i] = ~bbtd->pattern[i];
+
+        /* write first page of block */
+        write_page_prologue(mtd, g4_addr);
+        docg4_write_page(mtd, nand, buf);
+        ret = pageprog(mtd);
+        if (!ret)
+                mtd->ecc_stats.badblocks++;
+
+        kfree(buf);
+
+        return ret;
+}
+
+static int docg4_block_neverbad(struct mtd_info *mtd, loff_t ofs, int getchip)
+{
+        /* only called when module_param ignore_badblocks is set */
+        return 0;
+}
+
+static int docg4_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        /*
+         * Put the device into "deep power-down" mode.  Note that CE# must be
+         * deasserted for this to take effect.  The xscale, e.g., can be
+         * configured to float this signal when the processor enters power-down,
+         * and a suitable pull-up ensures its deassertion.
+         */
+
+        int i;
+        uint8_t pwr_down;
+        struct docg4_priv *doc = platform_get_drvdata(pdev);
+        void __iomem *docptr = doc->virtadr;
+
+        dev_dbg(doc->dev, "%s...\n", __func__);
+
+        /* poll the register that tells us we're ready to go to sleep */
+        for (i = 0; i < 10; i++) {
+                pwr_down = readb(docptr + DOC_POWERMODE);
+                if (pwr_down & DOC_POWERDOWN_READY)
+                        break;
+                usleep_range(1000, 4000);
+        }
+
+        if (pwr_down & DOC_POWERDOWN_READY) {
+                dev_err(doc->dev, "suspend failed; "
+                        "timeout polling DOC_POWERDOWN_READY\n");
+                return -EIO;
+        }
+
+        writew(DOC_ASICMODE_POWERDOWN | DOC_ASICMODE_MDWREN,
+               docptr + DOC_ASICMODE);
+        writew(~(DOC_ASICMODE_POWERDOWN | DOC_ASICMODE_MDWREN),
+               docptr + DOC_ASICMODECONFIRM);
+
+        write_nop(docptr);
+
+        return 0;
+}
+
+static int docg4_resume(struct platform_device *pdev)
+{
+
+        /*
+         * Exit power-down.  Twelve consecutive reads of the address below
+         * accomplishes this, assuming CE# has been asserted.
+         */
+
+        struct docg4_priv *doc = platform_get_drvdata(pdev);
+        void __iomem *docptr = doc->virtadr;
+        int i;
+
+        dev_dbg(doc->dev, "%s...\n", __func__);
+
+        for (i = 0; i < 12; i++)
+                readb(docptr + 0x1fff);
+
+        return 0;
+}
+
+static void __init init_mtd_structs(struct mtd_info *mtd)
+{
+        /* initialize mtd and nand data structures */
+
+        /*
+         * Note that some of the following initializations are not usually
+         * required within a nand driver because they are performed by the nand
+         * infrastructure code as part of nand_scan().  In this case they need
+         * to be initialized here because we skip call to nand_scan_ident() (the
+         * first half of nand_scan()).  The call to nand_scan_ident() is skipped
+         * because for this device the chip id is not read in the manner of a
+         * standard nand device.  Unfortunately, nand_scan_ident() does other
+         * things as well, such as call nand_set_defaults().
+         */
+
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+
+        mtd->size = DOCG4_CHIP_SIZE;
+        mtd->name = "Msys_Diskonchip_G4";
+        mtd->writesize = DOCG4_PAGE_SIZE;
+        mtd->erasesize = DOCG4_BLOCK_SIZE;
+        mtd->oobsize = DOCG4_OOB_SIZE;
+        nand->chipsize = DOCG4_CHIP_SIZE;
+        nand->chip_shift = DOCG4_CHIP_SHIFT;
+        nand->bbt_erase_shift = nand->phys_erase_shift = DOCG4_ERASE_SHIFT;
+        nand->chip_delay = 20;
+        nand->page_shift = DOCG4_PAGE_SHIFT;
+        nand->pagemask = 0x3ffff;
+        nand->badblockpos = NAND_LARGE_BADBLOCK_POS;
+        nand->badblockbits = 8;
+        nand->ecc.layout = &docg4_oobinfo;
+        nand->ecc.mode = NAND_ECC_HW_SYNDROME;
+        nand->ecc.size = DOCG4_PAGE_SIZE;
+        nand->ecc.prepad = 8;
+        nand->ecc.bytes = 8;
+        nand->ecc.strength = DOCG4_T;
+        nand->options =
+                NAND_BUSWIDTH_16 | NAND_NO_SUBPAGE_WRITE | NAND_NO_AUTOINCR;
+        nand->IO_ADDR_R = nand->IO_ADDR_W = doc->virtadr + DOC_IOSPACE_DATA;
+        nand->controller = &nand->hwcontrol;
+        spin_lock_init(&nand->controller->lock);
+        init_waitqueue_head(&nand->controller->wq);
+
+        /* methods */
+        nand->cmdfunc = docg4_command;
+        nand->waitfunc = docg4_wait;
+        nand->select_chip = docg4_select_chip;
+        nand->read_byte = docg4_read_byte;
+        nand->block_markbad = docg4_block_markbad;
+        nand->read_buf = docg4_read_buf;
+        nand->write_buf = docg4_write_buf16;
+        nand->scan_bbt = nand_default_bbt;
+        nand->erase_cmd = docg4_erase_block;
+        nand->ecc.read_page = docg4_read_page;
+        nand->ecc.write_page = docg4_write_page;
+        nand->ecc.read_page_raw = docg4_read_page_raw;
+        nand->ecc.write_page_raw = docg4_write_page_raw;
+        nand->ecc.read_oob = docg4_read_oob;
+        nand->ecc.write_oob = docg4_write_oob;
+
+        /*
+         * The way the nand infrastructure code is written, a memory-based bbt
+         * is not created if NAND_SKIP_BBTSCAN is set.  With no memory bbt,
+         * nand->block_bad() is used.  So when ignoring bad blocks, we skip the
+         * scan and define a dummy block_bad() which always returns 0.
+         */
+        if (ignore_badblocks) {
+                nand->options |= NAND_SKIP_BBTSCAN;
+                nand->block_bad = docg4_block_neverbad;
+        }
+
+}
+
+static int __init read_id_reg(struct mtd_info *mtd)
+{
+        struct nand_chip *nand = mtd->priv;
+        struct docg4_priv *doc = nand->priv;
+        void __iomem *docptr = doc->virtadr;
+        uint16_t id1, id2;
+
+        /* check for presence of g4 chip by reading id registers */
+        id1 = readw(docptr + DOC_CHIPID);
+        id1 = readw(docptr + DOCG4_MYSTERY_REG);
+        id2 = readw(docptr + DOC_CHIPID_INV);
+        id2 = readw(docptr + DOCG4_MYSTERY_REG);
+
+        if (id1 == DOCG4_IDREG1_VALUE && id2 == DOCG4_IDREG2_VALUE) {
+                dev_info(doc->dev,
+                         "NAND device: 128MiB Diskonchip G4 detected\n");
+                return 0;
+        }
+
+        return -ENODEV;
+}
+
+static char const *part_probes[] = { "cmdlinepart", "saftlpart", NULL };
+
+static int __init probe_docg4(struct platform_device *pdev)
+{
+        struct mtd_info *mtd;
+        struct nand_chip *nand;
+        void __iomem *virtadr;
+        struct docg4_priv *doc;
+        int len, retval;
+        struct resource *r;
+        struct device *dev = &pdev->dev;
+
+        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (r == NULL) {
+                dev_err(dev, "no io memory resource defined!\n");
+                return -ENODEV;
+        }
+
+        virtadr = ioremap(r->start, resource_size(r));
+        if (!virtadr) {
+                dev_err(dev, "Diskonchip ioremap failed: %pR\n", r);
+                return -EIO;
+        }
+
+        len = sizeof(struct mtd_info) + sizeof(struct nand_chip) +
+                sizeof(struct docg4_priv);
+        mtd = kzalloc(len, GFP_KERNEL);
+        if (mtd == NULL) {
+                retval = -ENOMEM;
+                goto fail;
+        }
+        nand = (struct nand_chip *) (mtd + 1);
+        doc = (struct docg4_priv *) (nand + 1);
+        mtd->priv = nand;
+        nand->priv = doc;
+        mtd->owner = THIS_MODULE;
+        doc->virtadr = virtadr;
+        doc->dev = dev;
+
+        init_mtd_structs(mtd);
+
+        /* initialize kernel bch algorithm */
+        doc->bch = init_bch(DOCG4_M, DOCG4_T, DOCG4_PRIMITIVE_POLY);
+        if (doc->bch == NULL) {
+                retval = -EINVAL;
+                goto fail;
+        }
+
+        platform_set_drvdata(pdev, doc);
+
+        reset(mtd);
+        retval = read_id_reg(mtd);
+        if (retval == -ENODEV) {
+                dev_warn(dev, "No diskonchip G4 device found.\n");
+                goto fail;
+        }
+
+        retval = nand_scan_tail(mtd);
+        if (retval)
+                goto fail;
+
+        retval = read_factory_bbt(mtd);
+        if (retval)
+                goto fail;
+
+        retval = mtd_device_parse_register(mtd, part_probes, NULL, NULL, 0);
+        if (retval)
+                goto fail;
+
+        doc->mtd = mtd;
+        return 0;
+
+ fail:
+        iounmap(virtadr);
+        if (mtd) {
+                /* re-declarations avoid compiler warning */
+                struct nand_chip *nand = mtd->priv;
+                struct docg4_priv *doc = nand->priv;
+                nand_release(mtd); /* deletes partitions and mtd devices */
+                platform_set_drvdata(pdev, NULL);
+                free_bch(doc->bch);
+                kfree(mtd);
+        }
+
+        return retval;
+}
+
+static int __exit cleanup_docg4(struct platform_device *pdev)
+{
+        struct docg4_priv *doc = platform_get_drvdata(pdev);
+        nand_release(doc->mtd);
+        platform_set_drvdata(pdev, NULL);
+        free_bch(doc->bch);
+        kfree(doc->mtd);
+        iounmap(doc->virtadr);
+        return 0;
+}
+
+static struct platform_driver docg4_driver = {
+        .driver         = {
+                .name   = "docg4",
+                .owner  = THIS_MODULE,
+        },
+        .suspend        = docg4_suspend,
+        .resume         = docg4_resume,
+        .remove         = __exit_p(cleanup_docg4),
+};
+
+static int __init docg4_init(void)
+{
+        return platform_driver_probe(&docg4_driver, probe_docg4);
+}
+
+static void __exit docg4_exit(void)
+{
+        platform_driver_unregister(&docg4_driver);
+}
+
+module_init(docg4_init);
+module_exit(docg4_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mike Dunn");
+MODULE_DESCRIPTION("M-Systems DiskOnChip G4 device driver");
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index 7195ee6efe12..80b5264f0a32 100644
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -813,6 +813,12 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv)
                                 &fsl_elbc_oob_sp_eccm1 : &fsl_elbc_oob_sp_eccm0;
                 chip->ecc.size = 512;
                 chip->ecc.bytes = 3;
+                chip->ecc.strength = 1;
+                /*
+                 * FIXME: can hardware ecc correct 4 bitflips if page size is
+                 * 2k?  Then does hardware report number of corrections for this
+                 * case?  If so, ecc_stats reporting needs to be fixed as well.
+                 */
         } else {
                 /* otherwise fall back to default software ECC */
                 chip->ecc.mode = NAND_ECC_SOFT;
diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c
index e53b76064133..1b8330e1155a 100644
--- a/drivers/mtd/nand/fsmc_nand.c
+++ b/drivers/mtd/nand/fsmc_nand.c
@@ -17,6 +17,10 @@
  */
 
 #include <linux/clk.h>
+#include <linux/completion.h>
+#include <linux/dmaengine.h>
+#include <linux/dma-direction.h>
+#include <linux/dma-mapping.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/module.h>
@@ -27,6 +31,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/nand_ecc.h>
 #include <linux/platform_device.h>
+#include <linux/of.h>
 #include <linux/mtd/partitions.h>
 #include <linux/io.h>
 #include <linux/slab.h>
@@ -34,7 +39,7 @@
 #include <linux/amba/bus.h>
 #include <mtd/mtd-abi.h>
 
-static struct nand_ecclayout fsmc_ecc1_layout = {
+static struct nand_ecclayout fsmc_ecc1_128_layout = {
         .eccbytes = 24,
         .eccpos = {2, 3, 4, 18, 19, 20, 34, 35, 36, 50, 51, 52,
                 66, 67, 68, 82, 83, 84, 98, 99, 100, 114, 115, 116},
@@ -50,7 +55,127 @@ static struct nand_ecclayout fsmc_ecc1_layout = {
         }
 };
 
-static struct nand_ecclayout fsmc_ecc4_lp_layout = {
+static struct nand_ecclayout fsmc_ecc1_64_layout = {
+        .eccbytes = 12,
+        .eccpos = {2, 3, 4, 18, 19, 20, 34, 35, 36, 50, 51, 52},
+        .oobfree = {
+                {.offset = 8, .length = 8},
+                {.offset = 24, .length = 8},
+                {.offset = 40, .length = 8},
+                {.offset = 56, .length = 8},
+        }
+};
+
+static struct nand_ecclayout fsmc_ecc1_16_layout = {
+        .eccbytes = 3,
+        .eccpos = {2, 3, 4},
+        .oobfree = {
+                {.offset = 8, .length = 8},
+        }
+};
+
+/*
+ * ECC4 layout for NAND of pagesize 8192 bytes & OOBsize 256 bytes. 13*16 bytes
+ * of OB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block and 46
+ * bytes are free for use.
+ */
+static struct nand_ecclayout fsmc_ecc4_256_layout = {
+        .eccbytes = 208,
+        .eccpos = {  2,   3,   4,   5,   6,   7,   8,
+                9,  10,  11,  12,  13,  14,
+                18,  19,  20,  21,  22,  23,  24,
+                25,  26,  27,  28,  29,  30,
+                34,  35,  36,  37,  38,  39,  40,
+                41,  42,  43,  44,  45,  46,
+                50,  51,  52,  53,  54,  55,  56,
+                57,  58,  59,  60,  61,  62,
+                66,  67,  68,  69,  70,  71,  72,
+                73,  74,  75,  76,  77,  78,
+                82,  83,  84,  85,  86,  87,  88,
+                89,  90,  91,  92,  93,  94,
+                98,  99, 100, 101, 102, 103, 104,
+                105, 106, 107, 108, 109, 110,
+                114, 115, 116, 117, 118, 119, 120,
+                121, 122, 123, 124, 125, 126,
+                130, 131, 132, 133, 134, 135, 136,
+                137, 138, 139, 140, 141, 142,
+                146, 147, 148, 149, 150, 151, 152,
+                153, 154, 155, 156, 157, 158,
+                162, 163, 164, 165, 166, 167, 168,
+                169, 170, 171, 172, 173, 174,
+                178, 179, 180, 181, 182, 183, 184,
+                185, 186, 187, 188, 189, 190,
+                194, 195, 196, 197, 198, 199, 200,
+                201, 202, 203, 204, 205, 206,
+                210, 211, 212, 213, 214, 215, 216,
+                217, 218, 219, 220, 221, 222,
+                226, 227, 228, 229, 230, 231, 232,
+                233, 234, 235, 236, 237, 238,
+                242, 243, 244, 245, 246, 247, 248,
+                249, 250, 251, 252, 253, 254
+        },
+        .oobfree = {
+                {.offset = 15, .length = 3},
+                {.offset = 31, .length = 3},
+                {.offset = 47, .length = 3},
+                {.offset = 63, .length = 3},
+                {.offset = 79, .length = 3},
+                {.offset = 95, .length = 3},
+                {.offset = 111, .length = 3},
+                {.offset = 127, .length = 3},
+                {.offset = 143, .length = 3},
+                {.offset = 159, .length = 3},
+                {.offset = 175, .length = 3},
+                {.offset = 191, .length = 3},
+                {.offset = 207, .length = 3},
+                {.offset = 223, .length = 3},
+                {.offset = 239, .length = 3},
+                {.offset = 255, .length = 1}
+        }
+};
+
+/*
+ * ECC4 layout for NAND of pagesize 4096 bytes & OOBsize 224 bytes. 13*8 bytes
+ * of OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block & 118
+ * bytes are free for use.
+ */
+static struct nand_ecclayout fsmc_ecc4_224_layout = {
+        .eccbytes = 104,
+        .eccpos = {  2,   3,   4,   5,   6,   7,   8,
+                9,  10,  11,  12,  13,  14,
+                18,  19,  20,  21,  22,  23,  24,
+                25,  26,  27,  28,  29,  30,
+                34,  35,  36,  37,  38,  39,  40,
+                41,  42,  43,  44,  45,  46,
+                50,  51,  52,  53,  54,  55,  56,
+                57,  58,  59,  60,  61,  62,
+                66,  67,  68,  69,  70,  71,  72,
+                73,  74,  75,  76,  77,  78,
+                82,  83,  84,  85,  86,  87,  88,
+                89,  90,  91,  92,  93,  94,
+                98,  99, 100, 101, 102, 103, 104,
+                105, 106, 107, 108, 109, 110,
+                114, 115, 116, 117, 118, 119, 120,
+                121, 122, 123, 124, 125, 126
+        },
+        .oobfree = {
+                {.offset = 15, .length = 3},
+                {.offset = 31, .length = 3},
+                {.offset = 47, .length = 3},
+                {.offset = 63, .length = 3},
+                {.offset = 79, .length = 3},
+                {.offset = 95, .length = 3},
+                {.offset = 111, .length = 3},
+                {.offset = 127, .length = 97}
+        }
+};
+
+/*
+ * ECC4 layout for NAND of pagesize 4096 bytes & OOBsize 128 bytes. 13*8 bytes
+ * of OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block & 22
+ * bytes are free for use.
+ */
+static struct nand_ecclayout fsmc_ecc4_128_layout = {
         .eccbytes = 104,
         .eccpos = {  2,   3,   4,   5,   6,   7,   8,
                 9,  10,  11,  12,  13,  14,
@@ -82,6 +207,45 @@ static struct nand_ecclayout fsmc_ecc4_lp_layout = {
 };
 
 /*
+ * ECC4 layout for NAND of pagesize 2048 bytes & OOBsize 64 bytes. 13*4 bytes of
+ * OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block and 10
+ * bytes are free for use.
+ */
+static struct nand_ecclayout fsmc_ecc4_64_layout = {
+        .eccbytes = 52,
+        .eccpos = {  2,   3,   4,   5,   6,   7,   8,
+                9,  10,  11,  12,  13,  14,
+                18,  19,  20,  21,  22,  23,  24,
+                25,  26,  27,  28,  29,  30,
+                34,  35,  36,  37,  38,  39,  40,
+                41,  42,  43,  44,  45,  46,
+                50,  51,  52,  53,  54,  55,  56,
+                57,  58,  59,  60,  61,  62,
+        },
+        .oobfree = {
+                {.offset = 15, .length = 3},
+                {.offset = 31, .length = 3},
+                {.offset = 47, .length = 3},
+                {.offset = 63, .length = 1},
+        }
+};
+
+/*
+ * ECC4 layout for NAND of pagesize 512 bytes & OOBsize 16 bytes. 13 bytes of
+ * OOB size is reserved for ECC, Byte no. 4 & 5 reserved for bad block and One
+ * byte is free for use.
+ */
+static struct nand_ecclayout fsmc_ecc4_16_layout = {
+        .eccbytes = 13,
+        .eccpos = { 0,  1,  2,  3,  6,  7, 8,
+                9, 10, 11, 12, 13, 14
+        },
+        .oobfree = {
+                {.offset = 15, .length = 1},
+        }
+};
+
+/*
  * ECC placement definitions in oobfree type format.
  * There are 13 bytes of ecc for every 512 byte block and it has to be read
  * consecutively and immediately after the 512 byte data block for hardware to
@@ -103,16 +267,6 @@ static struct fsmc_eccplace fsmc_ecc4_lp_place = {
         }
 };
 
-static struct nand_ecclayout fsmc_ecc4_sp_layout = {
-        .eccbytes = 13,
-        .eccpos = { 0,  1,  2,  3,  6,  7, 8,
-                9, 10, 11, 12, 13, 14
-        },
-        .oobfree = {
-                {.offset = 15, .length = 1},
-        }
-};
-
 static struct fsmc_eccplace fsmc_ecc4_sp_place = {
         .eccplace = {
                 {.offset = 0, .length = 4},
@@ -120,75 +274,24 @@ static struct fsmc_eccplace fsmc_ecc4_sp_place = {
         }
 };
 
-/*
- * Default partition tables to be used if the partition information not
- * provided through platform data.
- *
- * Default partition layout for small page(= 512 bytes) devices
- * Size for "Root file system" is updated in driver based on actual device size
- */
-static struct mtd_partition partition_info_16KB_blk[] = {
-        {
-                .name = "X-loader",
-                .offset = 0,
-                .size = 4*0x4000,
-        },
-        {
-                .name = "U-Boot",
-                .offset = 0x10000,
-                .size = 20*0x4000,
-        },
-        {
-                .name = "Kernel",
-                .offset = 0x60000,
-                .size = 256*0x4000,
-        },
-        {
-                .name = "Root File System",
-                .offset = 0x460000,
-                .size = MTDPART_SIZ_FULL,
-        },
-};
-
-/*
- * Default partition layout for large page(> 512 bytes) devices
- * Size for "Root file system" is updated in driver based on actual device size
- */
-static struct mtd_partition partition_info_128KB_blk[] = {
-        {
-                .name = "X-loader",
-                .offset = 0,
-                .size = 4*0x20000,
-        },
-        {
-                .name = "U-Boot",
-                .offset = 0x80000,
-                .size = 12*0x20000,
-        },
-        {
-                .name = "Kernel",
-                .offset = 0x200000,
-                .size = 48*0x20000,
-        },
-        {
-                .name = "Root File System",
-                .offset = 0x800000,
-                .size = MTDPART_SIZ_FULL,
-        },
-};
-
-
 /**
  * struct fsmc_nand_data - structure for FSMC NAND device state
  *
  * @pid:                Part ID on the AMBA PrimeCell format
  * @mtd:                MTD info for a NAND flash.
  * @nand:               Chip related info for a NAND flash.
+ * @partitions:         Partition info for a NAND Flash.
+ * @nr_partitions:      Total number of partition of a NAND flash.
  *
  * @ecc_place:          ECC placing locations in oobfree type format.
  * @bank:               Bank number for probed device.
  * @clk:                Clock structure for FSMC.
  *
+ * @read_dma_chan:      DMA channel for read access
+ * @write_dma_chan:     DMA channel for write access to NAND
+ * @dma_access_complete: Completion structure
+ *
+ * @data_pa:            NAND Physical port for Data.
  * @data_va:            NAND port for Data.
  * @cmd_va:             NAND port for Command.
  * @addr_va:            NAND port for Address.
@@ -198,16 +301,23 @@ struct fsmc_nand_data {
         u32                     pid;
         struct mtd_info         mtd;
         struct nand_chip        nand;
+        struct mtd_partition    *partitions;
+        unsigned int            nr_partitions;
 
         struct fsmc_eccplace    *ecc_place;
         unsigned int            bank;
+        struct device           *dev;
+        enum access_mode        mode;
         struct clk              *clk;
 
-        struct resource         *resregs;
-        struct resource         *rescmd;
-        struct resource         *resaddr;
-        struct resource         *resdata;
+        /* DMA related objects */
+        struct dma_chan         *read_dma_chan;
+        struct dma_chan         *write_dma_chan;
+        struct completion       dma_access_complete;
+
+        struct fsmc_nand_timings *dev_timings;
 
+        dma_addr_t              data_pa;
         void __iomem            *data_va;
         void __iomem            *cmd_va;
         void __iomem            *addr_va;
@@ -251,28 +361,29 @@ static void fsmc_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
         struct nand_chip *this = mtd->priv;
         struct fsmc_nand_data *host = container_of(mtd,
                                         struct fsmc_nand_data, mtd);
-        struct fsmc_regs *regs = host->regs_va;
+        void *__iomem *regs = host->regs_va;
         unsigned int bank = host->bank;
 
         if (ctrl & NAND_CTRL_CHANGE) {
+                u32 pc;
+
                 if (ctrl & NAND_CLE) {
-                        this->IO_ADDR_R = (void __iomem *)host->cmd_va;
-                        this->IO_ADDR_W = (void __iomem *)host->cmd_va;
+                        this->IO_ADDR_R = host->cmd_va;
+                        this->IO_ADDR_W = host->cmd_va;
                 } else if (ctrl & NAND_ALE) {
-                        this->IO_ADDR_R = (void __iomem *)host->addr_va;
-                        this->IO_ADDR_W = (void __iomem *)host->addr_va;
+                        this->IO_ADDR_R = host->addr_va;
+                        this->IO_ADDR_W = host->addr_va;
                 } else {
-                        this->IO_ADDR_R = (void __iomem *)host->data_va;
-                        this->IO_ADDR_W = (void __iomem *)host->data_va;
+                        this->IO_ADDR_R = host->data_va;
+                        this->IO_ADDR_W = host->data_va;
                 }
 
-                if (ctrl & NAND_NCE) {
-                        writel(readl(&regs->bank_regs[bank].pc) | FSMC_ENABLE,
-                                        &regs->bank_regs[bank].pc);
-                } else {
-                        writel(readl(&regs->bank_regs[bank].pc) & ~FSMC_ENABLE,
-                                       &regs->bank_regs[bank].pc);
-                }
+                pc = readl(FSMC_NAND_REG(regs, bank, PC));
+                if (ctrl & NAND_NCE)
+                        pc |= FSMC_ENABLE;
+                else
+                        pc &= ~FSMC_ENABLE;
+                writel(pc, FSMC_NAND_REG(regs, bank, PC));
         }
 
         mb();
@@ -287,22 +398,42 @@ static void fsmc_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
  * This routine initializes timing parameters related to NAND memory access in
  * FSMC registers
  */
-static void __init fsmc_nand_setup(struct fsmc_regs *regs, uint32_t bank,
-                                   uint32_t busw)
+static void fsmc_nand_setup(void __iomem *regs, uint32_t bank,
+                           uint32_t busw, struct fsmc_nand_timings *timings)
 {
         uint32_t value = FSMC_DEVTYPE_NAND | FSMC_ENABLE | FSMC_WAITON;
+        uint32_t tclr, tar, thiz, thold, twait, tset;
+        struct fsmc_nand_timings *tims;
+        struct fsmc_nand_timings default_timings = {
+                .tclr   = FSMC_TCLR_1,
+                .tar    = FSMC_TAR_1,
+                .thiz   = FSMC_THIZ_1,
+                .thold  = FSMC_THOLD_4,
+                .twait  = FSMC_TWAIT_6,
+                .tset   = FSMC_TSET_0,
+        };
+
+        if (timings)
+                tims = timings;
+        else
+                tims = &default_timings;
+
+        tclr = (tims->tclr & FSMC_TCLR_MASK) << FSMC_TCLR_SHIFT;
+        tar = (tims->tar & FSMC_TAR_MASK) << FSMC_TAR_SHIFT;
+        thiz = (tims->thiz & FSMC_THIZ_MASK) << FSMC_THIZ_SHIFT;
+        thold = (tims->thold & FSMC_THOLD_MASK) << FSMC_THOLD_SHIFT;
+        twait = (tims->twait & FSMC_TWAIT_MASK) << FSMC_TWAIT_SHIFT;
+        tset = (tims->tset & FSMC_TSET_MASK) << FSMC_TSET_SHIFT;
 
         if (busw)
-                writel(value | FSMC_DEVWID_16, &regs->bank_regs[bank].pc);
+                writel(value | FSMC_DEVWID_16, FSMC_NAND_REG(regs, bank, PC));
         else
-                writel(value | FSMC_DEVWID_8, &regs->bank_regs[bank].pc);
-
-        writel(readl(&regs->bank_regs[bank].pc) | FSMC_TCLR_1 | FSMC_TAR_1,
-               &regs->bank_regs[bank].pc);
-        writel(FSMC_THIZ_1 | FSMC_THOLD_4 | FSMC_TWAIT_6 | FSMC_TSET_0,
-               &regs->bank_regs[bank].comm);
-        writel(FSMC_THIZ_1 | FSMC_THOLD_4 | FSMC_TWAIT_6 | FSMC_TSET_0,
-               &regs->bank_regs[bank].attrib);
+                writel(value | FSMC_DEVWID_8, FSMC_NAND_REG(regs, bank, PC));
+
+        writel(readl(FSMC_NAND_REG(regs, bank, PC)) | tclr | tar,
+                        FSMC_NAND_REG(regs, bank, PC));
+        writel(thiz | thold | twait | tset, FSMC_NAND_REG(regs, bank, COMM));
+        writel(thiz | thold | twait | tset, FSMC_NAND_REG(regs, bank, ATTRIB));
 }
 
 /*
@@ -312,15 +443,15 @@ static void fsmc_enable_hwecc(struct mtd_info *mtd, int mode)
 {
         struct fsmc_nand_data *host = container_of(mtd,
                                         struct fsmc_nand_data, mtd);
-        struct fsmc_regs *regs = host->regs_va;
+        void __iomem *regs = host->regs_va;
         uint32_t bank = host->bank;
 
-        writel(readl(&regs->bank_regs[bank].pc) & ~FSMC_ECCPLEN_256,
-                       &regs->bank_regs[bank].pc);
-        writel(readl(&regs->bank_regs[bank].pc) & ~FSMC_ECCEN,
-                        &regs->bank_regs[bank].pc);
-        writel(readl(&regs->bank_regs[bank].pc) | FSMC_ECCEN,
-                        &regs->bank_regs[bank].pc);
+        writel(readl(FSMC_NAND_REG(regs, bank, PC)) & ~FSMC_ECCPLEN_256,
+                        FSMC_NAND_REG(regs, bank, PC));
+        writel(readl(FSMC_NAND_REG(regs, bank, PC)) & ~FSMC_ECCEN,
+                        FSMC_NAND_REG(regs, bank, PC));
+        writel(readl(FSMC_NAND_REG(regs, bank, PC)) | FSMC_ECCEN,
+                        FSMC_NAND_REG(regs, bank, PC));
 }
 
 /*
@@ -333,37 +464,42 @@ static int fsmc_read_hwecc_ecc4(struct mtd_info *mtd, const uint8_t *data,
 {
         struct fsmc_nand_data *host = container_of(mtd,
                                         struct fsmc_nand_data, mtd);
-        struct fsmc_regs *regs = host->regs_va;
+        void __iomem *regs = host->regs_va;
         uint32_t bank = host->bank;
         uint32_t ecc_tmp;
         unsigned long deadline = jiffies + FSMC_BUSY_WAIT_TIMEOUT;
 
         do {
-                if (readl(&regs->bank_regs[bank].sts) & FSMC_CODE_RDY)
+                if (readl(FSMC_NAND_REG(regs, bank, STS)) & FSMC_CODE_RDY)
                         break;
                 else
                         cond_resched();
         } while (!time_after_eq(jiffies, deadline));
 
-        ecc_tmp = readl(&regs->bank_regs[bank].ecc1);
+        if (time_after_eq(jiffies, deadline)) {
+                dev_err(host->dev, "calculate ecc timed out\n");
+                return -ETIMEDOUT;
+        }
+
+        ecc_tmp = readl(FSMC_NAND_REG(regs, bank, ECC1));
         ecc[0] = (uint8_t) (ecc_tmp >> 0);
         ecc[1] = (uint8_t) (ecc_tmp >> 8);
         ecc[2] = (uint8_t) (ecc_tmp >> 16);
         ecc[3] = (uint8_t) (ecc_tmp >> 24);
 
-        ecc_tmp = readl(&regs->bank_regs[bank].ecc2);
+        ecc_tmp = readl(FSMC_NAND_REG(regs, bank, ECC2));
         ecc[4] = (uint8_t) (ecc_tmp >> 0);
         ecc[5] = (uint8_t) (ecc_tmp >> 8);
         ecc[6] = (uint8_t) (ecc_tmp >> 16);
         ecc[7] = (uint8_t) (ecc_tmp >> 24);
 
-        ecc_tmp = readl(&regs->bank_regs[bank].ecc3);
+        ecc_tmp = readl(FSMC_NAND_REG(regs, bank, ECC3));
         ecc[8] = (uint8_t) (ecc_tmp >> 0);
         ecc[9] = (uint8_t) (ecc_tmp >> 8);
         ecc[10] = (uint8_t) (ecc_tmp >> 16);
         ecc[11] = (uint8_t) (ecc_tmp >> 24);
 
-        ecc_tmp = readl(&regs->bank_regs[bank].sts);
+        ecc_tmp = readl(FSMC_NAND_REG(regs, bank, STS));
         ecc[12] = (uint8_t) (ecc_tmp >> 16);
 
         return 0;
@@ -379,11 +515,11 @@ static int fsmc_read_hwecc_ecc1(struct mtd_info *mtd, const uint8_t *data,
 {
         struct fsmc_nand_data *host = container_of(mtd,
                                         struct fsmc_nand_data, mtd);
-        struct fsmc_regs *regs = host->regs_va;
+        void __iomem *regs = host->regs_va;
         uint32_t bank = host->bank;
         uint32_t ecc_tmp;
 
-        ecc_tmp = readl(&regs->bank_regs[bank].ecc1);
+        ecc_tmp = readl(FSMC_NAND_REG(regs, bank, ECC1));
         ecc[0] = (uint8_t) (ecc_tmp >> 0);
         ecc[1] = (uint8_t) (ecc_tmp >> 8);
         ecc[2] = (uint8_t) (ecc_tmp >> 16);
@@ -391,6 +527,166 @@ static int fsmc_read_hwecc_ecc1(struct mtd_info *mtd, const uint8_t *data,
         return 0;
 }
 
+/* Count the number of 0's in buff upto a max of max_bits */
+static int count_written_bits(uint8_t *buff, int size, int max_bits)
+{
+        int k, written_bits = 0;
+
+        for (k = 0; k < size; k++) {
+                written_bits += hweight8(~buff[k]);
+                if (written_bits > max_bits)
+                        break;
+        }
+
+        return written_bits;
+}
+
+static void dma_complete(void *param)
+{
+        struct fsmc_nand_data *host = param;
+
+        complete(&host->dma_access_complete);
+}
+
+static int dma_xfer(struct fsmc_nand_data *host, void *buffer, int len,
+                enum dma_data_direction direction)
+{
+        struct dma_chan *chan;
+        struct dma_device *dma_dev;
+        struct dma_async_tx_descriptor *tx;
+        dma_addr_t dma_dst, dma_src, dma_addr;
+        dma_cookie_t cookie;
+        unsigned long flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT;
+        int ret;
+
+        if (direction == DMA_TO_DEVICE)
+                chan = host->write_dma_chan;
+        else if (direction == DMA_FROM_DEVICE)
+                chan = host->read_dma_chan;
+        else
+                return -EINVAL;
+
+        dma_dev = chan->device;
+        dma_addr = dma_map_single(dma_dev->dev, buffer, len, direction);
+
+        if (direction == DMA_TO_DEVICE) {
+                dma_src = dma_addr;
+                dma_dst = host->data_pa;
+                flags |= DMA_COMPL_SRC_UNMAP_SINGLE | DMA_COMPL_SKIP_DEST_UNMAP;
+        } else {
+                dma_src = host->data_pa;
+                dma_dst = dma_addr;
+                flags |= DMA_COMPL_DEST_UNMAP_SINGLE | DMA_COMPL_SKIP_SRC_UNMAP;
+        }
+
+        tx = dma_dev->device_prep_dma_memcpy(chan, dma_dst, dma_src,
+                        len, flags);
+
+        if (!tx) {
+                dev_err(host->dev, "device_prep_dma_memcpy error\n");
+                dma_unmap_single(dma_dev->dev, dma_addr, len, direction);
+                return -EIO;
+        }
+
+        tx->callback = dma_complete;
+        tx->callback_param = host;
+        cookie = tx->tx_submit(tx);
+
+        ret = dma_submit_error(cookie);
+        if (ret) {
+                dev_err(host->dev, "dma_submit_error %d\n", cookie);
+                return ret;
+        }
+
+        dma_async_issue_pending(chan);
+
+        ret =
+        wait_for_completion_interruptible_timeout(&host->dma_access_complete,
+                                msecs_to_jiffies(3000));
+        if (ret <= 0) {
+                chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
+                dev_err(host->dev, "wait_for_completion_timeout\n");
+                return ret ? ret : -ETIMEDOUT;
+        }
+
+        return 0;
+}
+
+/*
+ * fsmc_write_buf - write buffer to chip
+ * @mtd:        MTD device structure
+ * @buf:        data buffer
+ * @len:        number of bytes to write
+ */
+static void fsmc_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
+{
+        int i;
+        struct nand_chip *chip = mtd->priv;
+
+        if (IS_ALIGNED((uint32_t)buf, sizeof(uint32_t)) &&
+                        IS_ALIGNED(len, sizeof(uint32_t))) {
+                uint32_t *p = (uint32_t *)buf;
+                len = len >> 2;
+                for (i = 0; i < len; i++)
+                        writel(p[i], chip->IO_ADDR_W);
+        } else {
+                for (i = 0; i < len; i++)
+                        writeb(buf[i], chip->IO_ADDR_W);
+        }
+}
+
+/*
+ * fsmc_read_buf - read chip data into buffer
+ * @mtd:        MTD device structure
+ * @buf:        buffer to store date
+ * @len:        number of bytes to read
+ */
+static void fsmc_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+        int i;
+        struct nand_chip *chip = mtd->priv;
+
+        if (IS_ALIGNED((uint32_t)buf, sizeof(uint32_t)) &&
+                        IS_ALIGNED(len, sizeof(uint32_t))) {
+                uint32_t *p = (uint32_t *)buf;
+                len = len >> 2;
+                for (i = 0; i < len; i++)
+                        p[i] = readl(chip->IO_ADDR_R);
+        } else {
+                for (i = 0; i < len; i++)
+                        buf[i] = readb(chip->IO_ADDR_R);
+        }
+}
+
+/*
+ * fsmc_read_buf_dma - read chip data into buffer
+ * @mtd:        MTD device structure
+ * @buf:        buffer to store date
+ * @len:        number of bytes to read
+ */
+static void fsmc_read_buf_dma(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+        struct fsmc_nand_data *host;
+
+        host = container_of(mtd, struct fsmc_nand_data, mtd);
+        dma_xfer(host, buf, len, DMA_FROM_DEVICE);
+}
+
+/*
+ * fsmc_write_buf_dma - write buffer to chip
+ * @mtd:        MTD device structure
+ * @buf:        data buffer
+ * @len:        number of bytes to write
+ */
+static void fsmc_write_buf_dma(struct mtd_info *mtd, const uint8_t *buf,
+                int len)
+{
+        struct fsmc_nand_data *host;
+
+        host = container_of(mtd, struct fsmc_nand_data, mtd);
+        dma_xfer(host, (void *)buf, len, DMA_TO_DEVICE);
+}
+
 /*
  * fsmc_read_page_hwecc
  * @mtd:        mtd info structure
@@ -426,7 +722,6 @@ static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
         uint8_t *oob = (uint8_t *)&ecc_oob[0];
 
         for (i = 0, s = 0; s < eccsteps; s++, i += eccbytes, p += eccsize) {
-
                 chip->cmdfunc(mtd, NAND_CMD_READ0, s * eccsize, page);
                 chip->ecc.hwctl(mtd, NAND_ECC_READ);
                 chip->read_buf(mtd, p, eccsize);
@@ -437,17 +732,19 @@ static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
                         group++;
 
                         /*
-                        * length is intentionally kept a higher multiple of 2
-                        * to read at least 13 bytes even in case of 16 bit NAND
-                        * devices
-                        */
-                        len = roundup(len, 2);
+                         * length is intentionally kept a higher multiple of 2
+                         * to read at least 13 bytes even in case of 16 bit NAND
+                         * devices
+                         */
+                        if (chip->options & NAND_BUSWIDTH_16)
+                                len = roundup(len, 2);
+
                         chip->cmdfunc(mtd, NAND_CMD_READOOB, off, page);
                         chip->read_buf(mtd, oob + j, len);
                         j += len;
                 }
 
-                memcpy(&ecc_code[i], oob, 13);
+                memcpy(&ecc_code[i], oob, chip->ecc.bytes);
                 chip->ecc.calculate(mtd, p, &ecc_calc[i]);
 
                 stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
@@ -461,7 +758,7 @@ static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
 }
 
 /*
- * fsmc_correct_data
+ * fsmc_bch8_correct_data
  * @mtd:        mtd info structure
  * @dat:        buffer of read data
  * @read_ecc:   ecc read from device spare area
@@ -470,19 +767,51 @@ static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
  * calc_ecc is a 104 bit information containing maximum of 8 error
  * offset informations of 13 bits each in 512 bytes of read data.
  */
-static int fsmc_correct_data(struct mtd_info *mtd, uint8_t *dat,
+static int fsmc_bch8_correct_data(struct mtd_info *mtd, uint8_t *dat,
                              uint8_t *read_ecc, uint8_t *calc_ecc)
 {
         struct fsmc_nand_data *host = container_of(mtd,
                                         struct fsmc_nand_data, mtd);
-        struct fsmc_regs *regs = host->regs_va;
+        struct nand_chip *chip = mtd->priv;
+        void __iomem *regs = host->regs_va;
         unsigned int bank = host->bank;
-        uint16_t err_idx[8];
-        uint64_t ecc_data[2];
+        uint32_t err_idx[8];
         uint32_t num_err, i;
+        uint32_t ecc1, ecc2, ecc3, ecc4;
+
+        num_err = (readl(FSMC_NAND_REG(regs, bank, STS)) >> 10) & 0xF;
+
+        /* no bit flipping */
+        if (likely(num_err == 0))
+                return 0;
+
+        /* too many errors */
+        if (unlikely(num_err > 8)) {
+                /*
+                 * This is a temporary erase check. A newly erased page read
+                 * would result in an ecc error because the oob data is also
+                 * erased to FF and the calculated ecc for an FF data is not
+                 * FF..FF.
+                 * This is a workaround to skip performing correction in case
+                 * data is FF..FF
+                 *
+                 * Logic:
+                 * For every page, each bit written as 0 is counted until these
+                 * number of bits are greater than 8 (the maximum correction
+                 * capability of FSMC for each 512 + 13 bytes)
+                 */
+
+                int bits_ecc = count_written_bits(read_ecc, chip->ecc.bytes, 8);
+                int bits_data = count_written_bits(dat, chip->ecc.size, 8);
+
+                if ((bits_ecc + bits_data) <= 8) {
+                        if (bits_data)
+                                memset(dat, 0xff, chip->ecc.size);
+                        return bits_data;
+                }
 
-        /* The calculated ecc is actually the correction index in data */
-        memcpy(ecc_data, calc_ecc, 13);
+                return -EBADMSG;
+        }
 
         /*
          * ------------------- calc_ecc[] bit wise -----------|--13 bits--|
@@ -493,27 +822,26 @@ static int fsmc_correct_data(struct mtd_info *mtd, uint8_t *dat,
          * uint64_t array and error offset indexes are populated in err_idx
          * array
          */
-        for (i = 0; i < 8; i++) {
-                if (i == 4) {
-                        err_idx[4] = ((ecc_data[1] & 0x1) << 12) | ecc_data[0];
-                        ecc_data[1] >>= 1;
-                        continue;
-                }
-                err_idx[i] = (ecc_data[i/4] & 0x1FFF);
-                ecc_data[i/4] >>= 13;
-        }
-
-        num_err = (readl(&regs->bank_regs[bank].sts) >> 10) & 0xF;
-
-        if (num_err == 0xF)
-                return -EBADMSG;
+        ecc1 = readl(FSMC_NAND_REG(regs, bank, ECC1));
+        ecc2 = readl(FSMC_NAND_REG(regs, bank, ECC2));
+        ecc3 = readl(FSMC_NAND_REG(regs, bank, ECC3));
+        ecc4 = readl(FSMC_NAND_REG(regs, bank, STS));
+
+        err_idx[0] = (ecc1 >> 0) & 0x1FFF;
+        err_idx[1] = (ecc1 >> 13) & 0x1FFF;
+        err_idx[2] = (((ecc2 >> 0) & 0x7F) << 6) | ((ecc1 >> 26) & 0x3F);
+        err_idx[3] = (ecc2 >> 7) & 0x1FFF;
+        err_idx[4] = (((ecc3 >> 0) & 0x1) << 12) | ((ecc2 >> 20) & 0xFFF);
+        err_idx[5] = (ecc3 >> 1) & 0x1FFF;
+        err_idx[6] = (ecc3 >> 14) & 0x1FFF;
+        err_idx[7] = (((ecc4 >> 16) & 0xFF) << 5) | ((ecc3 >> 27) & 0x1F);
 
         i = 0;
         while (num_err--) {
                 change_bit(0, (unsigned long *)&err_idx[i]);
                 change_bit(1, (unsigned long *)&err_idx[i]);
 
-                if (err_idx[i] <= 512 * 8) {
+                if (err_idx[i] < chip->ecc.size * 8) {
                         change_bit(err_idx[i], (unsigned long *)dat);
                         i++;
                 }
@@ -521,6 +849,44 @@ static int fsmc_correct_data(struct mtd_info *mtd, uint8_t *dat,
         return i;
 }
 
+static bool filter(struct dma_chan *chan, void *slave)
+{
+        chan->private = slave;
+        return true;
+}
+
+#ifdef CONFIG_OF
+static int __devinit fsmc_nand_probe_config_dt(struct platform_device *pdev,
+                                               struct device_node *np)
+{
+        struct fsmc_nand_platform_data *pdata = dev_get_platdata(&pdev->dev);
+        u32 val;
+
+        /* Set default NAND width to 8 bits */
+        pdata->width = 8;
+        if (!of_property_read_u32(np, "bank-width", &val)) {
+                if (val == 2) {
+                        pdata->width = 16;
+                } else if (val != 1) {
+                        dev_err(&pdev->dev, "invalid bank-width %u\n", val);
+                        return -EINVAL;
+                }
+        }
+        of_property_read_u32(np, "st,ale-off", &pdata->ale_off);
+        of_property_read_u32(np, "st,cle-off", &pdata->cle_off);
+        if (of_get_property(np, "nand-skip-bbtscan", NULL))
+                pdata->options = NAND_SKIP_BBTSCAN;
+
+        return 0;
+}
+#else
+static int __devinit fsmc_nand_probe_config_dt(struct platform_device *pdev,
+                                               struct device_node *np)
+{
+        return -ENOSYS;
+}
+#endif
+
 /*
  * fsmc_nand_probe - Probe function
  * @pdev:       platform device structure
@@ -528,102 +894,109 @@ static int fsmc_correct_data(struct mtd_info *mtd, uint8_t *dat,
 static int __init fsmc_nand_probe(struct platform_device *pdev)
 {
         struct fsmc_nand_platform_data *pdata = dev_get_platdata(&pdev->dev);
+        struct device_node __maybe_unused *np = pdev->dev.of_node;
+        struct mtd_part_parser_data ppdata = {};
         struct fsmc_nand_data *host;
         struct mtd_info *mtd;
         struct nand_chip *nand;
-        struct fsmc_regs *regs;
         struct resource *res;
+        dma_cap_mask_t mask;
         int ret = 0;
         u32 pid;
         int i;
 
+        if (np) {
+                pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+                pdev->dev.platform_data = pdata;
+                ret = fsmc_nand_probe_config_dt(pdev, np);
+                if (ret) {
+                        dev_err(&pdev->dev, "no platform data\n");
+                        return -ENODEV;
+                }
+        }
+
         if (!pdata) {
                 dev_err(&pdev->dev, "platform data is NULL\n");
                 return -EINVAL;
         }
 
         /* Allocate memory for the device structure (and zero it) */
-        host = kzalloc(sizeof(*host), GFP_KERNEL);
+        host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL);
         if (!host) {
                 dev_err(&pdev->dev, "failed to allocate device structure\n");
                 return -ENOMEM;
         }
 
         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_data");
-        if (!res) {
-                ret = -EIO;
-                goto err_probe1;
-        }
+        if (!res)
+                return -EINVAL;
 
-        host->resdata = request_mem_region(res->start, resource_size(res),
-                        pdev->name);
-        if (!host->resdata) {
-                ret = -EIO;
-                goto err_probe1;
+        if (!devm_request_mem_region(&pdev->dev, res->start, resource_size(res),
+                                pdev->name)) {
+                dev_err(&pdev->dev, "Failed to get memory data resourse\n");
+                return -ENOENT;
         }
 
-        host->data_va = ioremap(res->start, resource_size(res));
+        host->data_pa = (dma_addr_t)res->start;
+        host->data_va = devm_ioremap(&pdev->dev, res->start,
+                        resource_size(res));
         if (!host->data_va) {
-                ret = -EIO;
-                goto err_probe1;
+                dev_err(&pdev->dev, "data ioremap failed\n");
+                return -ENOMEM;
         }
 
-        host->resaddr = request_mem_region(res->start + PLAT_NAND_ALE,
-                        resource_size(res), pdev->name);
-        if (!host->resaddr) {
-                ret = -EIO;
-                goto err_probe1;
+        if (!devm_request_mem_region(&pdev->dev, res->start + pdata->ale_off,
+                        resource_size(res), pdev->name)) {
+                dev_err(&pdev->dev, "Failed to get memory ale resourse\n");
+                return -ENOENT;
         }
 
-        host->addr_va = ioremap(res->start + PLAT_NAND_ALE, resource_size(res));
+        host->addr_va = devm_ioremap(&pdev->dev, res->start + pdata->ale_off,
+                        resource_size(res));
         if (!host->addr_va) {
-                ret = -EIO;
-                goto err_probe1;
+                dev_err(&pdev->dev, "ale ioremap failed\n");
+                return -ENOMEM;
         }
 
-        host->rescmd = request_mem_region(res->start + PLAT_NAND_CLE,
-                        resource_size(res), pdev->name);
-        if (!host->rescmd) {
-                ret = -EIO;
-                goto err_probe1;
+        if (!devm_request_mem_region(&pdev->dev, res->start + pdata->cle_off,
+                        resource_size(res), pdev->name)) {
+                dev_err(&pdev->dev, "Failed to get memory cle resourse\n");
+                return -ENOENT;
         }
 
-        host->cmd_va = ioremap(res->start + PLAT_NAND_CLE, resource_size(res));
+        host->cmd_va = devm_ioremap(&pdev->dev, res->start + pdata->cle_off,
+                        resource_size(res));
         if (!host->cmd_va) {
-                ret = -EIO;
-                goto err_probe1;
+                dev_err(&pdev->dev, "ale ioremap failed\n");
+                return -ENOMEM;
         }
 
         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fsmc_regs");
-        if (!res) {
-                ret = -EIO;
-                goto err_probe1;
-        }
+        if (!res)
+                return -EINVAL;
 
-        host->resregs = request_mem_region(res->start, resource_size(res),
-                        pdev->name);
-        if (!host->resregs) {
-                ret = -EIO;
-                goto err_probe1;
+        if (!devm_request_mem_region(&pdev->dev, res->start, resource_size(res),
+                        pdev->name)) {
+                dev_err(&pdev->dev, "Failed to get memory regs resourse\n");
+                return -ENOENT;
         }
 
-        host->regs_va = ioremap(res->start, resource_size(res));
+        host->regs_va = devm_ioremap(&pdev->dev, res->start,
+                        resource_size(res));
         if (!host->regs_va) {
-                ret = -EIO;
-                goto err_probe1;
+                dev_err(&pdev->dev, "regs ioremap failed\n");
+                return -ENOMEM;
         }
 
         host->clk = clk_get(&pdev->dev, NULL);
         if (IS_ERR(host->clk)) {
                 dev_err(&pdev->dev, "failed to fetch block clock\n");
-                ret = PTR_ERR(host->clk);
-                host->clk = NULL;
-                goto err_probe1;
+                return PTR_ERR(host->clk);
         }
 
         ret = clk_enable(host->clk);
         if (ret)
-                goto err_probe1;
+                goto err_clk_enable;
 
         /*
          * This device ID is actually a common AMBA ID as used on the
@@ -639,7 +1012,14 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
 
         host->bank = pdata->bank;
         host->select_chip = pdata->select_bank;
-        regs = host->regs_va;
+        host->partitions = pdata->partitions;
+        host->nr_partitions = pdata->nr_partitions;
+        host->dev = &pdev->dev;
+        host->dev_timings = pdata->nand_timings;
+        host->mode = pdata->mode;
+
+        if (host->mode == USE_DMA_ACCESS)
+                init_completion(&host->dma_access_complete);
 
         /* Link all private pointers */
         mtd = &host->mtd;
@@ -658,21 +1038,53 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
         nand->ecc.size = 512;
         nand->options = pdata->options;
         nand->select_chip = fsmc_select_chip;
+        nand->badblockbits = 7;
 
         if (pdata->width == FSMC_NAND_BW16)
                 nand->options |= NAND_BUSWIDTH_16;
 
-        fsmc_nand_setup(regs, host->bank, nand->options & NAND_BUSWIDTH_16);
+        switch (host->mode) {
+        case USE_DMA_ACCESS:
+                dma_cap_zero(mask);
+                dma_cap_set(DMA_MEMCPY, mask);
+                host->read_dma_chan = dma_request_channel(mask, filter,
+                                pdata->read_dma_priv);
+                if (!host->read_dma_chan) {
+                        dev_err(&pdev->dev, "Unable to get read dma channel\n");
+                        goto err_req_read_chnl;
+                }
+                host->write_dma_chan = dma_request_channel(mask, filter,
+                                pdata->write_dma_priv);
+                if (!host->write_dma_chan) {
+                        dev_err(&pdev->dev, "Unable to get write dma channel\n");
+                        goto err_req_write_chnl;
+                }
+                nand->read_buf = fsmc_read_buf_dma;
+                nand->write_buf = fsmc_write_buf_dma;
+                break;
+
+        default:
+        case USE_WORD_ACCESS:
+                nand->read_buf = fsmc_read_buf;
+                nand->write_buf = fsmc_write_buf;
+                break;
+        }
+
+        fsmc_nand_setup(host->regs_va, host->bank,
+                        nand->options & NAND_BUSWIDTH_16,
+                        host->dev_timings);
 
         if (AMBA_REV_BITS(host->pid) >= 8) {
                 nand->ecc.read_page = fsmc_read_page_hwecc;
                 nand->ecc.calculate = fsmc_read_hwecc_ecc4;
-                nand->ecc.correct = fsmc_correct_data;
+                nand->ecc.correct = fsmc_bch8_correct_data;
                 nand->ecc.bytes = 13;
+                nand->ecc.strength = 8;
         } else {
                 nand->ecc.calculate = fsmc_read_hwecc_ecc1;
                 nand->ecc.correct = nand_correct_data;
                 nand->ecc.bytes = 3;
+                nand->ecc.strength = 1;
         }
 
         /*
@@ -681,19 +1093,52 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
         if (nand_scan_ident(&host->mtd, 1, NULL)) {
                 ret = -ENXIO;
                 dev_err(&pdev->dev, "No NAND Device found!\n");
-                goto err_probe;
+                goto err_scan_ident;
         }
 
         if (AMBA_REV_BITS(host->pid) >= 8) {
-                if (host->mtd.writesize == 512) {
-                        nand->ecc.layout = &fsmc_ecc4_sp_layout;
+                switch (host->mtd.oobsize) {
+                case 16:
+                        nand->ecc.layout = &fsmc_ecc4_16_layout;
                         host->ecc_place = &fsmc_ecc4_sp_place;
-                } else {
-                        nand->ecc.layout = &fsmc_ecc4_lp_layout;
+                        break;
+                case 64:
+                        nand->ecc.layout = &fsmc_ecc4_64_layout;
+                        host->ecc_place = &fsmc_ecc4_lp_place;
+                        break;
+                case 128:
+                        nand->ecc.layout = &fsmc_ecc4_128_layout;
+                        host->ecc_place = &fsmc_ecc4_lp_place;
+                        break;
+                case 224:
+                        nand->ecc.layout = &fsmc_ecc4_224_layout;
                         host->ecc_place = &fsmc_ecc4_lp_place;
+                        break;
+                case 256:
+                        nand->ecc.layout = &fsmc_ecc4_256_layout;
+                        host->ecc_place = &fsmc_ecc4_lp_place;
+                        break;
+                default:
+                        printk(KERN_WARNING "No oob scheme defined for "
+                               "oobsize %d\n", mtd->oobsize);
+                        BUG();
                 }
         } else {
-                nand->ecc.layout = &fsmc_ecc1_layout;
+                switch (host->mtd.oobsize) {
+                case 16:
+                        nand->ecc.layout = &fsmc_ecc1_16_layout;
+                        break;
+                case 64:
+                        nand->ecc.layout = &fsmc_ecc1_64_layout;
+                        break;
+                case 128:
+                        nand->ecc.layout = &fsmc_ecc1_128_layout;
+                        break;
+                default:
+                        printk(KERN_WARNING "No oob scheme defined for "
+                               "oobsize %d\n", mtd->oobsize);
+                        BUG();
+                }
         }
 
         /* Second stage of scan to fill MTD data-structures */
@@ -713,13 +1158,9 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
          * Check for partition info passed
          */
         host->mtd.name = "nand";
-        ret = mtd_device_parse_register(&host->mtd, NULL, 0,
-                        host->mtd.size <= 0x04000000 ?
-                                partition_info_16KB_blk :
-                                partition_info_128KB_blk,
-                        host->mtd.size <= 0x04000000 ?
-                                ARRAY_SIZE(partition_info_16KB_blk) :
-                                ARRAY_SIZE(partition_info_128KB_blk));
+        ppdata.of_node = np;
+        ret = mtd_device_parse_register(&host->mtd, NULL, &ppdata,
+                                        host->partitions, host->nr_partitions);
         if (ret)
                 goto err_probe;
 
@@ -728,32 +1169,16 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
         return 0;
 
 err_probe:
+err_scan_ident:
+        if (host->mode == USE_DMA_ACCESS)
+                dma_release_channel(host->write_dma_chan);
+err_req_write_chnl:
+        if (host->mode == USE_DMA_ACCESS)
+                dma_release_channel(host->read_dma_chan);
+err_req_read_chnl:
         clk_disable(host->clk);
-err_probe1:
-        if (host->clk)
-                clk_put(host->clk);
-        if (host->regs_va)
-                iounmap(host->regs_va);
-        if (host->resregs)
-                release_mem_region(host->resregs->start,
-                                resource_size(host->resregs));
-        if (host->cmd_va)
-                iounmap(host->cmd_va);
-        if (host->rescmd)
-                release_mem_region(host->rescmd->start,
-                                resource_size(host->rescmd));
-        if (host->addr_va)
-                iounmap(host->addr_va);
-        if (host->resaddr)
-                release_mem_region(host->resaddr->start,
-                                resource_size(host->resaddr));
-        if (host->data_va)
-                iounmap(host->data_va);
-        if (host->resdata)
-                release_mem_region(host->resdata->start,
-                                resource_size(host->resdata));
-
-        kfree(host);
+err_clk_enable:
+        clk_put(host->clk);
         return ret;
 }
 
@@ -768,24 +1193,15 @@ static int fsmc_nand_remove(struct platform_device *pdev)
 
         if (host) {
                 nand_release(&host->mtd);
+
+                if (host->mode == USE_DMA_ACCESS) {
+                        dma_release_channel(host->write_dma_chan);
+                        dma_release_channel(host->read_dma_chan);
+                }
                 clk_disable(host->clk);
                 clk_put(host->clk);
-
-                iounmap(host->regs_va);
-                release_mem_region(host->resregs->start,
-                                resource_size(host->resregs));
-                iounmap(host->cmd_va);
-                release_mem_region(host->rescmd->start,
-                                resource_size(host->rescmd));
-                iounmap(host->addr_va);
-                release_mem_region(host->resaddr->start,
-                                resource_size(host->resaddr));
-                iounmap(host->data_va);
-                release_mem_region(host->resdata->start,
-                                resource_size(host->resdata));
-
-                kfree(host);
         }
+
         return 0;
 }
 
@@ -801,15 +1217,24 @@ static int fsmc_nand_suspend(struct device *dev)
 static int fsmc_nand_resume(struct device *dev)
 {
         struct fsmc_nand_data *host = dev_get_drvdata(dev);
-        if (host)
+        if (host) {
                 clk_enable(host->clk);
+                fsmc_nand_setup(host->regs_va, host->bank,
+                                host->nand.options & NAND_BUSWIDTH_16,
+                                host->dev_timings);
+        }
         return 0;
 }
 
-static const struct dev_pm_ops fsmc_nand_pm_ops = {
-        .suspend = fsmc_nand_suspend,
-        .resume = fsmc_nand_resume,
+static SIMPLE_DEV_PM_OPS(fsmc_nand_pm_ops, fsmc_nand_suspend, fsmc_nand_resume);
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id fsmc_nand_id_table[] = {
+        { .compatible = "st,spear600-fsmc-nand" },
+        {}
 };
+MODULE_DEVICE_TABLE(of, fsmc_nand_id_table);
 #endif
 
 static struct platform_driver fsmc_nand_driver = {
@@ -817,6 +1242,7 @@ static struct platform_driver fsmc_nand_driver = {
         .driver = {
                 .owner = THIS_MODULE,
                 .name = "fsmc-nand",
+                .of_match_table = of_match_ptr(fsmc_nand_id_table),
 #ifdef CONFIG_PM
                 .pm = &fsmc_nand_pm_ops,
 #endif
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
index 590dd5cceed6..e8ea7107932e 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
@@ -848,7 +848,10 @@ int gpmi_send_command(struct gpmi_nand_data *this)
 
         sg_init_one(sgl, this->cmd_buffer, this->command_length);
         dma_map_sg(this->dev, sgl, 1, DMA_TO_DEVICE);
-        desc = dmaengine_prep_slave_sg(channel, sgl, 1, DMA_MEM_TO_DEV, 1);
+        desc = dmaengine_prep_slave_sg(channel,
+                                sgl, 1, DMA_MEM_TO_DEV,
+                                DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+
         if (!desc) {
                 pr_err("step 2 error\n");
                 return -1;
@@ -889,7 +892,8 @@ int gpmi_send_data(struct gpmi_nand_data *this)
         /* [2] send DMA request */
         prepare_data_dma(this, DMA_TO_DEVICE);
         desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
-                                                1, DMA_MEM_TO_DEV, 1);
+                                        1, DMA_MEM_TO_DEV,
+                                        DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         if (!desc) {
                 pr_err("step 2 error\n");
                 return -1;
@@ -925,7 +929,8 @@ int gpmi_read_data(struct gpmi_nand_data *this)
         /* [2] : send DMA request */
         prepare_data_dma(this, DMA_FROM_DEVICE);
         desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
-                                        1, DMA_DEV_TO_MEM, 1);
+                                        1, DMA_DEV_TO_MEM,
+                                        DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         if (!desc) {
                 pr_err("step 2 error\n");
                 return -1;
@@ -970,8 +975,10 @@ int gpmi_send_page(struct gpmi_nand_data *this,
         pio[4] = payload;
         pio[5] = auxiliary;
 
-        desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio,
-                                        ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
+        desc = dmaengine_prep_slave_sg(channel,
+                                        (struct scatterlist *)pio,
+                                        ARRAY_SIZE(pio), DMA_TRANS_NONE,
+                                        DMA_CTRL_ACK);
         if (!desc) {
                 pr_err("step 2 error\n");
                 return -1;
@@ -1035,7 +1042,8 @@ int gpmi_read_page(struct gpmi_nand_data *this,
         pio[5] = auxiliary;
         desc = dmaengine_prep_slave_sg(channel,
                                         (struct scatterlist *)pio,
-                                        ARRAY_SIZE(pio), DMA_TRANS_NONE, 1);
+                                        ARRAY_SIZE(pio), DMA_TRANS_NONE,
+                                        DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         if (!desc) {
                 pr_err("step 2 error\n");
                 return -1;
@@ -1052,9 +1060,11 @@ int gpmi_read_page(struct gpmi_nand_data *this,
                 | BF_GPMI_CTRL0_ADDRESS(address)
                 | BF_GPMI_CTRL0_XFER_COUNT(geo->page_size);
         pio[1] = 0;
+        pio[2] = 0; /* clear GPMI_HW_GPMI_ECCCTRL, disable the BCH. */
         desc = dmaengine_prep_slave_sg(channel,
-                                (struct scatterlist *)pio, 2,
-                                DMA_TRANS_NONE, 1);
+                                (struct scatterlist *)pio, 3,
+                                DMA_TRANS_NONE,
+                                DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         if (!desc) {
                 pr_err("step 3 error\n");
                 return -1;
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index 493ec2fcf97f..75b1dde16358 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -1124,7 +1124,7 @@ static int gpmi_block_markbad(struct mtd_info *mtd, loff_t ofs)
                 chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
 
         /* Do we have a flash based bad block table ? */
-        if (chip->options & NAND_BBT_USE_FLASH)
+        if (chip->bbt_options & NAND_BBT_USE_FLASH)
                 ret = nand_update_bbt(mtd, ofs);
         else {
                 chipnr = (int)(ofs >> chip->chip_shift);
@@ -1155,7 +1155,7 @@ static int gpmi_block_markbad(struct mtd_info *mtd, loff_t ofs)
         return ret;
 }
 
-static int __devinit nand_boot_set_geometry(struct gpmi_nand_data *this)
+static int nand_boot_set_geometry(struct gpmi_nand_data *this)
 {
         struct boot_rom_geometry *geometry = &this->rom_geometry;
 
@@ -1182,7 +1182,7 @@ static int __devinit nand_boot_set_geometry(struct gpmi_nand_data *this)
 }
 
 static const char  *fingerprint = "STMP";
-static int __devinit mx23_check_transcription_stamp(struct gpmi_nand_data *this)
+static int mx23_check_transcription_stamp(struct gpmi_nand_data *this)
 {
         struct boot_rom_geometry *rom_geo = &this->rom_geometry;
         struct device *dev = this->dev;
@@ -1239,7 +1239,7 @@ static int __devinit mx23_check_transcription_stamp(struct gpmi_nand_data *this)
 }
 
 /* Writes a transcription stamp. */
-static int __devinit mx23_write_transcription_stamp(struct gpmi_nand_data *this)
+static int mx23_write_transcription_stamp(struct gpmi_nand_data *this)
 {
         struct device *dev = this->dev;
         struct boot_rom_geometry *rom_geo = &this->rom_geometry;
@@ -1322,7 +1322,7 @@ static int __devinit mx23_write_transcription_stamp(struct gpmi_nand_data *this)
         return 0;
 }
 
-static int __devinit mx23_boot_init(struct gpmi_nand_data  *this)
+static int mx23_boot_init(struct gpmi_nand_data  *this)
 {
         struct device *dev = this->dev;
         struct nand_chip *chip = &this->nand;
@@ -1391,7 +1391,7 @@ static int __devinit mx23_boot_init(struct gpmi_nand_data  *this)
         return 0;
 }
 
-static int __devinit nand_boot_init(struct gpmi_nand_data  *this)
+static int nand_boot_init(struct gpmi_nand_data  *this)
 {
         nand_boot_set_geometry(this);
 
@@ -1401,7 +1401,7 @@ static int __devinit nand_boot_init(struct gpmi_nand_data  *this)
         return 0;
 }
 
-static int __devinit gpmi_set_geometry(struct gpmi_nand_data *this)
+static int gpmi_set_geometry(struct gpmi_nand_data *this)
 {
         int ret;
 
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.h b/drivers/mtd/nand/gpmi-nand/gpmi-nand.h
index e023bccb7781..ec6180d4ff8f 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.h
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.h
@@ -20,7 +20,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
-#include <mach/dma.h>
+#include <linux/fsl/mxs-dma.h>
 
 struct resources {
         void          *gpmi_regs;
diff --git a/drivers/mtd/nand/h1910.c b/drivers/mtd/nand/h1910.c
index 5dc6f0d92f1a..11e487813428 100644
--- a/drivers/mtd/nand/h1910.c
+++ b/drivers/mtd/nand/h1910.c
@@ -135,8 +135,8 @@ static int __init h1910_init(void)
         }
 
         /* Register the partitions */
-        mtd_device_parse_register(h1910_nand_mtd, NULL, 0,
-                        partition_info, NUM_PARTITIONS);
+        mtd_device_parse_register(h1910_nand_mtd, NULL, NULL, partition_info,
+                                  NUM_PARTITIONS);
 
         /* Return happy */
         return 0;
diff --git a/drivers/mtd/nand/jz4740_nand.c b/drivers/mtd/nand/jz4740_nand.c
index ac3b9f255e00..e4147e8acb7c 100644
--- a/drivers/mtd/nand/jz4740_nand.c
+++ b/drivers/mtd/nand/jz4740_nand.c
@@ -332,6 +332,11 @@ static int __devinit jz_nand_probe(struct platform_device *pdev)
         chip->ecc.mode          = NAND_ECC_HW_OOB_FIRST;
         chip->ecc.size          = 512;
         chip->ecc.bytes         = 9;
+        chip->ecc.strength      = 2;
+        /*
+         * FIXME: ecc_strength value of 2 bits per 512 bytes of data is a
+         * conservative guess, given 9 ecc bytes and reed-solomon alg.
+         */
 
         if (pdata)
                 chip->ecc.layout = pdata->ecc_layout;
@@ -367,9 +372,9 @@ static int __devinit jz_nand_probe(struct platform_device *pdev)
                 goto err_gpio_free;
         }
 
-        ret = mtd_device_parse_register(mtd, NULL, 0,
-                        pdata ? pdata->partitions : NULL,
-                        pdata ? pdata->num_partitions : 0);
+        ret = mtd_device_parse_register(mtd, NULL, NULL,
+                                        pdata ? pdata->partitions : NULL,
+                                        pdata ? pdata->num_partitions : 0);
 
         if (ret) {
                 dev_err(&pdev->dev, "Failed to add mtd device\n");
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 74a43b818d0e..cc0678a967c1 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -1225,9 +1225,16 @@ static int __init mxcnd_probe(struct platform_device *pdev)
                 goto escan;
         }
 
+        if (this->ecc.mode == NAND_ECC_HW) {
+                if (nfc_is_v1())
+                        this->ecc.strength = 1;
+                else
+                        this->ecc.strength = (host->eccsize == 4) ? 4 : 8;
+        }
+
         /* Register the partitions */
-        mtd_device_parse_register(mtd, part_probes, 0,
-                        pdata->parts, pdata->nr_parts);
+        mtd_device_parse_register(mtd, part_probes, NULL, pdata->parts,
+                                  pdata->nr_parts);
 
         platform_set_drvdata(pdev, host);
 
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 8a393f9e6027..47b19c0bb070 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -123,12 +123,6 @@ static int check_offs_len(struct mtd_info *mtd,
                 ret = -EINVAL;
         }
 
-        /* Do not allow past end of device */
-        if (ofs + len > mtd->size) {
-                pr_debug("%s: past end of device\n", __func__);
-                ret = -EINVAL;
-        }
-
         return ret;
 }
 
@@ -338,7 +332,7 @@ static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
  */
 static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
 {
-        int page, chipnr, res = 0;
+        int page, chipnr, res = 0, i = 0;
         struct nand_chip *chip = mtd->priv;
         u16 bad;
 
@@ -356,23 +350,29 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
                 chip->select_chip(mtd, chipnr);
         }
 
-        if (chip->options & NAND_BUSWIDTH_16) {
-                chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos & 0xFE,
-                              page);
-                bad = cpu_to_le16(chip->read_word(mtd));
-                if (chip->badblockpos & 0x1)
-                        bad >>= 8;
-                else
-                        bad &= 0xFF;
-        } else {
-                chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos, page);
-                bad = chip->read_byte(mtd);
-        }
+        do {
+                if (chip->options & NAND_BUSWIDTH_16) {
+                        chip->cmdfunc(mtd, NAND_CMD_READOOB,
+                                        chip->badblockpos & 0xFE, page);
+                        bad = cpu_to_le16(chip->read_word(mtd));
+                        if (chip->badblockpos & 0x1)
+                                bad >>= 8;
+                        else
+                                bad &= 0xFF;
+                } else {
+                        chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos,
+                                        page);
+                        bad = chip->read_byte(mtd);
+                }
 
-        if (likely(chip->badblockbits == 8))
-                res = bad != 0xFF;
-        else
-                res = hweight8(bad) < chip->badblockbits;
+                if (likely(chip->badblockbits == 8))
+                        res = bad != 0xFF;
+                else
+                        res = hweight8(bad) < chip->badblockbits;
+                ofs += mtd->writesize;
+                page = (int)(ofs >> chip->page_shift) & chip->pagemask;
+                i++;
+        } while (!res && i < 2 && (chip->bbt_options & NAND_BBT_SCAN2NDPAGE));
 
         if (getchip)
                 nand_release_device(mtd);
@@ -386,51 +386,79 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
  * @ofs: offset from device start
  *
  * This is the default implementation, which can be overridden by a hardware
- * specific driver.
+ * specific driver. We try operations in the following order, according to our
+ * bbt_options (NAND_BBT_NO_OOB_BBM and NAND_BBT_USE_FLASH):
+ *  (1) erase the affected block, to allow OOB marker to be written cleanly
+ *  (2) update in-memory BBT
+ *  (3) write bad block marker to OOB area of affected block
+ *  (4) update flash-based BBT
+ * Note that we retain the first error encountered in (3) or (4), finish the
+ * procedures, and dump the error in the end.
 */
 static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
 {
         struct nand_chip *chip = mtd->priv;
         uint8_t buf[2] = { 0, 0 };
-        int block, ret, i = 0;
+        int block, res, ret = 0, i = 0;
+        int write_oob = !(chip->bbt_options & NAND_BBT_NO_OOB_BBM);
 
-        if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
-                ofs += mtd->erasesize - mtd->writesize;
+        if (write_oob) {
+                struct erase_info einfo;
+
+                /* Attempt erase before marking OOB */
+                memset(&einfo, 0, sizeof(einfo));
+                einfo.mtd = mtd;
+                einfo.addr = ofs;
+                einfo.len = 1 << chip->phys_erase_shift;
+                nand_erase_nand(mtd, &einfo, 0);
+        }
 
         /* Get block number */
         block = (int)(ofs >> chip->bbt_erase_shift);
+        /* Mark block bad in memory-based BBT */
         if (chip->bbt)
                 chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
 
-        /* Do we have a flash based bad block table? */
-        if (chip->bbt_options & NAND_BBT_USE_FLASH)
-                ret = nand_update_bbt(mtd, ofs);
-        else {
+        /* Write bad block marker to OOB */
+        if (write_oob) {
                 struct mtd_oob_ops ops;
+                loff_t wr_ofs = ofs;
 
                 nand_get_device(chip, mtd, FL_WRITING);
 
-                /*
-                 * Write to first two pages if necessary. If we write to more
-                 * than one location, the first error encountered quits the
-                 * procedure. We write two bytes per location, so we dont have
-                 * to mess with 16 bit access.
-                 */
-                ops.len = ops.ooblen = 2;
                 ops.datbuf = NULL;
                 ops.oobbuf = buf;
-                ops.ooboffs = chip->badblockpos & ~0x01;
+                ops.ooboffs = chip->badblockpos;
+                if (chip->options & NAND_BUSWIDTH_16) {
+                        ops.ooboffs &= ~0x01;
+                        ops.len = ops.ooblen = 2;
+                } else {
+                        ops.len = ops.ooblen = 1;
+                }
                 ops.mode = MTD_OPS_PLACE_OOB;
+
+                /* Write to first/last page(s) if necessary */
+                if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
+                        wr_ofs += mtd->erasesize - mtd->writesize;
                 do {
-                        ret = nand_do_write_oob(mtd, ofs, &ops);
+                        res = nand_do_write_oob(mtd, wr_ofs, &ops);
+                        if (!ret)
+                                ret = res;
 
                         i++;
-                        ofs += mtd->writesize;
-                } while (!ret && (chip->bbt_options & NAND_BBT_SCAN2NDPAGE) &&
-                                i < 2);
+                        wr_ofs += mtd->writesize;
+                } while ((chip->bbt_options & NAND_BBT_SCAN2NDPAGE) && i < 2);
 
                 nand_release_device(mtd);
         }
+
+        /* Update flash-based bad block table */
+        if (chip->bbt_options & NAND_BBT_USE_FLASH) {
+                res = nand_update_bbt(mtd, ofs);
+                if (!ret)
+                        ret = res;
+        }
+
         if (!ret)
                 mtd->ecc_stats.badblocks++;
 
@@ -1586,25 +1614,14 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len,
         struct mtd_oob_ops ops;
         int ret;
 
-        /* Do not allow reads past end of device */
-        if ((from + len) > mtd->size)
-                return -EINVAL;
-        if (!len)
-                return 0;
-
         nand_get_device(chip, mtd, FL_READING);
-
         ops.len = len;
         ops.datbuf = buf;
         ops.oobbuf = NULL;
         ops.mode = 0;
-
         ret = nand_do_read_ops(mtd, from, &ops);
-
         *retlen = ops.retlen;
-
         nand_release_device(mtd);
-
         return ret;
 }
 
@@ -2293,12 +2310,6 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len,
         struct mtd_oob_ops ops;
         int ret;
 
-        /* Do not allow reads past end of device */
-        if ((to + len) > mtd->size)
-                return -EINVAL;
-        if (!len)
-                return 0;
-
         /* Wait for the device to get ready */
         panic_nand_wait(mtd, chip, 400);
 
@@ -2333,25 +2344,14 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
         struct mtd_oob_ops ops;
         int ret;
 
-        /* Do not allow reads past end of device */
-        if ((to + len) > mtd->size)
-                return -EINVAL;
-        if (!len)
-                return 0;
-
         nand_get_device(chip, mtd, FL_WRITING);
-
         ops.len = len;
         ops.datbuf = (uint8_t *)buf;
         ops.oobbuf = NULL;
         ops.mode = 0;
-
         ret = nand_do_write_ops(mtd, to, &ops);
-
         *retlen = ops.retlen;
-
         nand_release_device(mtd);
-
         return ret;
 }
 
@@ -2550,8 +2550,6 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
         if (check_offs_len(mtd, instr->addr, instr->len))
                 return -EINVAL;
 
-        instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
-
         /* Grab the lock and see if the device is available */
         nand_get_device(chip, mtd, FL_ERASING);
 
@@ -2715,10 +2713,6 @@ static void nand_sync(struct mtd_info *mtd)
  */
 static int nand_block_isbad(struct mtd_info *mtd, loff_t offs)
 {
-        /* Check for invalid offset */
-        if (offs > mtd->size)
-                return -EINVAL;
-
         return nand_block_checkbad(mtd, offs, 1, 0);
 }
 
@@ -2857,7 +2851,6 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
                 chip->read_byte(mtd) != 'F' || chip->read_byte(mtd) != 'I')
                 return 0;
 
-        pr_info("ONFI flash detected\n");
         chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1);
         for (i = 0; i < 3; i++) {
                 chip->read_buf(mtd, (uint8_t *)p, sizeof(*p));
@@ -2898,7 +2891,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
         mtd->writesize = le32_to_cpu(p->byte_per_page);
         mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize;
         mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page);
-        chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize;
+        chip->chipsize = le32_to_cpu(p->blocks_per_lun);
+        chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count;
         *busw = 0;
         if (le16_to_cpu(p->features) & 1)
                 *busw = NAND_BUSWIDTH_16;
@@ -2907,6 +2901,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
         chip->options |= (NAND_NO_READRDY |
                         NAND_NO_AUTOINCR) & NAND_CHIPOPTIONS_MSK;
 
+        pr_info("ONFI flash detected\n");
         return 1;
 }
 
@@ -3238,6 +3233,10 @@ int nand_scan_tail(struct mtd_info *mtd)
         int i;
         struct nand_chip *chip = mtd->priv;
 
+        /* New bad blocks should be marked in OOB, flash-based BBT, or both */
+        BUG_ON((chip->bbt_options & NAND_BBT_NO_OOB_BBM) &&
+                        !(chip->bbt_options & NAND_BBT_USE_FLASH));
+
         if (!(chip->options & NAND_OWN_BUFFERS))
                 chip->buffers = kmalloc(sizeof(*chip->buffers), GFP_KERNEL);
         if (!chip->buffers)
@@ -3350,6 +3349,7 @@ int nand_scan_tail(struct mtd_info *mtd)
                 if (!chip->ecc.size)
                         chip->ecc.size = 256;
                 chip->ecc.bytes = 3;
+                chip->ecc.strength = 1;
                 break;
 
         case NAND_ECC_SOFT_BCH:
@@ -3384,6 +3384,8 @@ int nand_scan_tail(struct mtd_info *mtd)
                         pr_warn("BCH ECC initialization failed!\n");
                         BUG();
                 }
+                chip->ecc.strength =
+                        chip->ecc.bytes*8 / fls(8*chip->ecc.size);
                 break;
 
         case NAND_ECC_NONE:
@@ -3397,6 +3399,7 @@ int nand_scan_tail(struct mtd_info *mtd)
                 chip->ecc.write_oob = nand_write_oob_std;
                 chip->ecc.size = mtd->writesize;
                 chip->ecc.bytes = 0;
+                chip->ecc.strength = 0;
                 break;
 
         default:
@@ -3461,25 +3464,26 @@ int nand_scan_tail(struct mtd_info *mtd)
         mtd->type = MTD_NANDFLASH;
         mtd->flags = (chip->options & NAND_ROM) ? MTD_CAP_ROM :
                                                 MTD_CAP_NANDFLASH;
-        mtd->erase = nand_erase;
-        mtd->point = NULL;
-        mtd->unpoint = NULL;
-        mtd->read = nand_read;
-        mtd->write = nand_write;
-        mtd->panic_write = panic_nand_write;
-        mtd->read_oob = nand_read_oob;
-        mtd->write_oob = nand_write_oob;
-        mtd->sync = nand_sync;
-        mtd->lock = NULL;
-        mtd->unlock = NULL;
-        mtd->suspend = nand_suspend;
-        mtd->resume = nand_resume;
-        mtd->block_isbad = nand_block_isbad;
-        mtd->block_markbad = nand_block_markbad;
+        mtd->_erase = nand_erase;
+        mtd->_point = NULL;
+        mtd->_unpoint = NULL;
+        mtd->_read = nand_read;
+        mtd->_write = nand_write;
+        mtd->_panic_write = panic_nand_write;
+        mtd->_read_oob = nand_read_oob;
+        mtd->_write_oob = nand_write_oob;
+        mtd->_sync = nand_sync;
+        mtd->_lock = NULL;
+        mtd->_unlock = NULL;
+        mtd->_suspend = nand_suspend;
+        mtd->_resume = nand_resume;
+        mtd->_block_isbad = nand_block_isbad;
+        mtd->_block_markbad = nand_block_markbad;
         mtd->writebufsize = mtd->writesize;
 
-        /* propagate ecc.layout to mtd_info */
+        /* propagate ecc info to mtd_info */
         mtd->ecclayout = chip->ecc.layout;
+        mtd->ecc_strength = chip->ecc.strength * chip->ecc.steps;
 
         /* Check, if we should skip the bad block table scan */
         if (chip->options & NAND_SKIP_BBTSCAN)
diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c
index ec688548c880..2b6f632cf274 100644
--- a/drivers/mtd/nand/ndfc.c
+++ b/drivers/mtd/nand/ndfc.c
@@ -179,6 +179,7 @@ static int ndfc_chip_init(struct ndfc_controller *ndfc,
         chip->ecc.mode = NAND_ECC_HW;
         chip->ecc.size = 256;
         chip->ecc.bytes = 3;
+        chip->ecc.strength = 1;
         chip->priv = ndfc;
 
         ndfc->mtd.priv = chip;
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index b3a883e2a22f..c2b0bba9d8b3 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1058,6 +1058,7 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
                 (pdata->ecc_opt == OMAP_ECC_HAMMING_CODE_HW_ROMCODE)) {
                 info->nand.ecc.bytes            = 3;
                 info->nand.ecc.size             = 512;
+                info->nand.ecc.strength         = 1;
                 info->nand.ecc.calculate        = omap_calculate_ecc;
                 info->nand.ecc.hwctl            = omap_enable_hwecc;
                 info->nand.ecc.correct          = omap_correct_data;
@@ -1101,8 +1102,8 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
                 goto out_release_mem_region;
         }
 
-        mtd_device_parse_register(&info->mtd, NULL, 0,
-                        pdata->parts, pdata->nr_parts);
+        mtd_device_parse_register(&info->mtd, NULL, NULL, pdata->parts,
+                                  pdata->nr_parts);
 
         platform_set_drvdata(pdev, &info->mtd);
 
diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c
index 29f505adaf84..1d3bfb26080c 100644
--- a/drivers/mtd/nand/orion_nand.c
+++ b/drivers/mtd/nand/orion_nand.c
@@ -129,8 +129,8 @@ static int __init orion_nand_probe(struct platform_device *pdev)
         }
 
         mtd->name = "orion_nand";
-        ret = mtd_device_parse_register(mtd, NULL, 0,
-                        board->parts, board->nr_parts);
+        ret = mtd_device_parse_register(mtd, NULL, NULL, board->parts,
+                                        board->nr_parts);
         if (ret) {
                 nand_release(mtd);
                 goto no_dev;
diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c
index 7f2da6953357..6404e6e81b10 100644
--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -99,8 +99,9 @@ static int __devinit plat_nand_probe(struct platform_device *pdev)
         }
 
         err = mtd_device_parse_register(&data->mtd,
-                        pdata->chip.part_probe_types, 0,
-                        pdata->chip.partitions, pdata->chip.nr_partitions);
+                                        pdata->chip.part_probe_types, NULL,
+                                        pdata->chip.partitions,
+                                        pdata->chip.nr_partitions);
 
         if (!err)
                 return err;
diff --git a/drivers/mtd/nand/ppchameleonevb.c b/drivers/mtd/nand/ppchameleonevb.c
index 7e52af51a198..0ddd90e5788f 100644
--- a/drivers/mtd/nand/ppchameleonevb.c
+++ b/drivers/mtd/nand/ppchameleonevb.c
@@ -275,11 +275,10 @@ static int __init ppchameleonevb_init(void)
         ppchameleon_mtd->name = "ppchameleon-nand";
 
         /* Register the partitions */
-        mtd_device_parse_register(ppchameleon_mtd, NULL, 0,
-                        ppchameleon_mtd->size == NAND_SMALL_SIZE ?
-                                partition_info_me :
-                                partition_info_hi,
-                        NUM_PARTITIONS);
+        mtd_device_parse_register(ppchameleon_mtd, NULL, NULL,
+                                  ppchameleon_mtd->size == NAND_SMALL_SIZE ?
+                                        partition_info_me : partition_info_hi,
+                                  NUM_PARTITIONS);
 
  nand_evb_init:
         /****************************
@@ -365,11 +364,10 @@ static int __init ppchameleonevb_init(void)
         ppchameleonevb_mtd->name = NAND_EVB_MTD_NAME;
 
         /* Register the partitions */
-        mtd_device_parse_register(ppchameleonevb_mtd, NULL, 0,
-                        ppchameleon_mtd->size == NAND_SMALL_SIZE ?
-                                partition_info_me :
-                                partition_info_hi,
-                        NUM_PARTITIONS);
+        mtd_device_parse_register(ppchameleonevb_mtd, NULL, NULL,
+                                  ppchameleon_mtd->size == NAND_SMALL_SIZE ?
+                                  partition_info_me : partition_info_hi,
+                                  NUM_PARTITIONS);
 
         /* Return happy */
         return 0;
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 5c3d719c37e6..def50caa6f84 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1002,6 +1002,7 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
 KEEP_CONFIG:
         chip->ecc.mode = NAND_ECC_HW;
         chip->ecc.size = host->page_size;
+        chip->ecc.strength = 1;
 
         chip->options = NAND_NO_AUTOINCR;
         chip->options |= NAND_NO_READRDY;
@@ -1228,8 +1229,9 @@ static int pxa3xx_nand_probe(struct platform_device *pdev)
                         continue;
                 }
 
-                ret = mtd_device_parse_register(info->host[cs]->mtd, NULL, 0,
-                                pdata->parts[cs], pdata->nr_parts[cs]);
+                ret = mtd_device_parse_register(info->host[cs]->mtd, NULL,
+                                                NULL, pdata->parts[cs],
+                                                pdata->nr_parts[cs]);
                 if (!ret)
                         probe_success = 1;
         }
diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c
index 769a4e096b3c..c2040187c813 100644
--- a/drivers/mtd/nand/r852.c
+++ b/drivers/mtd/nand/r852.c
@@ -891,6 +891,7 @@ int  r852_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
         chip->ecc.mode = NAND_ECC_HW_SYNDROME;
         chip->ecc.size = R852_DMA_LEN;
         chip->ecc.bytes = SM_OOB_SIZE;
+        chip->ecc.strength = 2;
         chip->ecc.hwctl = r852_ecc_hwctl;
         chip->ecc.calculate = r852_ecc_calculate;
         chip->ecc.correct = r852_ecc_correct;
diff --git a/drivers/mtd/nand/rtc_from4.c b/drivers/mtd/nand/rtc_from4.c
index f309addc2fa0..e55b5cfbe145 100644
--- a/drivers/mtd/nand/rtc_from4.c
+++ b/drivers/mtd/nand/rtc_from4.c
@@ -527,6 +527,7 @@ static int __init rtc_from4_init(void)
         this->ecc.mode = NAND_ECC_HW_SYNDROME;
         this->ecc.size = 512;
         this->ecc.bytes = 8;
+        this->ecc.strength = 3;
         /* return the status of extra status and ECC checks */
         this->errstat = rtc_from4_errstat;
         /* set the nand_oobinfo to support FPGA H/W error detection */
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index 868685db6712..91121f33f743 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -751,8 +751,8 @@ static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info,
         if (set)
                 mtd->mtd.name = set->name;
 
-        return mtd_device_parse_register(&mtd->mtd, NULL, 0,
-                        set->partitions, set->nr_partitions);
+        return mtd_device_parse_register(&mtd->mtd, NULL, NULL,
+                                         set->partitions, set->nr_partitions);
 }
 
 /**
@@ -823,6 +823,7 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
                 chip->ecc.calculate = s3c2410_nand_calculate_ecc;
                 chip->ecc.correct   = s3c2410_nand_correct_data;
                 chip->ecc.mode      = NAND_ECC_HW;
+                chip->ecc.strength  = 1;
 
                 switch (info->cpu_type) {
                 case TYPE_S3C2410:
diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index 93b1f74321c2..e9b2b260de3a 100644
--- a/drivers/mtd/nand/sh_flctl.c
+++ b/drivers/mtd/nand/sh_flctl.c
@@ -26,6 +26,7 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 
 #include <linux/mtd/mtd.h>
@@ -283,7 +284,7 @@ static void write_fiforeg(struct sh_flctl *flctl, int rlen, int offset)
 static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_val)
 {
         struct sh_flctl *flctl = mtd_to_flctl(mtd);
-        uint32_t flcmncr_val = readl(FLCMNCR(flctl)) & ~SEL_16BIT;
+        uint32_t flcmncr_val = flctl->flcmncr_base & ~SEL_16BIT;
         uint32_t flcmdcr_val, addr_len_bytes = 0;
 
         /* Set SNAND bit if page size is 2048byte */
@@ -303,6 +304,7 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va
                 break;
         case NAND_CMD_READ0:
         case NAND_CMD_READOOB:
+        case NAND_CMD_RNDOUT:
                 addr_len_bytes = flctl->rw_ADRCNT;
                 flcmdcr_val |= CDSRC_E;
                 if (flctl->chip.options & NAND_BUSWIDTH_16)
@@ -320,6 +322,7 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va
                 break;
         case NAND_CMD_READID:
                 flcmncr_val &= ~SNAND_E;
+                flcmdcr_val |= CDSRC_E;
                 addr_len_bytes = ADRCNT_1;
                 break;
         case NAND_CMD_STATUS:
@@ -513,6 +516,8 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
         struct sh_flctl *flctl = mtd_to_flctl(mtd);
         uint32_t read_cmd = 0;
 
+        pm_runtime_get_sync(&flctl->pdev->dev);
+
         flctl->read_bytes = 0;
         if (command != NAND_CMD_PAGEPROG)
                 flctl->index = 0;
@@ -525,7 +530,6 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
                         execmd_read_page_sector(mtd, page_addr);
                         break;
                 }
-                empty_fifo(flctl);
                 if (flctl->page_size)
                         set_cmd_regs(mtd, command, (NAND_CMD_READSTART << 8)
                                 | command);
@@ -547,7 +551,6 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
                         break;
                 }
 
-                empty_fifo(flctl);
                 if (flctl->page_size) {
                         set_cmd_regs(mtd, command, (NAND_CMD_READSTART << 8)
                                 | NAND_CMD_READ0);
@@ -559,15 +562,35 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
                 flctl->read_bytes = mtd->oobsize;
                 goto read_normal_exit;
 
+        case NAND_CMD_RNDOUT:
+                if (flctl->hwecc)
+                        break;
+
+                if (flctl->page_size)
+                        set_cmd_regs(mtd, command, (NAND_CMD_RNDOUTSTART << 8)
+                                | command);
+                else
+                        set_cmd_regs(mtd, command, command);
+
+                set_addr(mtd, column, 0);
+
+                flctl->read_bytes = mtd->writesize + mtd->oobsize - column;
+                goto read_normal_exit;
+
         case NAND_CMD_READID:
-                empty_fifo(flctl);
                 set_cmd_regs(mtd, command, command);
-                set_addr(mtd, 0, 0);
 
-                flctl->read_bytes = 4;
+                /* READID is always performed using an 8-bit bus */
+                if (flctl->chip.options & NAND_BUSWIDTH_16)
+                        column <<= 1;
+                set_addr(mtd, column, 0);
+
+                flctl->read_bytes = 8;
                 writel(flctl->read_bytes, FLDTCNTR(flctl)); /* set read size */
+                empty_fifo(flctl);
                 start_translation(flctl);
-                read_datareg(flctl, 0); /* read and end */
+                read_fiforeg(flctl, flctl->read_bytes, 0);
+                wait_completion(flctl);
                 break;
 
         case NAND_CMD_ERASE1:
@@ -650,29 +673,55 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
         default:
                 break;
         }
-        return;
+        goto runtime_exit;
 
 read_normal_exit:
         writel(flctl->read_bytes, FLDTCNTR(flctl));     /* set read size */
+        empty_fifo(flctl);
         start_translation(flctl);
         read_fiforeg(flctl, flctl->read_bytes, 0);
         wait_completion(flctl);
+runtime_exit:
+        pm_runtime_put_sync(&flctl->pdev->dev);
         return;
 }
 
 static void flctl_select_chip(struct mtd_info *mtd, int chipnr)
 {
         struct sh_flctl *flctl = mtd_to_flctl(mtd);
-        uint32_t flcmncr_val = readl(FLCMNCR(flctl));
+        int ret;
 
         switch (chipnr) {
         case -1:
-                flcmncr_val &= ~CE0_ENABLE;
-                writel(flcmncr_val, FLCMNCR(flctl));
+                flctl->flcmncr_base &= ~CE0_ENABLE;
+
+                pm_runtime_get_sync(&flctl->pdev->dev);
+                writel(flctl->flcmncr_base, FLCMNCR(flctl));
+
+                if (flctl->qos_request) {
+                        dev_pm_qos_remove_request(&flctl->pm_qos);
+                        flctl->qos_request = 0;
+                }
+
+                pm_runtime_put_sync(&flctl->pdev->dev);
                 break;
         case 0:
-                flcmncr_val |= CE0_ENABLE;
-                writel(flcmncr_val, FLCMNCR(flctl));
+                flctl->flcmncr_base |= CE0_ENABLE;
+
+                if (!flctl->qos_request) {
+                        ret = dev_pm_qos_add_request(&flctl->pdev->dev,
+                                                        &flctl->pm_qos, 100);
+                        if (ret < 0)
+                                dev_err(&flctl->pdev->dev,
+                                        "PM QoS request failed: %d\n", ret);
+                        flctl->qos_request = 1;
+                }
+
+                if (flctl->holden) {
+                        pm_runtime_get_sync(&flctl->pdev->dev);
+                        writel(HOLDEN, FLHOLDCR(flctl));
+                        pm_runtime_put_sync(&flctl->pdev->dev);
+                }
                 break;
         default:
                 BUG();
@@ -730,11 +779,6 @@ static int flctl_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
         return 0;
 }
 
-static void flctl_register_init(struct sh_flctl *flctl, unsigned long val)
-{
-        writel(val, FLCMNCR(flctl));
-}
-
 static int flctl_chip_init_tail(struct mtd_info *mtd)
 {
         struct sh_flctl *flctl = mtd_to_flctl(mtd);
@@ -781,13 +825,13 @@ static int flctl_chip_init_tail(struct mtd_info *mtd)
 
                 chip->ecc.size = 512;
                 chip->ecc.bytes = 10;
+                chip->ecc.strength = 4;
                 chip->ecc.read_page = flctl_read_page_hwecc;
                 chip->ecc.write_page = flctl_write_page_hwecc;
                 chip->ecc.mode = NAND_ECC_HW;
 
                 /* 4 symbols ECC enabled */
-                writel(readl(FLCMNCR(flctl)) | _4ECCEN | ECCPOS2 | ECCPOS_02,
-                                FLCMNCR(flctl));
+                flctl->flcmncr_base |= _4ECCEN | ECCPOS2 | ECCPOS_02;
         } else {
                 chip->ecc.mode = NAND_ECC_SOFT;
         }
@@ -819,13 +863,13 @@ static int __devinit flctl_probe(struct platform_device *pdev)
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!res) {
                 dev_err(&pdev->dev, "failed to get I/O memory\n");
-                goto err;
+                goto err_iomap;
         }
 
         flctl->reg = ioremap(res->start, resource_size(res));
         if (flctl->reg == NULL) {
                 dev_err(&pdev->dev, "failed to remap I/O memory\n");
-                goto err;
+                goto err_iomap;
         }
 
         platform_set_drvdata(pdev, flctl);
@@ -833,9 +877,9 @@ static int __devinit flctl_probe(struct platform_device *pdev)
         nand = &flctl->chip;
         flctl_mtd->priv = nand;
         flctl->pdev = pdev;
+        flctl->flcmncr_base = pdata->flcmncr_val;
         flctl->hwecc = pdata->has_hwecc;
-
-        flctl_register_init(flctl, pdata->flcmncr_val);
+        flctl->holden = pdata->use_holden;
 
         nand->options = NAND_NO_AUTOINCR;
 
@@ -855,23 +899,28 @@ static int __devinit flctl_probe(struct platform_device *pdev)
                 nand->read_word = flctl_read_word;
         }
 
+        pm_runtime_enable(&pdev->dev);
+        pm_runtime_resume(&pdev->dev);
+
         ret = nand_scan_ident(flctl_mtd, 1, NULL);
         if (ret)
-                goto err;
+                goto err_chip;
 
         ret = flctl_chip_init_tail(flctl_mtd);
         if (ret)
-                goto err;
+                goto err_chip;
 
         ret = nand_scan_tail(flctl_mtd);
         if (ret)
-                goto err;
+                goto err_chip;
 
         mtd_device_register(flctl_mtd, pdata->parts, pdata->nr_parts);
 
         return 0;
 
-err:
+err_chip:
+        pm_runtime_disable(&pdev->dev);
+err_iomap:
         kfree(flctl);
         return ret;
 }
@@ -881,6 +930,7 @@ static int __devexit flctl_remove(struct platform_device *pdev)
         struct sh_flctl *flctl = platform_get_drvdata(pdev);
 
         nand_release(&flctl->mtd);
+        pm_runtime_disable(&pdev->dev);
         kfree(flctl);
 
         return 0;
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index b175c0fd8b93..3421e3762a5a 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -167,6 +167,7 @@ static int __devinit sharpsl_nand_probe(struct platform_device *pdev)
         this->ecc.mode = NAND_ECC_HW;
         this->ecc.size = 256;
         this->ecc.bytes = 3;
+        this->ecc.strength = 1;
         this->badblock_pattern = data->badblock_pattern;
         this->ecc.layout = data->ecc_layout;
         this->ecc.hwctl = sharpsl_nand_enable_hwecc;
@@ -181,8 +182,8 @@ static int __devinit sharpsl_nand_probe(struct platform_device *pdev)
         /* Register the partitions */
         sharpsl->mtd.name = "sharpsl-nand";
 
-        err = mtd_device_parse_register(&sharpsl->mtd, NULL, 0,
-                        data->partitions, data->nr_partitions);
+        err = mtd_device_parse_register(&sharpsl->mtd, NULL, NULL,
+                                        data->partitions, data->nr_partitions);
         if (err)
                 goto err_add;
 
diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c
index 6caa0cd9d6a7..5aa518081c51 100644
--- a/drivers/mtd/nand/tmio_nand.c
+++ b/drivers/mtd/nand/tmio_nand.c
@@ -430,6 +430,7 @@ static int tmio_probe(struct platform_device *dev)
         nand_chip->ecc.mode = NAND_ECC_HW;
         nand_chip->ecc.size = 512;
         nand_chip->ecc.bytes = 6;
+        nand_chip->ecc.strength = 2;
         nand_chip->ecc.hwctl = tmio_nand_enable_hwecc;
         nand_chip->ecc.calculate = tmio_nand_calculate_ecc;
         nand_chip->ecc.correct = tmio_nand_correct_data;
@@ -456,9 +457,9 @@ static int tmio_probe(struct platform_device *dev)
                 goto err_scan;
         }
         /* Register the partitions */
-        retval = mtd_device_parse_register(mtd, NULL, 0,
-                        data ? data->partition : NULL,
-                        data ? data->num_partitions : 0);
+        retval = mtd_device_parse_register(mtd, NULL, NULL,
+                                           data ? data->partition : NULL,
+                                           data ? data->num_partitions : 0);
         if (!retval)
                 return retval;
 
diff --git a/drivers/mtd/nand/txx9ndfmc.c b/drivers/mtd/nand/txx9ndfmc.c
index c7c4f1d11c77..26398dcf21cf 100644
--- a/drivers/mtd/nand/txx9ndfmc.c
+++ b/drivers/mtd/nand/txx9ndfmc.c
@@ -356,6 +356,7 @@ static int __init txx9ndfmc_probe(struct platform_device *dev)
                 /* txx9ndfmc_nand_scan will overwrite ecc.size and ecc.bytes */
                 chip->ecc.size = 256;
                 chip->ecc.bytes = 3;
+                chip->ecc.strength = 1;
                 chip->chip_delay = 100;
                 chip->controller = &drvdata->hw_control;
 
@@ -386,7 +387,7 @@ static int __init txx9ndfmc_probe(struct platform_device *dev)
                 }
                 mtd->name = txx9_priv->mtdname;
 
-                mtd_device_parse_register(mtd, NULL, 0, NULL, 0);
+                mtd_device_parse_register(mtd, NULL, NULL, NULL, 0);
                 drvdata->mtds[i] = mtd;
         }
 
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c
index a75382aff5f6..c5f4ebf4b384 100644
--- a/drivers/mtd/nftlcore.c
+++ b/drivers/mtd/nftlcore.c
@@ -56,13 +56,6 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         if (memcmp(mtd->name, "DiskOnChip", 10))
                 return;
 
-        if (!mtd_can_have_bb(mtd)) {
-                printk(KERN_ERR
-"NFTL no longer supports the old DiskOnChip drivers loaded via docprobe.\n"
-"Please use the new diskonchip driver under the NAND subsystem.\n");
-                return;
-        }
-
         pr_debug("NFTL: add_mtd for %s\n", mtd->name);
 
         nftl = kzalloc(sizeof(struct NFTLrecord), GFP_KERNEL);
diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c
index 0ccd5bff2544..1c4f97c63e62 100644
--- a/drivers/mtd/onenand/generic.c
+++ b/drivers/mtd/onenand/generic.c
@@ -70,9 +70,9 @@ static int __devinit generic_onenand_probe(struct platform_device *pdev)
                 goto out_iounmap;
         }
 
-        err = mtd_device_parse_register(&info->mtd, NULL, 0,
-                        pdata ? pdata->parts : NULL,
-                        pdata ? pdata->nr_parts : 0);
+        err = mtd_device_parse_register(&info->mtd, NULL, NULL,
+                                        pdata ? pdata->parts : NULL,
+                                        pdata ? pdata->nr_parts : 0);
 
         platform_set_drvdata(pdev, info);
 
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index 7e9ea6852b67..398a82783848 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -751,9 +751,9 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
         if ((r = onenand_scan(&c->mtd, 1)) < 0)
                 goto err_release_regulator;
 
-        r = mtd_device_parse_register(&c->mtd, NULL, 0,
-                        pdata ? pdata->parts : NULL,
-                        pdata ? pdata->nr_parts : 0);
+        r = mtd_device_parse_register(&c->mtd, NULL, NULL,
+                                      pdata ? pdata->parts : NULL,
+                                      pdata ? pdata->nr_parts : 0);
         if (r)
                 goto err_release_onenand;
 
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index a061bc163da2..b3ce12ef359e 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1753,16 +1753,6 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
         pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int)to,
                         (int)len);
 
-        /* Initialize retlen, in case of early exit */
-        *retlen = 0;
-
-        /* Do not allow writes past end of device */
-        if (unlikely((to + len) > mtd->size)) {
-                printk(KERN_ERR "%s: Attempt write to past end of device\n",
-                        __func__);
-                return -EINVAL;
-        }
-
         /* Reject writes, which are not page aligned */
         if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) {
                 printk(KERN_ERR "%s: Attempt to write not page aligned data\n",
@@ -1890,13 +1880,6 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
         ops->retlen = 0;
         ops->oobretlen = 0;
 
-        /* Do not allow writes past end of device */
-        if (unlikely((to + len) > mtd->size)) {
-                printk(KERN_ERR "%s: Attempt write to past end of device\n",
-                        __func__);
-                return -EINVAL;
-        }
-
         /* Reject writes, which are not page aligned */
         if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) {
                 printk(KERN_ERR "%s: Attempt to write not page aligned data\n",
@@ -2493,12 +2476,6 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
                         (unsigned long long)instr->addr,
                         (unsigned long long)instr->len);
 
-        /* Do not allow erase past end of device */
-        if (unlikely((len + addr) > mtd->size)) {
-                printk(KERN_ERR "%s: Erase past end of device\n", __func__);
-                return -EINVAL;
-        }
-
         if (FLEXONENAND(this)) {
                 /* Find the eraseregion of this address */
                 int i = flexonenand_region(mtd, addr);
@@ -2525,8 +2502,6 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
                 return -EINVAL;
         }
 
-        instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
-
         /* Grab the lock and see if the device is available */
         onenand_get_device(mtd, FL_ERASING);
 
@@ -4103,33 +4078,34 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
         mtd->oobavail = this->ecclayout->oobavail;
 
         mtd->ecclayout = this->ecclayout;
+        mtd->ecc_strength = 1;
 
         /* Fill in remaining MTD driver data */
         mtd->type = ONENAND_IS_MLC(this) ? MTD_MLCNANDFLASH : MTD_NANDFLASH;
         mtd->flags = MTD_CAP_NANDFLASH;
-        mtd->erase = onenand_erase;
-        mtd->point = NULL;
-        mtd->unpoint = NULL;
-        mtd->read = onenand_read;
-        mtd->write = onenand_write;
-        mtd->read_oob = onenand_read_oob;
-        mtd->write_oob = onenand_write_oob;
-        mtd->panic_write = onenand_panic_write;
+        mtd->_erase = onenand_erase;
+        mtd->_point = NULL;
+        mtd->_unpoint = NULL;
+        mtd->_read = onenand_read;
+        mtd->_write = onenand_write;
+        mtd->_read_oob = onenand_read_oob;
+        mtd->_write_oob = onenand_write_oob;
+        mtd->_panic_write = onenand_panic_write;
 #ifdef CONFIG_MTD_ONENAND_OTP
-        mtd->get_fact_prot_info = onenand_get_fact_prot_info;
-        mtd->read_fact_prot_reg = onenand_read_fact_prot_reg;
-        mtd->get_user_prot_info = onenand_get_user_prot_info;
-        mtd->read_user_prot_reg = onenand_read_user_prot_reg;
-        mtd->write_user_prot_reg = onenand_write_user_prot_reg;
-        mtd->lock_user_prot_reg = onenand_lock_user_prot_reg;
+        mtd->_get_fact_prot_info = onenand_get_fact_prot_info;
+        mtd->_read_fact_prot_reg = onenand_read_fact_prot_reg;
+        mtd->_get_user_prot_info = onenand_get_user_prot_info;
+        mtd->_read_user_prot_reg = onenand_read_user_prot_reg;
+        mtd->_write_user_prot_reg = onenand_write_user_prot_reg;
+        mtd->_lock_user_prot_reg = onenand_lock_user_prot_reg;
 #endif
-        mtd->sync = onenand_sync;
-        mtd->lock = onenand_lock;
-        mtd->unlock = onenand_unlock;
-        mtd->suspend = onenand_suspend;
-        mtd->resume = onenand_resume;
-        mtd->block_isbad = onenand_block_isbad;
-        mtd->block_markbad = onenand_block_markbad;
+        mtd->_sync = onenand_sync;
+        mtd->_lock = onenand_lock;
+        mtd->_unlock = onenand_unlock;
+        mtd->_suspend = onenand_suspend;
+        mtd->_resume = onenand_resume;
+        mtd->_block_isbad = onenand_block_isbad;
+        mtd->_block_markbad = onenand_block_markbad;
         mtd->owner = THIS_MODULE;
         mtd->writebufsize = mtd->writesize;
 
diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c
index fa1ee43f735b..8e4b3f2742ba 100644
--- a/drivers/mtd/onenand/samsung.c
+++ b/drivers/mtd/onenand/samsung.c
@@ -923,7 +923,7 @@ static int s3c_onenand_probe(struct platform_device *pdev)
                 r = platform_get_resource(pdev, IORESOURCE_MEM, 1);
                 if (!r) {
                         dev_err(&pdev->dev, "no buffer memory resource defined\n");
-                        return -ENOENT;
+                        err = -ENOENT;
                         goto ahb_resource_failed;
                 }
 
@@ -964,7 +964,7 @@ static int s3c_onenand_probe(struct platform_device *pdev)
                 r = platform_get_resource(pdev, IORESOURCE_MEM, 1);
                 if (!r) {
                         dev_err(&pdev->dev, "no dma memory resource defined\n");
-                        return -ENOENT;
+                        err = -ENOENT;
                         goto dma_resource_failed;
                 }
 
@@ -1014,7 +1014,7 @@ static int s3c_onenand_probe(struct platform_device *pdev)
         if (s3c_read_reg(MEM_CFG_OFFSET) & ONENAND_SYS_CFG1_SYNC_READ)
                 dev_info(&onenand->pdev->dev, "OneNAND Sync. Burst Read enabled\n");
 
-        err = mtd_device_parse_register(mtd, NULL, 0,
+        err = mtd_device_parse_register(mtd, NULL, NULL,
                                         pdata ? pdata->parts : NULL,
                                         pdata ? pdata->nr_parts : 0);
 
diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c
index 48970c14beff..580035c803d6 100644
--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -78,8 +78,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
 
         if ( directory < 0 ) {
                 offset = master->size + directory * master->erasesize;
-                while (mtd_can_have_bb(master) &&
-                       mtd_block_isbad(master, offset)) {
+                while (mtd_block_isbad(master, offset)) {
                         if (!offset) {
                         nogood:
                                 printk(KERN_NOTICE "Failed to find a non-bad block to check for RedBoot partition table\n");
@@ -89,8 +88,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
                 }
         } else {
                 offset = directory * master->erasesize;
-                while (mtd_can_have_bb(master) &&
-                       mtd_block_isbad(master, offset)) {
+                while (mtd_block_isbad(master, offset)) {
                         offset += master->erasesize;
                         if (offset == master->size)
                                 goto nogood;
diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c
index 072ed5970e2f..9e2dfd517aa5 100644
--- a/drivers/mtd/sm_ftl.c
+++ b/drivers/mtd/sm_ftl.c
@@ -1256,7 +1256,7 @@ static void sm_remove_dev(struct mtd_blktrans_dev *dev)
 
 static struct mtd_blktrans_ops sm_ftl_ops = {
         .name           = "smblk",
-        .major          = -1,
+        .major          = 0,
         .part_bits      = SM_FTL_PARTN_BITS,
         .blksize        = SM_SECTOR_SIZE,
         .getgeo         = sm_getgeo,
diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c
index 941bc3c05d6e..90b98822d9a4 100644
--- a/drivers/mtd/ubi/gluebi.c
+++ b/drivers/mtd/ubi/gluebi.c
@@ -174,11 +174,7 @@ static int gluebi_read(struct mtd_info *mtd, loff_t from, size_t len,
         int err = 0, lnum, offs, total_read;
         struct gluebi_device *gluebi;
 
-        if (len < 0 || from < 0 || from + len > mtd->size)
-                return -EINVAL;
-
         gluebi = container_of(mtd, struct gluebi_device, mtd);
-
         lnum = div_u64_rem(from, mtd->erasesize, &offs);
         total_read = len;
         while (total_read) {
@@ -218,14 +214,7 @@ static int gluebi_write(struct mtd_info *mtd, loff_t to, size_t len,
         int err = 0, lnum, offs, total_written;
         struct gluebi_device *gluebi;
 
-        if (len < 0 || to < 0 || len + to > mtd->size)
-                return -EINVAL;
-
         gluebi = container_of(mtd, struct gluebi_device, mtd);
-
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-
         lnum = div_u64_rem(to, mtd->erasesize, &offs);
 
         if (len % mtd->writesize || offs % mtd->writesize)
@@ -265,21 +254,13 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
         int err, i, lnum, count;
         struct gluebi_device *gluebi;
 
-        if (instr->addr < 0 || instr->addr > mtd->size - mtd->erasesize)
-                return -EINVAL;
-        if (instr->len < 0 || instr->addr + instr->len > mtd->size)
-                return -EINVAL;
         if (mtd_mod_by_ws(instr->addr, mtd) || mtd_mod_by_ws(instr->len, mtd))
                 return -EINVAL;
 
         lnum = mtd_div_by_eb(instr->addr, mtd);
         count = mtd_div_by_eb(instr->len, mtd);
-
         gluebi = container_of(mtd, struct gluebi_device, mtd);
 
-        if (!(mtd->flags & MTD_WRITEABLE))
-                return -EROFS;
-
         for (i = 0; i < count - 1; i++) {
                 err = ubi_leb_unmap(gluebi->desc, lnum + i);
                 if (err)
@@ -340,11 +321,11 @@ static int gluebi_create(struct ubi_device_info *di,
         mtd->owner      = THIS_MODULE;
         mtd->writesize  = di->min_io_size;
         mtd->erasesize  = vi->usable_leb_size;
-        mtd->read       = gluebi_read;
-        mtd->write      = gluebi_write;
-        mtd->erase      = gluebi_erase;
-        mtd->get_device = gluebi_get_device;
-        mtd->put_device = gluebi_put_device;
+        mtd->_read       = gluebi_read;
+        mtd->_write      = gluebi_write;
+        mtd->_erase      = gluebi_erase;
+        mtd->_get_device = gluebi_get_device;
+        mtd->_put_device = gluebi_put_device;
 
         /*
          * In case of dynamic a volume, MTD device size is just volume size. In
diff --git a/drivers/net/ethernet/sfc/mtd.c b/drivers/net/ethernet/sfc/mtd.c
index 26b3c23b0b6f..758148379b0e 100644
--- a/drivers/net/ethernet/sfc/mtd.c
+++ b/drivers/net/ethernet/sfc/mtd.c
@@ -193,7 +193,7 @@ static int efx_mtd_erase(struct mtd_info *mtd, struct erase_info *erase)
                 erase->state = MTD_ERASE_DONE;
         } else {
                 erase->state = MTD_ERASE_FAILED;
-                erase->fail_addr = 0xffffffff;
+                erase->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
         }
         mtd_erase_callback(erase);
         return rc;
@@ -263,10 +263,10 @@ static int efx_mtd_probe_device(struct efx_nic *efx, struct efx_mtd *efx_mtd)
                 part->mtd.owner = THIS_MODULE;
                 part->mtd.priv = efx_mtd;
                 part->mtd.name = part->name;
-                part->mtd.erase = efx_mtd_erase;
-                part->mtd.read = efx_mtd->ops->read;
-                part->mtd.write = efx_mtd->ops->write;
-                part->mtd.sync = efx_mtd_sync;
+                part->mtd._erase = efx_mtd_erase;
+                part->mtd._read = efx_mtd->ops->read;
+                part->mtd._write = efx_mtd->ops->write;
+                part->mtd._sync = efx_mtd_sync;
 
                 if (mtd_device_register(&part->mtd, NULL, 0))
                         goto fail;
diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
index 926d02068a14..922f146e4235 100644
--- a/fs/jffs2/acl.c
+++ b/fs/jffs2/acl.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/fs.h>
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 404111b016c9..2b60ce1996aa 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/jffs2.h>
 #include <linux/mtd/mtd.h>
@@ -42,12 +44,13 @@ int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c)
 
         tsk = kthread_run(jffs2_garbage_collect_thread, c, "jffs2_gcd_mtd%d", c->mtd->index);
         if (IS_ERR(tsk)) {
-                printk(KERN_WARNING "fork failed for JFFS2 garbage collect thread: %ld\n", -PTR_ERR(tsk));
+                pr_warn("fork failed for JFFS2 garbage collect thread: %ld\n",
+                        -PTR_ERR(tsk));
                 complete(&c->gc_thread_exit);
                 ret = PTR_ERR(tsk);
         } else {
                 /* Wait for it... */
-                D1(printk(KERN_DEBUG "JFFS2: Garbage collect thread is pid %d\n", tsk->pid));
+                jffs2_dbg(1, "Garbage collect thread is pid %d\n", tsk->pid);
                 wait_for_completion(&c->gc_thread_start);
                 ret = tsk->pid;
         }
@@ -60,7 +63,7 @@ void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c)
         int wait = 0;
         spin_lock(&c->erase_completion_lock);
         if (c->gc_task) {
-                D1(printk(KERN_DEBUG "jffs2: Killing GC task %d\n", c->gc_task->pid));
+                jffs2_dbg(1, "Killing GC task %d\n", c->gc_task->pid);
                 send_sig(SIGKILL, c->gc_task, 1);
                 wait = 1;
         }
@@ -90,7 +93,7 @@ static int jffs2_garbage_collect_thread(void *_c)
                 if (!jffs2_thread_should_wake(c)) {
                         set_current_state (TASK_INTERRUPTIBLE);
                         spin_unlock(&c->erase_completion_lock);
-                        D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread sleeping...\n"));
+                        jffs2_dbg(1, "%s(): sleeping...\n", __func__);
                         schedule();
                 } else
                         spin_unlock(&c->erase_completion_lock);
@@ -109,7 +112,7 @@ static int jffs2_garbage_collect_thread(void *_c)
                 schedule_timeout_interruptible(msecs_to_jiffies(50));
 
                 if (kthread_should_stop()) {
-                        D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread():  kthread_stop() called.\n"));
+                        jffs2_dbg(1, "%s(): kthread_stop() called\n", __func__);
                         goto die;
                 }
 
@@ -126,28 +129,32 @@ static int jffs2_garbage_collect_thread(void *_c)
 
                         switch(signr) {
                         case SIGSTOP:
-                                D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): SIGSTOP received.\n"));
+                                jffs2_dbg(1, "%s(): SIGSTOP received\n",
+                                          __func__);
                                 set_current_state(TASK_STOPPED);
                                 schedule();
                                 break;
 
                         case SIGKILL:
-                                D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): SIGKILL received.\n"));
+                                jffs2_dbg(1, "%s(): SIGKILL received\n",
+                                          __func__);
                                 goto die;
 
                         case SIGHUP:
-                                D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): SIGHUP received.\n"));
+                                jffs2_dbg(1, "%s(): SIGHUP received\n",
+                                          __func__);
                                 break;
                         default:
-                                D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): signal %ld received\n", signr));
+                                jffs2_dbg(1, "%s(): signal %ld received\n",
+                                          __func__, signr);
                         }
                 }
                 /* We don't want SIGHUP to interrupt us. STOP and KILL are OK though. */
                 disallow_signal(SIGHUP);
 
-                D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): pass\n"));
+                jffs2_dbg(1, "%s(): pass\n", __func__);
                 if (jffs2_garbage_collect_pass(c) == -ENOSPC) {
-                        printk(KERN_NOTICE "No space for garbage collection. Aborting GC thread\n");
+                        pr_notice("No space for garbage collection. Aborting GC thread\n");
                         goto die;
                 }
         }
diff --git a/fs/jffs2/build.c b/fs/jffs2/build.c
index 3005ec4520ad..a3750f902adc 100644
--- a/fs/jffs2/build.c
+++ b/fs/jffs2/build.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
@@ -307,8 +309,8 @@ static void jffs2_calc_trigger_levels(struct jffs2_sb_info *c)
            trying to GC to make more space. It'll be a fruitless task */
         c->nospc_dirty_size = c->sector_size + (c->flash_size / 100);
 
-        dbg_fsbuild("JFFS2 trigger levels (size %d KiB, block size %d KiB, %d blocks)\n",
-                  c->flash_size / 1024, c->sector_size / 1024, c->nr_blocks);
+        dbg_fsbuild("trigger levels (size %d KiB, block size %d KiB, %d blocks)\n",
+                    c->flash_size / 1024, c->sector_size / 1024, c->nr_blocks);
         dbg_fsbuild("Blocks required to allow deletion:    %d (%d KiB)\n",
                   c->resv_blocks_deletion, c->resv_blocks_deletion*c->sector_size/1024);
         dbg_fsbuild("Blocks required to allow writes:      %d (%d KiB)\n",
diff --git a/fs/jffs2/compr.c b/fs/jffs2/compr.c
index 96ed3c9ec3fc..4849a4c9a0e2 100644
--- a/fs/jffs2/compr.c
+++ b/fs/jffs2/compr.c
@@ -12,6 +12,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include "compr.h"
 
 static DEFINE_SPINLOCK(jffs2_compressor_list_lock);
@@ -79,7 +81,7 @@ static int jffs2_selected_compress(u8 compr, unsigned char *data_in,
 
         output_buf = kmalloc(*cdatalen, GFP_KERNEL);
         if (!output_buf) {
-                printk(KERN_WARNING "JFFS2: No memory for compressor allocation. Compression failed.\n");
+                pr_warn("No memory for compressor allocation. Compression failed.\n");
                 return ret;
         }
         orig_slen = *datalen;
@@ -188,7 +190,8 @@ uint16_t jffs2_compress(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                                 tmp_buf = kmalloc(orig_slen, GFP_KERNEL);
                                 spin_lock(&jffs2_compressor_list_lock);
                                 if (!tmp_buf) {
-                                        printk(KERN_WARNING "JFFS2: No memory for compressor allocation. (%d bytes)\n", orig_slen);
+                                        pr_warn("No memory for compressor allocation. (%d bytes)\n",
+                                                orig_slen);
                                         continue;
                                 }
                                 else {
@@ -235,7 +238,7 @@ uint16_t jffs2_compress(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                                 cpage_out, datalen, cdatalen);
                 break;
         default:
-                printk(KERN_ERR "JFFS2: unknown compression mode.\n");
+                pr_err("unknown compression mode\n");
         }
 
         if (ret == JFFS2_COMPR_NONE) {
@@ -277,7 +280,8 @@ int jffs2_decompress(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                                 ret = this->decompress(cdata_in, data_out, cdatalen, datalen);
                                 spin_lock(&jffs2_compressor_list_lock);
                                 if (ret) {
-                                        printk(KERN_WARNING "Decompressor \"%s\" returned %d\n", this->name, ret);
+                                        pr_warn("Decompressor \"%s\" returned %d\n",
+                                                this->name, ret);
                                 }
                                 else {
                                         this->stat_decompr_blocks++;
@@ -287,7 +291,7 @@ int jffs2_decompress(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                                 return ret;
                         }
                 }
-                printk(KERN_WARNING "JFFS2 compression type 0x%02x not available.\n", comprtype);
+                pr_warn("compression type 0x%02x not available\n", comprtype);
                 spin_unlock(&jffs2_compressor_list_lock);
                 return -EIO;
         }
@@ -299,7 +303,7 @@ int jffs2_register_compressor(struct jffs2_compressor *comp)
         struct jffs2_compressor *this;
 
         if (!comp->name) {
-                printk(KERN_WARNING "NULL compressor name at registering JFFS2 compressor. Failed.\n");
+                pr_warn("NULL compressor name at registering JFFS2 compressor. Failed.\n");
                 return -1;
         }
         comp->compr_buf_size=0;
@@ -309,7 +313,7 @@ int jffs2_register_compressor(struct jffs2_compressor *comp)
         comp->stat_compr_new_size=0;
         comp->stat_compr_blocks=0;
         comp->stat_decompr_blocks=0;
-        D1(printk(KERN_DEBUG "Registering JFFS2 compressor \"%s\"\n", comp->name));
+        jffs2_dbg(1, "Registering JFFS2 compressor \"%s\"\n", comp->name);
 
         spin_lock(&jffs2_compressor_list_lock);
 
@@ -332,15 +336,15 @@ out:
 
 int jffs2_unregister_compressor(struct jffs2_compressor *comp)
 {
-        D2(struct jffs2_compressor *this;)
+        D2(struct jffs2_compressor *this);
 
-        D1(printk(KERN_DEBUG "Unregistering JFFS2 compressor \"%s\"\n", comp->name));
+        jffs2_dbg(1, "Unregistering JFFS2 compressor \"%s\"\n", comp->name);
 
         spin_lock(&jffs2_compressor_list_lock);
 
         if (comp->usecount) {
                 spin_unlock(&jffs2_compressor_list_lock);
-                printk(KERN_WARNING "JFFS2: Compressor module is in use. Unregister failed.\n");
+                pr_warn("Compressor module is in use. Unregister failed.\n");
                 return -1;
         }
         list_del(&comp->list);
@@ -377,17 +381,17 @@ int __init jffs2_compressors_init(void)
 /* Setting default compression mode */
 #ifdef CONFIG_JFFS2_CMODE_NONE
         jffs2_compression_mode = JFFS2_COMPR_MODE_NONE;
-        D1(printk(KERN_INFO "JFFS2: default compression mode: none\n");)
+        jffs2_dbg(1, "default compression mode: none\n");
 #else
 #ifdef CONFIG_JFFS2_CMODE_SIZE
         jffs2_compression_mode = JFFS2_COMPR_MODE_SIZE;
-        D1(printk(KERN_INFO "JFFS2: default compression mode: size\n");)
+        jffs2_dbg(1, "default compression mode: size\n");
 #else
 #ifdef CONFIG_JFFS2_CMODE_FAVOURLZO
         jffs2_compression_mode = JFFS2_COMPR_MODE_FAVOURLZO;
-        D1(printk(KERN_INFO "JFFS2: default compression mode: favourlzo\n");)
+        jffs2_dbg(1, "default compression mode: favourlzo\n");
 #else
-        D1(printk(KERN_INFO "JFFS2: default compression mode: priority\n");)
+        jffs2_dbg(1, "default compression mode: priority\n");
 #endif
 #endif
 #endif
diff --git a/fs/jffs2/compr_lzo.c b/fs/jffs2/compr_lzo.c
index af186ee674d8..c553bd6506da 100644
--- a/fs/jffs2/compr_lzo.c
+++ b/fs/jffs2/compr_lzo.c
@@ -33,7 +33,6 @@ static int __init alloc_workspace(void)
         lzo_compress_buf = vmalloc(lzo1x_worst_compress(PAGE_SIZE));
 
         if (!lzo_mem || !lzo_compress_buf) {
-                printk(KERN_WARNING "Failed to allocate lzo deflate workspace\n");
                 free_workspace();
                 return -ENOMEM;
         }
diff --git a/fs/jffs2/compr_rubin.c b/fs/jffs2/compr_rubin.c
index 9e7cec808c4c..92e0644bf867 100644
--- a/fs/jffs2/compr_rubin.c
+++ b/fs/jffs2/compr_rubin.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/string.h>
 #include <linux/types.h>
 #include <linux/jffs2.h>
diff --git a/fs/jffs2/compr_zlib.c b/fs/jffs2/compr_zlib.c
index 5a001020c542..0b9a1e44e833 100644
--- a/fs/jffs2/compr_zlib.c
+++ b/fs/jffs2/compr_zlib.c
@@ -14,6 +14,8 @@
 #error "The userspace support got too messy and was removed. Update your mkfs.jffs2"
 #endif
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/zlib.h>
 #include <linux/zutil.h>
@@ -42,18 +44,18 @@ static int __init alloc_workspaces(void)
 {
         def_strm.workspace = vmalloc(zlib_deflate_workspacesize(MAX_WBITS,
                                                         MAX_MEM_LEVEL));
-        if (!def_strm.workspace) {
-                printk(KERN_WARNING "Failed to allocate %d bytes for deflate workspace\n", zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL));
+        if (!def_strm.workspace)
                 return -ENOMEM;
-        }
-        D1(printk(KERN_DEBUG "Allocated %d bytes for deflate workspace\n", zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL)));
+
+        jffs2_dbg(1, "Allocated %d bytes for deflate workspace\n",
+                  zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL));
         inf_strm.workspace = vmalloc(zlib_inflate_workspacesize());
         if (!inf_strm.workspace) {
-                printk(KERN_WARNING "Failed to allocate %d bytes for inflate workspace\n", zlib_inflate_workspacesize());
                 vfree(def_strm.workspace);
                 return -ENOMEM;
         }
-        D1(printk(KERN_DEBUG "Allocated %d bytes for inflate workspace\n", zlib_inflate_workspacesize()));
+        jffs2_dbg(1, "Allocated %d bytes for inflate workspace\n",
+                  zlib_inflate_workspacesize());
         return 0;
 }
 
@@ -79,7 +81,7 @@ static int jffs2_zlib_compress(unsigned char *data_in,
         mutex_lock(&deflate_mutex);
 
         if (Z_OK != zlib_deflateInit(&def_strm, 3)) {
-                printk(KERN_WARNING "deflateInit failed\n");
+                pr_warn("deflateInit failed\n");
                 mutex_unlock(&deflate_mutex);
                 return -1;
         }
@@ -93,13 +95,14 @@ static int jffs2_zlib_compress(unsigned char *data_in,
         while (def_strm.total_out < *dstlen - STREAM_END_SPACE && def_strm.total_in < *sourcelen) {
                 def_strm.avail_out = *dstlen - (def_strm.total_out + STREAM_END_SPACE);
                 def_strm.avail_in = min((unsigned)(*sourcelen-def_strm.total_in), def_strm.avail_out);
-                D1(printk(KERN_DEBUG "calling deflate with avail_in %d, avail_out %d\n",
-                          def_strm.avail_in, def_strm.avail_out));
+                jffs2_dbg(1, "calling deflate with avail_in %d, avail_out %d\n",
+                          def_strm.avail_in, def_strm.avail_out);
                 ret = zlib_deflate(&def_strm, Z_PARTIAL_FLUSH);
-                D1(printk(KERN_DEBUG "deflate returned with avail_in %d, avail_out %d, total_in %ld, total_out %ld\n",
-                          def_strm.avail_in, def_strm.avail_out, def_strm.total_in, def_strm.total_out));
+                jffs2_dbg(1, "deflate returned with avail_in %d, avail_out %d, total_in %ld, total_out %ld\n",
+                          def_strm.avail_in, def_strm.avail_out,
+                          def_strm.total_in, def_strm.total_out);
                 if (ret != Z_OK) {
-                        D1(printk(KERN_DEBUG "deflate in loop returned %d\n", ret));
+                        jffs2_dbg(1, "deflate in loop returned %d\n", ret);
                         zlib_deflateEnd(&def_strm);
                         mutex_unlock(&deflate_mutex);
                         return -1;
@@ -111,20 +114,20 @@ static int jffs2_zlib_compress(unsigned char *data_in,
         zlib_deflateEnd(&def_strm);
 
         if (ret != Z_STREAM_END) {
-                D1(printk(KERN_DEBUG "final deflate returned %d\n", ret));
+                jffs2_dbg(1, "final deflate returned %d\n", ret);
                 ret = -1;
                 goto out;
         }
 
         if (def_strm.total_out >= def_strm.total_in) {
-                D1(printk(KERN_DEBUG "zlib compressed %ld bytes into %ld; failing\n",
-                          def_strm.total_in, def_strm.total_out));
+                jffs2_dbg(1, "zlib compressed %ld bytes into %ld; failing\n",
+                          def_strm.total_in, def_strm.total_out);
                 ret = -1;
                 goto out;
         }
 
-        D1(printk(KERN_DEBUG "zlib compressed %ld bytes into %ld\n",
-                  def_strm.total_in, def_strm.total_out));
+        jffs2_dbg(1, "zlib compressed %ld bytes into %ld\n",
+                  def_strm.total_in, def_strm.total_out);
 
         *dstlen = def_strm.total_out;
         *sourcelen = def_strm.total_in;
@@ -157,18 +160,18 @@ static int jffs2_zlib_decompress(unsigned char *data_in,
             ((data_in[0] & 0x0f) == Z_DEFLATED) &&
             !(((data_in[0]<<8) + data_in[1]) % 31)) {
 
-                D2(printk(KERN_DEBUG "inflate skipping adler32\n"));
+                jffs2_dbg(2, "inflate skipping adler32\n");
                 wbits = -((data_in[0] >> 4) + 8);
                 inf_strm.next_in += 2;
                 inf_strm.avail_in -= 2;
         } else {
                 /* Let this remain D1 for now -- it should never happen */
-                D1(printk(KERN_DEBUG "inflate not skipping adler32\n"));
+                jffs2_dbg(1, "inflate not skipping adler32\n");
         }
 
 
         if (Z_OK != zlib_inflateInit2(&inf_strm, wbits)) {
-                printk(KERN_WARNING "inflateInit failed\n");
+                pr_warn("inflateInit failed\n");
                 mutex_unlock(&inflate_mutex);
                 return 1;
         }
@@ -176,7 +179,7 @@ static int jffs2_zlib_decompress(unsigned char *data_in,
         while((ret = zlib_inflate(&inf_strm, Z_FINISH)) == Z_OK)
                 ;
         if (ret != Z_STREAM_END) {
-                printk(KERN_NOTICE "inflate returned %d\n", ret);
+                pr_notice("inflate returned %d\n", ret);
         }
         zlib_inflateEnd(&inf_strm);
         mutex_unlock(&inflate_mutex);
diff --git a/fs/jffs2/debug.c b/fs/jffs2/debug.c
index e0b76c87a91a..1090eb64b90d 100644
--- a/fs/jffs2/debug.c
+++ b/fs/jffs2/debug.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/pagemap.h>
@@ -261,12 +263,15 @@ void __jffs2_dbg_superblock_counts(struct jffs2_sb_info *c)
                 bad += c->sector_size;
         }
 
-#define check(sz) \
-        if (sz != c->sz##_size) {                       \
-                printk(KERN_WARNING #sz "_size mismatch counted 0x%x, c->" #sz "_size 0x%x\n", \
-                       sz, c->sz##_size);               \
-                dump = 1;                               \
-        }
+#define check(sz)                                                       \
+do {                                                                    \
+        if (sz != c->sz##_size) {                                       \
+                pr_warn("%s_size mismatch counted 0x%x, c->%s_size 0x%x\n", \
+                        #sz, sz, #sz, c->sz##_size);                    \
+                dump = 1;                                               \
+        }                                                               \
+} while (0)
+
         check(free);
         check(dirty);
         check(used);
@@ -274,11 +279,12 @@ void __jffs2_dbg_superblock_counts(struct jffs2_sb_info *c)
         check(unchecked);
         check(bad);
         check(erasing);
+
 #undef check
 
         if (nr_counted != c->nr_blocks) {
-                printk(KERN_WARNING "%s counted only 0x%x blocks of 0x%x. Where are the others?\n",
-                       __func__, nr_counted, c->nr_blocks);
+                pr_warn("%s counted only 0x%x blocks of 0x%x. Where are the others?\n",
+                        __func__, nr_counted, c->nr_blocks);
                 dump = 1;
         }
 
diff --git a/fs/jffs2/debug.h b/fs/jffs2/debug.h
index c4f8eef5ca68..4fd9be4cbc98 100644
--- a/fs/jffs2/debug.h
+++ b/fs/jffs2/debug.h
@@ -51,6 +51,7 @@
  * superseded by nicer dbg_xxx() macros...
  */
 #if CONFIG_JFFS2_FS_DEBUG > 0
+#define DEBUG
 #define D1(x) x
 #else
 #define D1(x)
@@ -62,50 +63,33 @@
 #define D2(x)
 #endif
 
+#define jffs2_dbg(level, fmt, ...)              \
+do {                                            \
+        if (CONFIG_JFFS2_FS_DEBUG >= level)     \
+                pr_debug(fmt, ##__VA_ARGS__);   \
+} while (0)
+
 /* The prefixes of JFFS2 messages */
+#define JFFS2_DBG               KERN_DEBUG
 #define JFFS2_DBG_PREFIX        "[JFFS2 DBG]"
-#define JFFS2_ERR_PREFIX        "JFFS2 error:"
-#define JFFS2_WARN_PREFIX       "JFFS2 warning:"
-#define JFFS2_NOTICE_PREFIX     "JFFS2 notice:"
-
-#define JFFS2_ERR       KERN_ERR
-#define JFFS2_WARN      KERN_WARNING
-#define JFFS2_NOT       KERN_NOTICE
-#define JFFS2_DBG       KERN_DEBUG
-
 #define JFFS2_DBG_MSG_PREFIX    JFFS2_DBG JFFS2_DBG_PREFIX
-#define JFFS2_ERR_MSG_PREFIX    JFFS2_ERR JFFS2_ERR_PREFIX
-#define JFFS2_WARN_MSG_PREFIX   JFFS2_WARN JFFS2_WARN_PREFIX
-#define JFFS2_NOTICE_MSG_PREFIX JFFS2_NOT JFFS2_NOTICE_PREFIX
 
 /* JFFS2 message macros */
-#define JFFS2_ERROR(fmt, ...)                                           \
-        do {                                                            \
-                printk(JFFS2_ERR_MSG_PREFIX                             \
-                        " (%d) %s: " fmt, task_pid_nr(current),         \
-                        __func__ , ##__VA_ARGS__);                      \
-        } while(0)
+#define JFFS2_ERROR(fmt, ...)                                   \
+        pr_err("error: (%d) %s: " fmt,                          \
+               task_pid_nr(current), __func__, ##__VA_ARGS__)
 
 #define JFFS2_WARNING(fmt, ...)                                         \
-        do {                                                            \
-                printk(JFFS2_WARN_MSG_PREFIX                            \
-                        " (%d) %s: " fmt, task_pid_nr(current),         \
-                        __func__ , ##__VA_ARGS__);                      \
-        } while(0)
+        pr_warn("warning: (%d) %s: " fmt,                               \
+                task_pid_nr(current), __func__, ##__VA_ARGS__)
 
 #define JFFS2_NOTICE(fmt, ...)                                          \
-        do {                                                            \
-                printk(JFFS2_NOTICE_MSG_PREFIX                          \
-                        " (%d) %s: " fmt, task_pid_nr(current),         \
-                        __func__ , ##__VA_ARGS__);                      \
-        } while(0)
+        pr_notice("notice: (%d) %s: " fmt,                              \
+                  task_pid_nr(current), __func__, ##__VA_ARGS__)
 
 #define JFFS2_DEBUG(fmt, ...)                                           \
-        do {                                                            \
-                printk(JFFS2_DBG_MSG_PREFIX                             \
-                        " (%d) %s: " fmt, task_pid_nr(current),         \
-                        __func__ , ##__VA_ARGS__);                      \
-        } while(0)
+        printk(KERN_DEBUG "[JFFS2 DBG] (%d) %s: " fmt,                  \
+               task_pid_nr(current), __func__, ##__VA_ARGS__)
 
 /*
  * We split our debugging messages on several parts, depending on the JFFS2
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 973ac5822bd7..b56018896d5e 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/fs.h>
@@ -79,7 +81,7 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
         uint32_t ino = 0;
         struct inode *inode = NULL;
 
-        D1(printk(KERN_DEBUG "jffs2_lookup()\n"));
+        jffs2_dbg(1, "jffs2_lookup()\n");
 
         if (target->d_name.len > JFFS2_MAX_NAME_LEN)
                 return ERR_PTR(-ENAMETOOLONG);
@@ -103,7 +105,7 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
         if (ino) {
                 inode = jffs2_iget(dir_i->i_sb, ino);
                 if (IS_ERR(inode))
-                        printk(KERN_WARNING "iget() failed for ino #%u\n", ino);
+                        pr_warn("iget() failed for ino #%u\n", ino);
         }
 
         return d_splice_alias(inode, target);
@@ -119,21 +121,22 @@ static int jffs2_readdir(struct file *filp, void *dirent, filldir_t filldir)
         struct jffs2_full_dirent *fd;
         unsigned long offset, curofs;
 
-        D1(printk(KERN_DEBUG "jffs2_readdir() for dir_i #%lu\n", filp->f_path.dentry->d_inode->i_ino));
+        jffs2_dbg(1, "jffs2_readdir() for dir_i #%lu\n",
+                  filp->f_path.dentry->d_inode->i_ino);
 
         f = JFFS2_INODE_INFO(inode);
 
         offset = filp->f_pos;
 
         if (offset == 0) {
-                D1(printk(KERN_DEBUG "Dirent 0: \".\", ino #%lu\n", inode->i_ino));
+                jffs2_dbg(1, "Dirent 0: \".\", ino #%lu\n", inode->i_ino);
                 if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR) < 0)
                         goto out;
                 offset++;
         }
         if (offset == 1) {
                 unsigned long pino = parent_ino(filp->f_path.dentry);
-                D1(printk(KERN_DEBUG "Dirent 1: \"..\", ino #%lu\n", pino));
+                jffs2_dbg(1, "Dirent 1: \"..\", ino #%lu\n", pino);
                 if (filldir(dirent, "..", 2, 1, pino, DT_DIR) < 0)
                         goto out;
                 offset++;
@@ -146,16 +149,18 @@ static int jffs2_readdir(struct file *filp, void *dirent, filldir_t filldir)
                 curofs++;
                 /* First loop: curofs = 2; offset = 2 */
                 if (curofs < offset) {
-                        D2(printk(KERN_DEBUG "Skipping dirent: \"%s\", ino #%u, type %d, because curofs %ld < offset %ld\n",
-                                  fd->name, fd->ino, fd->type, curofs, offset));
+                        jffs2_dbg(2, "Skipping dirent: \"%s\", ino #%u, type %d, because curofs %ld < offset %ld\n",
+                                  fd->name, fd->ino, fd->type, curofs, offset);
                         continue;
                 }
                 if (!fd->ino) {
-                        D2(printk(KERN_DEBUG "Skipping deletion dirent \"%s\"\n", fd->name));
+                        jffs2_dbg(2, "Skipping deletion dirent \"%s\"\n",
+                                  fd->name);
                         offset++;
                         continue;
                 }
-                D2(printk(KERN_DEBUG "Dirent %ld: \"%s\", ino #%u, type %d\n", offset, fd->name, fd->ino, fd->type));
+                jffs2_dbg(2, "Dirent %ld: \"%s\", ino #%u, type %d\n",
+                          offset, fd->name, fd->ino, fd->type);
                 if (filldir(dirent, fd->name, strlen(fd->name), offset, fd->ino, fd->type) < 0)
                         break;
                 offset++;
@@ -184,12 +189,12 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry,
 
         c = JFFS2_SB_INFO(dir_i->i_sb);
 
-        D1(printk(KERN_DEBUG "jffs2_create()\n"));
+        jffs2_dbg(1, "%s()\n", __func__);
 
         inode = jffs2_new_inode(dir_i, mode, ri);
 
         if (IS_ERR(inode)) {
-                D1(printk(KERN_DEBUG "jffs2_new_inode() failed\n"));
+                jffs2_dbg(1, "jffs2_new_inode() failed\n");
                 jffs2_free_raw_inode(ri);
                 return PTR_ERR(inode);
         }
@@ -217,9 +222,9 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry,
 
         jffs2_free_raw_inode(ri);
 
-        D1(printk(KERN_DEBUG "jffs2_create: Created ino #%lu with mode %o, nlink %d(%d). nrpages %ld\n",
-                  inode->i_ino, inode->i_mode, inode->i_nlink,
-                  f->inocache->pino_nlink, inode->i_mapping->nrpages));
+        jffs2_dbg(1, "%s(): Created ino #%lu with mode %o, nlink %d(%d). nrpages %ld\n",
+                  __func__, inode->i_ino, inode->i_mode, inode->i_nlink,
+                  f->inocache->pino_nlink, inode->i_mapping->nrpages);
 
         d_instantiate(dentry, inode);
         unlock_new_inode(inode);
@@ -362,14 +367,15 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
         /* We use f->target field to store the target path. */
         f->target = kmemdup(target, targetlen + 1, GFP_KERNEL);
         if (!f->target) {
-                printk(KERN_WARNING "Can't allocate %d bytes of memory\n", targetlen + 1);
+                pr_warn("Can't allocate %d bytes of memory\n", targetlen + 1);
                 mutex_unlock(&f->sem);
                 jffs2_complete_reservation(c);
                 ret = -ENOMEM;
                 goto fail;
         }
 
-        D1(printk(KERN_DEBUG "jffs2_symlink: symlink's target '%s' cached\n", (char *)f->target));
+        jffs2_dbg(1, "%s(): symlink's target '%s' cached\n",
+                  __func__, (char *)f->target);
 
         /* No data here. Only a metadata node, which will be
            obsoleted by the first data write
@@ -856,7 +862,8 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
                         f->inocache->pino_nlink++;
                 mutex_unlock(&f->sem);
 
-                printk(KERN_NOTICE "jffs2_rename(): Link succeeded, unlink failed (err %d). You now have a hard link\n", ret);
+                pr_notice("%s(): Link succeeded, unlink failed (err %d). You now have a hard link\n",
+                          __func__, ret);
                 /* Might as well let the VFS know */
                 d_instantiate(new_dentry, old_dentry->d_inode);
                 ihold(old_dentry->d_inode);
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index eafb8d37a6fb..4a6cf289be24 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/mtd/mtd.h>
@@ -46,11 +48,12 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
 #else /* Linux */
         struct erase_info *instr;
 
-        D1(printk(KERN_DEBUG "jffs2_erase_block(): erase block %#08x (range %#08x-%#08x)\n",
-                                jeb->offset, jeb->offset, jeb->offset + c->sector_size));
+        jffs2_dbg(1, "%s(): erase block %#08x (range %#08x-%#08x)\n",
+                  __func__,
+                  jeb->offset, jeb->offset, jeb->offset + c->sector_size);
         instr = kmalloc(sizeof(struct erase_info) + sizeof(struct erase_priv_struct), GFP_KERNEL);
         if (!instr) {
-                printk(KERN_WARNING "kmalloc for struct erase_info in jffs2_erase_block failed. Refiling block for later\n");
+                pr_warn("kmalloc for struct erase_info in jffs2_erase_block failed. Refiling block for later\n");
                 mutex_lock(&c->erase_free_sem);
                 spin_lock(&c->erase_completion_lock);
                 list_move(&jeb->list, &c->erase_pending_list);
@@ -69,7 +72,6 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
         instr->len = c->sector_size;
         instr->callback = jffs2_erase_callback;
         instr->priv = (unsigned long)(&instr[1]);
-        instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
 
         ((struct erase_priv_struct *)instr->priv)->jeb = jeb;
         ((struct erase_priv_struct *)instr->priv)->c = c;
@@ -84,7 +86,8 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
 
         if (ret == -ENOMEM || ret == -EAGAIN) {
                 /* Erase failed immediately. Refile it on the list */
-                D1(printk(KERN_DEBUG "Erase at 0x%08x failed: %d. Refiling on erase_pending_list\n", jeb->offset, ret));
+                jffs2_dbg(1, "Erase at 0x%08x failed: %d. Refiling on erase_pending_list\n",
+                          jeb->offset, ret);
                 mutex_lock(&c->erase_free_sem);
                 spin_lock(&c->erase_completion_lock);
                 list_move(&jeb->list, &c->erase_pending_list);
@@ -97,9 +100,11 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
         }
 
         if (ret == -EROFS)
-                printk(KERN_WARNING "Erase at 0x%08x failed immediately: -EROFS. Is the sector locked?\n", jeb->offset);
+                pr_warn("Erase at 0x%08x failed immediately: -EROFS. Is the sector locked?\n",
+                        jeb->offset);
         else
-                printk(KERN_WARNING "Erase at 0x%08x failed immediately: errno %d\n", jeb->offset, ret);
+                pr_warn("Erase at 0x%08x failed immediately: errno %d\n",
+                        jeb->offset, ret);
 
         jffs2_erase_failed(c, jeb, bad_offset);
 }
@@ -125,13 +130,14 @@ int jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
 
                         work_done++;
                         if (!--count) {
-                                D1(printk(KERN_DEBUG "Count reached. jffs2_erase_pending_blocks leaving\n"));
+                                jffs2_dbg(1, "Count reached. jffs2_erase_pending_blocks leaving\n");
                                 goto done;
                         }
 
                 } else if (!list_empty(&c->erase_pending_list)) {
                         jeb = list_entry(c->erase_pending_list.next, struct jffs2_eraseblock, list);
-                        D1(printk(KERN_DEBUG "Starting erase of pending block 0x%08x\n", jeb->offset));
+                        jffs2_dbg(1, "Starting erase of pending block 0x%08x\n",
+                                  jeb->offset);
                         list_del(&jeb->list);
                         c->erasing_size += c->sector_size;
                         c->wasted_size -= jeb->wasted_size;
@@ -159,13 +165,13 @@ int jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
         spin_unlock(&c->erase_completion_lock);
         mutex_unlock(&c->erase_free_sem);
  done:
-        D1(printk(KERN_DEBUG "jffs2_erase_pending_blocks completed\n"));
+        jffs2_dbg(1, "jffs2_erase_pending_blocks completed\n");
         return work_done;
 }
 
 static void jffs2_erase_succeeded(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
 {
-        D1(printk(KERN_DEBUG "Erase completed successfully at 0x%08x\n", jeb->offset));
+        jffs2_dbg(1, "Erase completed successfully at 0x%08x\n", jeb->offset);
         mutex_lock(&c->erase_free_sem);
         spin_lock(&c->erase_completion_lock);
         list_move_tail(&jeb->list, &c->erase_complete_list);
@@ -214,7 +220,7 @@ static void jffs2_erase_callback(struct erase_info *instr)
         struct erase_priv_struct *priv = (void *)instr->priv;
 
         if(instr->state != MTD_ERASE_DONE) {
-                printk(KERN_WARNING "Erase at 0x%08llx finished, but state != MTD_ERASE_DONE. State is 0x%x instead.\n",
+                pr_warn("Erase at 0x%08llx finished, but state != MTD_ERASE_DONE. State is 0x%x instead.\n",
                         (unsigned long long)instr->addr, instr->state);
                 jffs2_erase_failed(priv->c, priv->jeb, instr->fail_addr);
         } else {
@@ -269,8 +275,8 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
                 return;
         }
 
-        D1(printk(KERN_DEBUG "Removed nodes in range 0x%08x-0x%08x from ino #%u\n",
-                  jeb->offset, jeb->offset + c->sector_size, ic->ino));
+        jffs2_dbg(1, "Removed nodes in range 0x%08x-0x%08x from ino #%u\n",
+                  jeb->offset, jeb->offset + c->sector_size, ic->ino);
 
         D2({
                 int i=0;
@@ -281,7 +287,7 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
 
                 printk(KERN_DEBUG);
                 while(this) {
-                        printk(KERN_CONT "0x%08x(%d)->",
+                        pr_cont("0x%08x(%d)->",
                                ref_offset(this), ref_flags(this));
                         if (++i == 5) {
                                 printk(KERN_DEBUG);
@@ -289,7 +295,7 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
                         }
                         this = this->next_in_ino;
                 }
-                printk(KERN_CONT "\n");
+                pr_cont("\n");
         });
 
         switch (ic->class) {
@@ -310,7 +316,8 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
 void jffs2_free_jeb_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
 {
         struct jffs2_raw_node_ref *block, *ref;
-        D1(printk(KERN_DEBUG "Freeing all node refs for eraseblock offset 0x%08x\n", jeb->offset));
+        jffs2_dbg(1, "Freeing all node refs for eraseblock offset 0x%08x\n",
+                  jeb->offset);
 
         block = ref = jeb->first_node;
 
@@ -342,12 +349,13 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
                         &ebuf, NULL);
         if (ret != -EOPNOTSUPP) {
                 if (ret) {
-                        D1(printk(KERN_DEBUG "MTD point failed %d\n", ret));
+                        jffs2_dbg(1, "MTD point failed %d\n", ret);
                         goto do_flash_read;
                 }
                 if (retlen < c->sector_size) {
                         /* Don't muck about if it won't let us point to the whole erase sector */
-                        D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", retlen));
+                        jffs2_dbg(1, "MTD point returned len too short: 0x%zx\n",
+                                  retlen);
                         mtd_unpoint(c->mtd, jeb->offset, retlen);
                         goto do_flash_read;
                 }
@@ -359,8 +367,10 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
                 } while(--retlen);
                 mtd_unpoint(c->mtd, jeb->offset, c->sector_size);
                 if (retlen) {
-                        printk(KERN_WARNING "Newly-erased block contained word 0x%lx at offset 0x%08tx\n",
-                               *wordebuf, jeb->offset + c->sector_size-retlen*sizeof(*wordebuf));
+                        pr_warn("Newly-erased block contained word 0x%lx at offset 0x%08tx\n",
+                                *wordebuf,
+                                jeb->offset +
+                                c->sector_size-retlen * sizeof(*wordebuf));
                         return -EIO;
                 }
                 return 0;
@@ -368,11 +378,12 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
  do_flash_read:
         ebuf = kmalloc(PAGE_SIZE, GFP_KERNEL);
         if (!ebuf) {
-                printk(KERN_WARNING "Failed to allocate page buffer for verifying erase at 0x%08x. Refiling\n", jeb->offset);
+                pr_warn("Failed to allocate page buffer for verifying erase at 0x%08x. Refiling\n",
+                        jeb->offset);
                 return -EAGAIN;
         }
 
-        D1(printk(KERN_DEBUG "Verifying erase at 0x%08x\n", jeb->offset));
+        jffs2_dbg(1, "Verifying erase at 0x%08x\n", jeb->offset);
 
         for (ofs = jeb->offset; ofs < jeb->offset + c->sector_size; ) {
                 uint32_t readlen = min((uint32_t)PAGE_SIZE, jeb->offset + c->sector_size - ofs);
@@ -382,12 +393,14 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
 
                 ret = mtd_read(c->mtd, ofs, readlen, &retlen, ebuf);
                 if (ret) {
-                        printk(KERN_WARNING "Read of newly-erased block at 0x%08x failed: %d. Putting on bad_list\n", ofs, ret);
+                        pr_warn("Read of newly-erased block at 0x%08x failed: %d. Putting on bad_list\n",
+                                ofs, ret);
                         ret = -EIO;
                         goto fail;
                 }
                 if (retlen != readlen) {
-                        printk(KERN_WARNING "Short read from newly-erased block at 0x%08x. Wanted %d, got %zd\n", ofs, readlen, retlen);
+                        pr_warn("Short read from newly-erased block at 0x%08x. Wanted %d, got %zd\n",
+                                ofs, readlen, retlen);
                         ret = -EIO;
                         goto fail;
                 }
@@ -396,7 +409,8 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
                         unsigned long *datum = ebuf + i;
                         if (*datum + 1) {
                                 *bad_offset += i;
-                                printk(KERN_WARNING "Newly-erased block contained word 0x%lx at offset 0x%08x\n", *datum, *bad_offset);
+                                pr_warn("Newly-erased block contained word 0x%lx at offset 0x%08x\n",
+                                        *datum, *bad_offset);
                                 ret = -EIO;
                                 goto fail;
                         }
@@ -422,7 +436,7 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
         }
 
         /* Write the erase complete marker */
-        D1(printk(KERN_DEBUG "Writing erased marker to block at 0x%08x\n", jeb->offset));
+        jffs2_dbg(1, "Writing erased marker to block at 0x%08x\n", jeb->offset);
         bad_offset = jeb->offset;
 
         /* Cleanmarker in oob area or no cleanmarker at all ? */
@@ -451,10 +465,10 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
 
                 if (ret || retlen != sizeof(marker)) {
                         if (ret)
-                                printk(KERN_WARNING "Write clean marker to block at 0x%08x failed: %d\n",
+                                pr_warn("Write clean marker to block at 0x%08x failed: %d\n",
                                        jeb->offset, ret);
                         else
-                                printk(KERN_WARNING "Short write to newly-erased block at 0x%08x: Wanted %zd, got %zd\n",
+                                pr_warn("Short write to newly-erased block at 0x%08x: Wanted %zd, got %zd\n",
                                        jeb->offset, sizeof(marker), retlen);
 
                         goto filebad;
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index 61e6723535b9..db3889ba8818 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/fs.h>
 #include <linux/time.h>
@@ -85,7 +87,8 @@ static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg)
         unsigned char *pg_buf;
         int ret;
 
-        D2(printk(KERN_DEBUG "jffs2_do_readpage_nolock(): ino #%lu, page at offset 0x%lx\n", inode->i_ino, pg->index << PAGE_CACHE_SHIFT));
+        jffs2_dbg(2, "%s(): ino #%lu, page at offset 0x%lx\n",
+                  __func__, inode->i_ino, pg->index << PAGE_CACHE_SHIFT);
 
         BUG_ON(!PageLocked(pg));
 
@@ -105,7 +108,7 @@ static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg)
         flush_dcache_page(pg);
         kunmap(pg);
 
-        D2(printk(KERN_DEBUG "readpage finished\n"));
+        jffs2_dbg(2, "readpage finished\n");
         return ret;
 }
 
@@ -144,7 +147,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
                 return -ENOMEM;
         *pagep = pg;
 
-        D1(printk(KERN_DEBUG "jffs2_write_begin()\n"));
+        jffs2_dbg(1, "%s()\n", __func__);
 
         if (pageofs > inode->i_size) {
                 /* Make new hole frag from old EOF to new page */
@@ -153,8 +156,8 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
                 struct jffs2_full_dnode *fn;
                 uint32_t alloc_len;
 
-                D1(printk(KERN_DEBUG "Writing new hole frag 0x%x-0x%x between current EOF and new page\n",
-                          (unsigned int)inode->i_size, pageofs));
+                jffs2_dbg(1, "Writing new hole frag 0x%x-0x%x between current EOF and new page\n",
+                          (unsigned int)inode->i_size, pageofs);
 
                 ret = jffs2_reserve_space(c, sizeof(ri), &alloc_len,
                                           ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
@@ -198,7 +201,8 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
                         f->metadata = NULL;
                 }
                 if (ret) {
-                        D1(printk(KERN_DEBUG "Eep. add_full_dnode_to_inode() failed in write_begin, returned %d\n", ret));
+                        jffs2_dbg(1, "Eep. add_full_dnode_to_inode() failed in write_begin, returned %d\n",
+                                  ret);
                         jffs2_mark_node_obsolete(c, fn->raw);
                         jffs2_free_full_dnode(fn);
                         jffs2_complete_reservation(c);
@@ -222,7 +226,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
                 if (ret)
                         goto out_page;
         }
-        D1(printk(KERN_DEBUG "end write_begin(). pg->flags %lx\n", pg->flags));
+        jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags);
         return ret;
 
 out_page:
@@ -248,8 +252,9 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping,
         int ret = 0;
         uint32_t writtenlen = 0;
 
-        D1(printk(KERN_DEBUG "jffs2_write_end(): ino #%lu, page at 0x%lx, range %d-%d, flags %lx\n",
-                  inode->i_ino, pg->index << PAGE_CACHE_SHIFT, start, end, pg->flags));
+        jffs2_dbg(1, "%s(): ino #%lu, page at 0x%lx, range %d-%d, flags %lx\n",
+                  __func__, inode->i_ino, pg->index << PAGE_CACHE_SHIFT,
+                  start, end, pg->flags);
 
         /* We need to avoid deadlock with page_cache_read() in
            jffs2_garbage_collect_pass(). So the page must be
@@ -268,7 +273,8 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping,
         ri = jffs2_alloc_raw_inode();
 
         if (!ri) {
-                D1(printk(KERN_DEBUG "jffs2_write_end(): Allocation of raw inode failed\n"));
+                jffs2_dbg(1, "%s(): Allocation of raw inode failed\n",
+                          __func__);
                 unlock_page(pg);
                 page_cache_release(pg);
                 return -ENOMEM;
@@ -315,13 +321,14 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping,
                 /* generic_file_write has written more to the page cache than we've
                    actually written to the medium. Mark the page !Uptodate so that
                    it gets reread */
-                D1(printk(KERN_DEBUG "jffs2_write_end(): Not all bytes written. Marking page !uptodate\n"));
+                jffs2_dbg(1, "%s(): Not all bytes written. Marking page !uptodate\n",
+                        __func__);
                 SetPageError(pg);
                 ClearPageUptodate(pg);
         }
 
-        D1(printk(KERN_DEBUG "jffs2_write_end() returning %d\n",
-                                        writtenlen > 0 ? writtenlen : ret));
+        jffs2_dbg(1, "%s() returning %d\n",
+                  __func__, writtenlen > 0 ? writtenlen : ret);
         unlock_page(pg);
         page_cache_release(pg);
         return writtenlen > 0 ? writtenlen : ret;
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index c0d5c9d770da..bb6f993ebca9 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/capability.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
@@ -39,7 +41,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
         int ret;
         int alloc_type = ALLOC_NORMAL;
 
-        D1(printk(KERN_DEBUG "jffs2_setattr(): ino #%lu\n", inode->i_ino));
+        jffs2_dbg(1, "%s(): ino #%lu\n", __func__, inode->i_ino);
 
         /* Special cases - we don't want more than one data node
            for these types on the medium at any time. So setattr
@@ -50,7 +52,8 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
                 /* For these, we don't actually need to read the old node */
                 mdatalen = jffs2_encode_dev(&dev, inode->i_rdev);
                 mdata = (char *)&dev;
-                D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of kdev_t\n", mdatalen));
+                jffs2_dbg(1, "%s(): Writing %d bytes of kdev_t\n",
+                          __func__, mdatalen);
         } else if (S_ISLNK(inode->i_mode)) {
                 mutex_lock(&f->sem);
                 mdatalen = f->metadata->size;
@@ -66,7 +69,8 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
                         return ret;
                 }
                 mutex_unlock(&f->sem);
-                D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of symlink target\n", mdatalen));
+                jffs2_dbg(1, "%s(): Writing %d bytes of symlink target\n",
+                          __func__, mdatalen);
         }
 
         ri = jffs2_alloc_raw_inode();
@@ -233,7 +237,8 @@ void jffs2_evict_inode (struct inode *inode)
         struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
         struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
 
-        D1(printk(KERN_DEBUG "jffs2_evict_inode(): ino #%lu mode %o\n", inode->i_ino, inode->i_mode));
+        jffs2_dbg(1, "%s(): ino #%lu mode %o\n",
+                  __func__, inode->i_ino, inode->i_mode);
         truncate_inode_pages(&inode->i_data, 0);
         end_writeback(inode);
         jffs2_do_clear_inode(c, f);
@@ -249,7 +254,7 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
         dev_t rdev = 0;
         int ret;
 
-        D1(printk(KERN_DEBUG "jffs2_iget(): ino == %lu\n", ino));
+        jffs2_dbg(1, "%s(): ino == %lu\n", __func__, ino);
 
         inode = iget_locked(sb, ino);
         if (!inode)
@@ -317,14 +322,16 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
                 /* Read the device numbers from the media */
                 if (f->metadata->size != sizeof(jdev.old_id) &&
                     f->metadata->size != sizeof(jdev.new_id)) {
-                        printk(KERN_NOTICE "Device node has strange size %d\n", f->metadata->size);
+                        pr_notice("Device node has strange size %d\n",
+                                  f->metadata->size);
                         goto error_io;
                 }
-                D1(printk(KERN_DEBUG "Reading device numbers from flash\n"));
+                jffs2_dbg(1, "Reading device numbers from flash\n");
                 ret = jffs2_read_dnode(c, f, f->metadata, (char *)&jdev, 0, f->metadata->size);
                 if (ret < 0) {
                         /* Eep */
-                        printk(KERN_NOTICE "Read device numbers for inode %lu failed\n", (unsigned long)inode->i_ino);
+                        pr_notice("Read device numbers for inode %lu failed\n",
+                                  (unsigned long)inode->i_ino);
                         goto error;
                 }
                 if (f->metadata->size == sizeof(jdev.old_id))
@@ -339,12 +346,13 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
                 break;
 
         default:
-                printk(KERN_WARNING "jffs2_read_inode(): Bogus imode %o for ino %lu\n", inode->i_mode, (unsigned long)inode->i_ino);
+                pr_warn("%s(): Bogus i_mode %o for ino %lu\n",
+                        __func__, inode->i_mode, (unsigned long)inode->i_ino);
         }
 
         mutex_unlock(&f->sem);
 
-        D1(printk(KERN_DEBUG "jffs2_read_inode() returning\n"));
+        jffs2_dbg(1, "jffs2_read_inode() returning\n");
         unlock_new_inode(inode);
         return inode;
 
@@ -362,11 +370,13 @@ void jffs2_dirty_inode(struct inode *inode, int flags)
         struct iattr iattr;
 
         if (!(inode->i_state & I_DIRTY_DATASYNC)) {
-                D2(printk(KERN_DEBUG "jffs2_dirty_inode() not calling setattr() for ino #%lu\n", inode->i_ino));
+                jffs2_dbg(2, "%s(): not calling setattr() for ino #%lu\n",
+                          __func__, inode->i_ino);
                 return;
         }
 
-        D1(printk(KERN_DEBUG "jffs2_dirty_inode() calling setattr() for ino #%lu\n", inode->i_ino));
+        jffs2_dbg(1, "%s(): calling setattr() for ino #%lu\n",
+                  __func__, inode->i_ino);
 
         iattr.ia_valid = ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_MTIME|ATTR_CTIME;
         iattr.ia_mode = inode->i_mode;
@@ -414,7 +424,8 @@ struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode, struct jffs2_r
         struct jffs2_inode_info *f;
         int ret;
 
-        D1(printk(KERN_DEBUG "jffs2_new_inode(): dir_i %ld, mode 0x%x\n", dir_i->i_ino, mode));
+        jffs2_dbg(1, "%s(): dir_i %ld, mode 0x%x\n",
+                  __func__, dir_i->i_ino, mode);
 
         c = JFFS2_SB_INFO(sb);
 
@@ -504,11 +515,11 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
 
 #ifndef CONFIG_JFFS2_FS_WRITEBUFFER
         if (c->mtd->type == MTD_NANDFLASH) {
-                printk(KERN_ERR "jffs2: Cannot operate on NAND flash unless jffs2 NAND support is compiled in.\n");
+                pr_err("Cannot operate on NAND flash unless jffs2 NAND support is compiled in\n");
                 return -EINVAL;
         }
         if (c->mtd->type == MTD_DATAFLASH) {
-                printk(KERN_ERR "jffs2: Cannot operate on DataFlash unless jffs2 DataFlash support is compiled in.\n");
+                pr_err("Cannot operate on DataFlash unless jffs2 DataFlash support is compiled in\n");
                 return -EINVAL;
         }
 #endif
@@ -522,12 +533,13 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
          */
         if ((c->sector_size * blocks) != c->flash_size) {
                 c->flash_size = c->sector_size * blocks;
-                printk(KERN_INFO "jffs2: Flash size not aligned to erasesize, reducing to %dKiB\n",
+                pr_info("Flash size not aligned to erasesize, reducing to %dKiB\n",
                         c->flash_size / 1024);
         }
 
         if (c->flash_size < 5*c->sector_size) {
-                printk(KERN_ERR "jffs2: Too few erase blocks (%d)\n", c->flash_size / c->sector_size);
+                pr_err("Too few erase blocks (%d)\n",
+                       c->flash_size / c->sector_size);
                 return -EINVAL;
         }
 
@@ -550,17 +562,17 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
         if ((ret = jffs2_do_mount_fs(c)))
                 goto out_inohash;
 
-        D1(printk(KERN_DEBUG "jffs2_do_fill_super(): Getting root inode\n"));
+        jffs2_dbg(1, "%s(): Getting root inode\n", __func__);
         root_i = jffs2_iget(sb, 1);
         if (IS_ERR(root_i)) {
-                D1(printk(KERN_WARNING "get root inode failed\n"));
+                jffs2_dbg(1, "get root inode failed\n");
                 ret = PTR_ERR(root_i);
                 goto out_root;
         }
 
         ret = -ENOMEM;
 
-        D1(printk(KERN_DEBUG "jffs2_do_fill_super(): d_alloc_root()\n"));
+        jffs2_dbg(1, "%s(): d_make_root()\n", __func__);
         sb->s_root = d_make_root(root_i);
         if (!sb->s_root)
                 goto out_root;
@@ -618,20 +630,21 @@ struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
                 */
                 inode = ilookup(OFNI_BS_2SFFJ(c), inum);
                 if (!inode) {
-                        D1(printk(KERN_DEBUG "ilookup() failed for ino #%u; inode is probably deleted.\n",
-                                  inum));
+                        jffs2_dbg(1, "ilookup() failed for ino #%u; inode is probably deleted.\n",
+                                  inum);
 
                         spin_lock(&c->inocache_lock);
                         ic = jffs2_get_ino_cache(c, inum);
                         if (!ic) {
-                                D1(printk(KERN_DEBUG "Inode cache for ino #%u is gone.\n", inum));
+                                jffs2_dbg(1, "Inode cache for ino #%u is gone\n",
+                                          inum);
                                 spin_unlock(&c->inocache_lock);
                                 return NULL;
                         }
                         if (ic->state != INO_STATE_CHECKEDABSENT) {
                                 /* Wait for progress. Don't just loop */
-                                D1(printk(KERN_DEBUG "Waiting for ino #%u in state %d\n",
-                                          ic->ino, ic->state));
+                                jffs2_dbg(1, "Waiting for ino #%u in state %d\n",
+                                          ic->ino, ic->state);
                                 sleep_on_spinunlock(&c->inocache_wq, &c->inocache_lock);
                         } else {
                                 spin_unlock(&c->inocache_lock);
@@ -649,8 +662,8 @@ struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
                         return ERR_CAST(inode);
         }
         if (is_bad_inode(inode)) {
-                printk(KERN_NOTICE "Eep. read_inode() failed for ino #%u. unlinked %d\n",
-                       inum, unlinked);
+                pr_notice("Eep. read_inode() failed for ino #%u. unlinked %d\n",
+                          inum, unlinked);
                 /* NB. This will happen again. We need to do something appropriate here. */
                 iput(inode);
                 return ERR_PTR(-EIO);
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index 31dce611337c..ad271c70aa25 100644
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/mtd/mtd.h>
 #include <linux/slab.h>
@@ -51,44 +53,44 @@ static struct jffs2_eraseblock *jffs2_find_gc_block(struct jffs2_sb_info *c)
            number of free blocks is low. */
 again:
         if (!list_empty(&c->bad_used_list) && c->nr_free_blocks > c->resv_blocks_gcbad) {
-                D1(printk(KERN_DEBUG "Picking block from bad_used_list to GC next\n"));
+                jffs2_dbg(1, "Picking block from bad_used_list to GC next\n");
                 nextlist = &c->bad_used_list;
         } else if (n < 50 && !list_empty(&c->erasable_list)) {
                 /* Note that most of them will have gone directly to be erased.
                    So don't favour the erasable_list _too_ much. */
-                D1(printk(KERN_DEBUG "Picking block from erasable_list to GC next\n"));
+                jffs2_dbg(1, "Picking block from erasable_list to GC next\n");
                 nextlist = &c->erasable_list;
         } else if (n < 110 && !list_empty(&c->very_dirty_list)) {
                 /* Most of the time, pick one off the very_dirty list */
-                D1(printk(KERN_DEBUG "Picking block from very_dirty_list to GC next\n"));
+                jffs2_dbg(1, "Picking block from very_dirty_list to GC next\n");
                 nextlist = &c->very_dirty_list;
         } else if (n < 126 && !list_empty(&c->dirty_list)) {
-                D1(printk(KERN_DEBUG "Picking block from dirty_list to GC next\n"));
+                jffs2_dbg(1, "Picking block from dirty_list to GC next\n");
                 nextlist = &c->dirty_list;
         } else if (!list_empty(&c->clean_list)) {
-                D1(printk(KERN_DEBUG "Picking block from clean_list to GC next\n"));
+                jffs2_dbg(1, "Picking block from clean_list to GC next\n");
                 nextlist = &c->clean_list;
         } else if (!list_empty(&c->dirty_list)) {
-                D1(printk(KERN_DEBUG "Picking block from dirty_list to GC next (clean_list was empty)\n"));
+                jffs2_dbg(1, "Picking block from dirty_list to GC next (clean_list was empty)\n");
 
                 nextlist = &c->dirty_list;
         } else if (!list_empty(&c->very_dirty_list)) {
-                D1(printk(KERN_DEBUG "Picking block from very_dirty_list to GC next (clean_list and dirty_list were empty)\n"));
+                jffs2_dbg(1, "Picking block from very_dirty_list to GC next (clean_list and dirty_list were empty)\n");
                 nextlist = &c->very_dirty_list;
         } else if (!list_empty(&c->erasable_list)) {
-                D1(printk(KERN_DEBUG "Picking block from erasable_list to GC next (clean_list and {very_,}dirty_list were empty)\n"));
+                jffs2_dbg(1, "Picking block from erasable_list to GC next (clean_list and {very_,}dirty_list were empty)\n");
 
                 nextlist = &c->erasable_list;
         } else if (!list_empty(&c->erasable_pending_wbuf_list)) {
                 /* There are blocks are wating for the wbuf sync */
-                D1(printk(KERN_DEBUG "Synching wbuf in order to reuse erasable_pending_wbuf_list blocks\n"));
+                jffs2_dbg(1, "Synching wbuf in order to reuse erasable_pending_wbuf_list blocks\n");
                 spin_unlock(&c->erase_completion_lock);
                 jffs2_flush_wbuf_pad(c);
                 spin_lock(&c->erase_completion_lock);
                 goto again;
         } else {
                 /* Eep. All were empty */
-                D1(printk(KERN_NOTICE "jffs2: No clean, dirty _or_ erasable blocks to GC from! Where are they all?\n"));
+                jffs2_dbg(1, "No clean, dirty _or_ erasable blocks to GC from! Where are they all?\n");
                 return NULL;
         }
 
@@ -97,13 +99,15 @@ again:
         c->gcblock = ret;
         ret->gc_node = ret->first_node;
         if (!ret->gc_node) {
-                printk(KERN_WARNING "Eep. ret->gc_node for block at 0x%08x is NULL\n", ret->offset);
+                pr_warn("Eep. ret->gc_node for block at 0x%08x is NULL\n",
+                        ret->offset);
                 BUG();
         }
 
         /* Have we accidentally picked a clean block with wasted space ? */
         if (ret->wasted_size) {
-                D1(printk(KERN_DEBUG "Converting wasted_size %08x to dirty_size\n", ret->wasted_size));
+                jffs2_dbg(1, "Converting wasted_size %08x to dirty_size\n",
+                          ret->wasted_size);
                 ret->dirty_size += ret->wasted_size;
                 c->wasted_size -= ret->wasted_size;
                 c->dirty_size += ret->wasted_size;
@@ -140,8 +144,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 
                 /* checked_ino is protected by the alloc_sem */
                 if (c->checked_ino > c->highest_ino && xattr) {
-                        printk(KERN_CRIT "Checked all inodes but still 0x%x bytes of unchecked space?\n",
-                               c->unchecked_size);
+                        pr_crit("Checked all inodes but still 0x%x bytes of unchecked space?\n",
+                                c->unchecked_size);
                         jffs2_dbg_dump_block_lists_nolock(c);
                         spin_unlock(&c->erase_completion_lock);
                         mutex_unlock(&c->alloc_sem);
@@ -163,8 +167,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                 }
 
                 if (!ic->pino_nlink) {
-                        D1(printk(KERN_DEBUG "Skipping check of ino #%d with nlink/pino zero\n",
-                                  ic->ino));
+                        jffs2_dbg(1, "Skipping check of ino #%d with nlink/pino zero\n",
+                                  ic->ino);
                         spin_unlock(&c->inocache_lock);
                         jffs2_xattr_delete_inode(c, ic);
                         continue;
@@ -172,13 +176,15 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                 switch(ic->state) {
                 case INO_STATE_CHECKEDABSENT:
                 case INO_STATE_PRESENT:
-                        D1(printk(KERN_DEBUG "Skipping ino #%u already checked\n", ic->ino));
+                        jffs2_dbg(1, "Skipping ino #%u already checked\n",
+                                  ic->ino);
                         spin_unlock(&c->inocache_lock);
                         continue;
 
                 case INO_STATE_GC:
                 case INO_STATE_CHECKING:
-                        printk(KERN_WARNING "Inode #%u is in state %d during CRC check phase!\n", ic->ino, ic->state);
+                        pr_warn("Inode #%u is in state %d during CRC check phase!\n",
+                                ic->ino, ic->state);
                         spin_unlock(&c->inocache_lock);
                         BUG();
 
@@ -186,7 +192,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                         /* We need to wait for it to finish, lest we move on
                            and trigger the BUG() above while we haven't yet
                            finished checking all its nodes */
-                        D1(printk(KERN_DEBUG "Waiting for ino #%u to finish reading\n", ic->ino));
+                        jffs2_dbg(1, "Waiting for ino #%u to finish reading\n",
+                                  ic->ino);
                         /* We need to come back again for the _same_ inode. We've
                          made no progress in this case, but that should be OK */
                         c->checked_ino--;
@@ -204,11 +211,13 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                 ic->state = INO_STATE_CHECKING;
                 spin_unlock(&c->inocache_lock);
 
-                D1(printk(KERN_DEBUG "jffs2_garbage_collect_pass() triggering inode scan of ino#%u\n", ic->ino));
+                jffs2_dbg(1, "%s(): triggering inode scan of ino#%u\n",
+                          __func__, ic->ino);
 
                 ret = jffs2_do_crccheck_inode(c, ic);
                 if (ret)
-                        printk(KERN_WARNING "Returned error for crccheck of ino #%u. Expect badness...\n", ic->ino);
+                        pr_warn("Returned error for crccheck of ino #%u. Expect badness...\n",
+                                ic->ino);
 
                 jffs2_set_inocache_state(c, ic, INO_STATE_CHECKEDABSENT);
                 mutex_unlock(&c->alloc_sem);
@@ -220,11 +229,11 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
             !list_empty(&c->erase_pending_list)) {
                 spin_unlock(&c->erase_completion_lock);
                 mutex_unlock(&c->alloc_sem);
-                D1(printk(KERN_DEBUG "jffs2_garbage_collect_pass() erasing pending blocks\n"));
+                jffs2_dbg(1, "%s(): erasing pending blocks\n", __func__);
                 if (jffs2_erase_pending_blocks(c, 1))
                         return 0;
 
-                D1(printk(KERN_DEBUG "No progress from erasing blocks; doing GC anyway\n"));
+                jffs2_dbg(1, "No progress from erasing block; doing GC anyway\n");
                 spin_lock(&c->erase_completion_lock);
                 mutex_lock(&c->alloc_sem);
         }
@@ -242,13 +251,14 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                         mutex_unlock(&c->alloc_sem);
                         return -EAGAIN;
                 }
-                D1(printk(KERN_NOTICE "jffs2: Couldn't find erase block to garbage collect!\n"));
+                jffs2_dbg(1, "Couldn't find erase block to garbage collect!\n");
                 spin_unlock(&c->erase_completion_lock);
                 mutex_unlock(&c->alloc_sem);
                 return -EIO;
         }
 
-        D1(printk(KERN_DEBUG "GC from block %08x, used_size %08x, dirty_size %08x, free_size %08x\n", jeb->offset, jeb->used_size, jeb->dirty_size, jeb->free_size));
+        jffs2_dbg(1, "GC from block %08x, used_size %08x, dirty_size %08x, free_size %08x\n",
+                  jeb->offset, jeb->used_size, jeb->dirty_size, jeb->free_size);
         D1(if (c->nextblock)
            printk(KERN_DEBUG "Nextblock at  %08x, used_size %08x, dirty_size %08x, wasted_size %08x, free_size %08x\n", c->nextblock->offset, c->nextblock->used_size, c->nextblock->dirty_size, c->nextblock->wasted_size, c->nextblock->free_size));
 
@@ -261,12 +271,14 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
         gcblock_dirty = jeb->dirty_size;
 
         while(ref_obsolete(raw)) {
-                D1(printk(KERN_DEBUG "Node at 0x%08x is obsolete... skipping\n", ref_offset(raw)));
+                jffs2_dbg(1, "Node at 0x%08x is obsolete... skipping\n",
+                          ref_offset(raw));
                 raw = ref_next(raw);
                 if (unlikely(!raw)) {
-                        printk(KERN_WARNING "eep. End of raw list while still supposedly nodes to GC\n");
-                        printk(KERN_WARNING "erase block at 0x%08x. free_size 0x%08x, dirty_size 0x%08x, used_size 0x%08x\n",
-                               jeb->offset, jeb->free_size, jeb->dirty_size, jeb->used_size);
+                        pr_warn("eep. End of raw list while still supposedly nodes to GC\n");
+                        pr_warn("erase block at 0x%08x. free_size 0x%08x, dirty_size 0x%08x, used_size 0x%08x\n",
+                                jeb->offset, jeb->free_size,
+                                jeb->dirty_size, jeb->used_size);
                         jeb->gc_node = raw;
                         spin_unlock(&c->erase_completion_lock);
                         mutex_unlock(&c->alloc_sem);
@@ -275,7 +287,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
         }
         jeb->gc_node = raw;
 
-        D1(printk(KERN_DEBUG "Going to garbage collect node at 0x%08x\n", ref_offset(raw)));
+        jffs2_dbg(1, "Going to garbage collect node at 0x%08x\n",
+                  ref_offset(raw));
 
         if (!raw->next_in_ino) {
                 /* Inode-less node. Clean marker, snapshot or something like that */
@@ -316,7 +329,9 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 
         spin_unlock(&c->erase_completion_lock);
 
-        D1(printk(KERN_DEBUG "jffs2_garbage_collect_pass collecting from block @0x%08x. Node @0x%08x(%d), ino #%u\n", jeb->offset, ref_offset(raw), ref_flags(raw), ic->ino));
+        jffs2_dbg(1, "%s(): collecting from block @0x%08x. Node @0x%08x(%d), ino #%u\n",
+                  __func__, jeb->offset, ref_offset(raw), ref_flags(raw),
+                  ic->ino);
 
         /* Three possibilities:
            1. Inode is already in-core. We must iget it and do proper
@@ -336,8 +351,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                 if (ref_flags(raw) == REF_PRISTINE)
                         ic->state = INO_STATE_GC;
                 else {
-                        D1(printk(KERN_DEBUG "Ino #%u is absent but node not REF_PRISTINE. Reading.\n",
-                                  ic->ino));
+                        jffs2_dbg(1, "Ino #%u is absent but node not REF_PRISTINE. Reading.\n",
+                                  ic->ino);
                 }
                 break;
 
@@ -353,8 +368,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                    we're holding the alloc_sem, no other garbage collection
                    can happen.
                 */
-                printk(KERN_CRIT "Inode #%u already in state %d in jffs2_garbage_collect_pass()!\n",
-                       ic->ino, ic->state);
+                pr_crit("Inode #%u already in state %d in jffs2_garbage_collect_pass()!\n",
+                        ic->ino, ic->state);
                 mutex_unlock(&c->alloc_sem);
                 spin_unlock(&c->inocache_lock);
                 BUG();
@@ -367,8 +382,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                    drop the alloc_sem before sleeping. */
 
                 mutex_unlock(&c->alloc_sem);
-                D1(printk(KERN_DEBUG "jffs2_garbage_collect_pass() waiting for ino #%u in state %d\n",
-                          ic->ino, ic->state));
+                jffs2_dbg(1, "%s(): waiting for ino #%u in state %d\n",
+                          __func__, ic->ino, ic->state);
                 sleep_on_spinunlock(&c->inocache_wq, &c->inocache_lock);
                 /* And because we dropped the alloc_sem we must start again from the
                    beginning. Ponder chance of livelock here -- we're returning success
@@ -433,7 +448,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
  test_gcnode:
         if (jeb->dirty_size == gcblock_dirty && !ref_obsolete(jeb->gc_node)) {
                 /* Eep. This really should never happen. GC is broken */
-                printk(KERN_ERR "Error garbage collecting node at %08x!\n", ref_offset(jeb->gc_node));
+                pr_err("Error garbage collecting node at %08x!\n",
+                       ref_offset(jeb->gc_node));
                 ret = -ENOSPC;
         }
  release_sem:
@@ -445,7 +461,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 
  eraseit:
         if (c->gcblock && !c->gcblock->used_size) {
-                D1(printk(KERN_DEBUG "Block at 0x%08x completely obsoleted by GC. Moving to erase_pending_list\n", c->gcblock->offset));
+                jffs2_dbg(1, "Block at 0x%08x completely obsoleted by GC. Moving to erase_pending_list\n",
+                          c->gcblock->offset);
                 /* We're GC'ing an empty block? */
                 list_add_tail(&c->gcblock->list, &c->erase_pending_list);
                 c->gcblock = NULL;
@@ -475,12 +492,12 @@ static int jffs2_garbage_collect_live(struct jffs2_sb_info *c,  struct jffs2_era
 
         if (c->gcblock != jeb) {
                 spin_unlock(&c->erase_completion_lock);
-                D1(printk(KERN_DEBUG "GC block is no longer gcblock. Restart\n"));
+                jffs2_dbg(1, "GC block is no longer gcblock. Restart\n");
                 goto upnout;
         }
         if (ref_obsolete(raw)) {
                 spin_unlock(&c->erase_completion_lock);
-                D1(printk(KERN_DEBUG "node to be GC'd was obsoleted in the meantime.\n"));
+                jffs2_dbg(1, "node to be GC'd was obsoleted in the meantime.\n");
                 /* They'll call again */
                 goto upnout;
         }
@@ -536,10 +553,10 @@ static int jffs2_garbage_collect_live(struct jffs2_sb_info *c,  struct jffs2_era
         } else if (fd) {
                 ret = jffs2_garbage_collect_deletion_dirent(c, jeb, f, fd);
         } else {
-                printk(KERN_WARNING "Raw node at 0x%08x wasn't in node lists for ino #%u\n",
-                       ref_offset(raw), f->inocache->ino);
+                pr_warn("Raw node at 0x%08x wasn't in node lists for ino #%u\n",
+                        ref_offset(raw), f->inocache->ino);
                 if (ref_obsolete(raw)) {
-                        printk(KERN_WARNING "But it's obsolete so we don't mind too much\n");
+                        pr_warn("But it's obsolete so we don't mind too much\n");
                 } else {
                         jffs2_dbg_dump_node(c, ref_offset(raw));
                         BUG();
@@ -562,7 +579,8 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
         uint32_t crc, rawlen;
         int retried = 0;
 
-        D1(printk(KERN_DEBUG "Going to GC REF_PRISTINE node at 0x%08x\n", ref_offset(raw)));
+        jffs2_dbg(1, "Going to GC REF_PRISTINE node at 0x%08x\n",
+                  ref_offset(raw));
 
         alloclen = rawlen = ref_totlen(c, c->gcblock, raw);
 
@@ -595,8 +613,8 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
 
         crc = crc32(0, node, sizeof(struct jffs2_unknown_node)-4);
         if (je32_to_cpu(node->u.hdr_crc) != crc) {
-                printk(KERN_WARNING "Header CRC failed on REF_PRISTINE node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
-                       ref_offset(raw), je32_to_cpu(node->u.hdr_crc), crc);
+                pr_warn("Header CRC failed on REF_PRISTINE node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
+                        ref_offset(raw), je32_to_cpu(node->u.hdr_crc), crc);
                 goto bail;
         }
 
@@ -604,16 +622,18 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
         case JFFS2_NODETYPE_INODE:
                 crc = crc32(0, node, sizeof(node->i)-8);
                 if (je32_to_cpu(node->i.node_crc) != crc) {
-                        printk(KERN_WARNING "Node CRC failed on REF_PRISTINE data node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
-                               ref_offset(raw), je32_to_cpu(node->i.node_crc), crc);
+                        pr_warn("Node CRC failed on REF_PRISTINE data node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
+                                ref_offset(raw), je32_to_cpu(node->i.node_crc),
+                                crc);
                         goto bail;
                 }
 
                 if (je32_to_cpu(node->i.dsize)) {
                         crc = crc32(0, node->i.data, je32_to_cpu(node->i.csize));
                         if (je32_to_cpu(node->i.data_crc) != crc) {
-                                printk(KERN_WARNING "Data CRC failed on REF_PRISTINE data node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
-                                       ref_offset(raw), je32_to_cpu(node->i.data_crc), crc);
+                                pr_warn("Data CRC failed on REF_PRISTINE data node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
+                                        ref_offset(raw),
+                                        je32_to_cpu(node->i.data_crc), crc);
                                 goto bail;
                         }
                 }
@@ -622,21 +642,24 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
         case JFFS2_NODETYPE_DIRENT:
                 crc = crc32(0, node, sizeof(node->d)-8);
                 if (je32_to_cpu(node->d.node_crc) != crc) {
-                        printk(KERN_WARNING "Node CRC failed on REF_PRISTINE dirent node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
-                               ref_offset(raw), je32_to_cpu(node->d.node_crc), crc);
+                        pr_warn("Node CRC failed on REF_PRISTINE dirent node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
+                                ref_offset(raw),
+                                je32_to_cpu(node->d.node_crc), crc);
                         goto bail;
                 }
 
                 if (strnlen(node->d.name, node->d.nsize) != node->d.nsize) {
-                        printk(KERN_WARNING "Name in dirent node at 0x%08x contains zeroes\n", ref_offset(raw));
+                        pr_warn("Name in dirent node at 0x%08x contains zeroes\n",
+                                ref_offset(raw));
                         goto bail;
                 }
 
                 if (node->d.nsize) {
                         crc = crc32(0, node->d.name, node->d.nsize);
                         if (je32_to_cpu(node->d.name_crc) != crc) {
-                                printk(KERN_WARNING "Name CRC failed on REF_PRISTINE dirent node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
-                                       ref_offset(raw), je32_to_cpu(node->d.name_crc), crc);
+                                pr_warn("Name CRC failed on REF_PRISTINE dirent node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
+                                        ref_offset(raw),
+                                        je32_to_cpu(node->d.name_crc), crc);
                                 goto bail;
                         }
                 }
@@ -644,8 +667,8 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
         default:
                 /* If it's inode-less, we don't _know_ what it is. Just copy it intact */
                 if (ic) {
-                        printk(KERN_WARNING "Unknown node type for REF_PRISTINE node at 0x%08x: 0x%04x\n",
-                               ref_offset(raw), je16_to_cpu(node->u.nodetype));
+                        pr_warn("Unknown node type for REF_PRISTINE node at 0x%08x: 0x%04x\n",
+                                ref_offset(raw), je16_to_cpu(node->u.nodetype));
                         goto bail;
                 }
         }
@@ -657,12 +680,13 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
         ret = jffs2_flash_write(c, phys_ofs, rawlen, &retlen, (char *)node);
 
         if (ret || (retlen != rawlen)) {
-                printk(KERN_NOTICE "Write of %d bytes at 0x%08x failed. returned %d, retlen %zd\n",
-                       rawlen, phys_ofs, ret, retlen);
+                pr_notice("Write of %d bytes at 0x%08x failed. returned %d, retlen %zd\n",
+                          rawlen, phys_ofs, ret, retlen);
                 if (retlen) {
                         jffs2_add_physical_node_ref(c, phys_ofs | REF_OBSOLETE, rawlen, NULL);
                 } else {
-                        printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", phys_ofs);
+                        pr_notice("Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n",
+                                  phys_ofs);
                 }
                 if (!retried) {
                         /* Try to reallocate space and retry */
@@ -671,7 +695,7 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
 
                         retried = 1;
 
-                        D1(printk(KERN_DEBUG "Retrying failed write of REF_PRISTINE node.\n"));
+                        jffs2_dbg(1, "Retrying failed write of REF_PRISTINE node.\n");
 
                         jffs2_dbg_acct_sanity_check(c,jeb);
                         jffs2_dbg_acct_paranoia_check(c, jeb);
@@ -681,14 +705,16 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
                                                         it is only an upper estimation */
 
                         if (!ret) {
-                                D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", phys_ofs));
+                                jffs2_dbg(1, "Allocated space at 0x%08x to retry failed write.\n",
+                                          phys_ofs);
 
                                 jffs2_dbg_acct_sanity_check(c,jeb);
                                 jffs2_dbg_acct_paranoia_check(c, jeb);
 
                                 goto retry;
                         }
-                        D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret));
+                        jffs2_dbg(1, "Failed to allocate space to retry failed write: %d!\n",
+                                  ret);
                 }
 
                 if (!ret)
@@ -698,7 +724,8 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
         jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, rawlen, ic);
 
         jffs2_mark_node_obsolete(c, raw);
-        D1(printk(KERN_DEBUG "WHEEE! GC REF_PRISTINE node at 0x%08x succeeded\n", ref_offset(raw)));
+        jffs2_dbg(1, "WHEEE! GC REF_PRISTINE node at 0x%08x succeeded\n",
+                  ref_offset(raw));
 
  out_node:
         kfree(node);
@@ -725,29 +752,32 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
                 /* For these, we don't actually need to read the old node */
                 mdatalen = jffs2_encode_dev(&dev, JFFS2_F_I_RDEV(f));
                 mdata = (char *)&dev;
-                D1(printk(KERN_DEBUG "jffs2_garbage_collect_metadata(): Writing %d bytes of kdev_t\n", mdatalen));
+                jffs2_dbg(1, "%s(): Writing %d bytes of kdev_t\n",
+                          __func__, mdatalen);
         } else if (S_ISLNK(JFFS2_F_I_MODE(f))) {
                 mdatalen = fn->size;
                 mdata = kmalloc(fn->size, GFP_KERNEL);
                 if (!mdata) {
-                        printk(KERN_WARNING "kmalloc of mdata failed in jffs2_garbage_collect_metadata()\n");
+                        pr_warn("kmalloc of mdata failed in jffs2_garbage_collect_metadata()\n");
                         return -ENOMEM;
                 }
                 ret = jffs2_read_dnode(c, f, fn, mdata, 0, mdatalen);
                 if (ret) {
-                        printk(KERN_WARNING "read of old metadata failed in jffs2_garbage_collect_metadata(): %d\n", ret);
+                        pr_warn("read of old metadata failed in jffs2_garbage_collect_metadata(): %d\n",
+                                ret);
                         kfree(mdata);
                         return ret;
                 }
-                D1(printk(KERN_DEBUG "jffs2_garbage_collect_metadata(): Writing %d bites of symlink target\n", mdatalen));
+                jffs2_dbg(1, "%s(): Writing %d bites of symlink target\n",
+                          __func__, mdatalen);
 
         }
 
         ret = jffs2_reserve_space_gc(c, sizeof(ri) + mdatalen, &alloclen,
                                 JFFS2_SUMMARY_INODE_SIZE);
         if (ret) {
-                printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_metadata failed: %d\n",
-                       sizeof(ri)+ mdatalen, ret);
+                pr_warn("jffs2_reserve_space_gc of %zd bytes for garbage_collect_metadata failed: %d\n",
+                        sizeof(ri) + mdatalen, ret);
                 goto out;
         }
 
@@ -784,7 +814,7 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
         new_fn = jffs2_write_dnode(c, f, &ri, mdata, mdatalen, ALLOC_GC);
 
         if (IS_ERR(new_fn)) {
-                printk(KERN_WARNING "Error writing new dnode: %ld\n", PTR_ERR(new_fn));
+                pr_warn("Error writing new dnode: %ld\n", PTR_ERR(new_fn));
                 ret = PTR_ERR(new_fn);
                 goto out;
         }
@@ -827,14 +857,15 @@ static int jffs2_garbage_collect_dirent(struct jffs2_sb_info *c, struct jffs2_er
         ret = jffs2_reserve_space_gc(c, sizeof(rd)+rd.nsize, &alloclen,
                                 JFFS2_SUMMARY_DIRENT_SIZE(rd.nsize));
         if (ret) {
-                printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_dirent failed: %d\n",
-                       sizeof(rd)+rd.nsize, ret);
+                pr_warn("jffs2_reserve_space_gc of %zd bytes for garbage_collect_dirent failed: %d\n",
+                        sizeof(rd)+rd.nsize, ret);
                 return ret;
         }
         new_fd = jffs2_write_dirent(c, f, &rd, fd->name, rd.nsize, ALLOC_GC);
 
         if (IS_ERR(new_fd)) {
-                printk(KERN_WARNING "jffs2_write_dirent in garbage_collect_dirent failed: %ld\n", PTR_ERR(new_fd));
+                pr_warn("jffs2_write_dirent in garbage_collect_dirent failed: %ld\n",
+                        PTR_ERR(new_fd));
                 return PTR_ERR(new_fd);
         }
         jffs2_add_fd_to_list(c, new_fd, &f->dents);
@@ -887,19 +918,22 @@ static int jffs2_garbage_collect_deletion_dirent(struct jffs2_sb_info *c, struct
                         if (SECTOR_ADDR(raw->flash_offset) == SECTOR_ADDR(fd->raw->flash_offset))
                                 continue;
 
-                        D1(printk(KERN_DEBUG "Check potential deletion dirent at %08x\n", ref_offset(raw)));
+                        jffs2_dbg(1, "Check potential deletion dirent at %08x\n",
+                                  ref_offset(raw));
 
                         /* This is an obsolete node belonging to the same directory, and it's of the right
                            length. We need to take a closer look...*/
                         ret = jffs2_flash_read(c, ref_offset(raw), rawlen, &retlen, (char *)rd);
                         if (ret) {
-                                printk(KERN_WARNING "jffs2_g_c_deletion_dirent(): Read error (%d) reading obsolete node at %08x\n", ret, ref_offset(raw));
+                                pr_warn("%s(): Read error (%d) reading obsolete node at %08x\n",
+                                        __func__, ret, ref_offset(raw));
                                 /* If we can't read it, we don't need to continue to obsolete it. Continue */
                                 continue;
                         }
                         if (retlen != rawlen) {
-                                printk(KERN_WARNING "jffs2_g_c_deletion_dirent(): Short read (%zd not %u) reading header from obsolete node at %08x\n",
-                                       retlen, rawlen, ref_offset(raw));
+                                pr_warn("%s(): Short read (%zd not %u) reading header from obsolete node at %08x\n",
+                                        __func__, retlen, rawlen,
+                                        ref_offset(raw));
                                 continue;
                         }
 
@@ -923,8 +957,9 @@ static int jffs2_garbage_collect_deletion_dirent(struct jffs2_sb_info *c, struct
                            a new deletion dirent to replace it */
                         mutex_unlock(&c->erase_free_sem);
 
-                        D1(printk(KERN_DEBUG "Deletion dirent at %08x still obsoletes real dirent \"%s\" at %08x for ino #%u\n",
-                                  ref_offset(fd->raw), fd->name, ref_offset(raw), je32_to_cpu(rd->ino)));
+                        jffs2_dbg(1, "Deletion dirent at %08x still obsoletes real dirent \"%s\" at %08x for ino #%u\n",
+                                  ref_offset(fd->raw), fd->name,
+                                  ref_offset(raw), je32_to_cpu(rd->ino));
                         kfree(rd);
 
                         return jffs2_garbage_collect_dirent(c, jeb, f, fd);
@@ -947,7 +982,8 @@ static int jffs2_garbage_collect_deletion_dirent(struct jffs2_sb_info *c, struct
                 fdp = &(*fdp)->next;
         }
         if (!found) {
-                printk(KERN_WARNING "Deletion dirent \"%s\" not found in list for ino #%u\n", fd->name, f->inocache->ino);
+                pr_warn("Deletion dirent \"%s\" not found in list for ino #%u\n",
+                        fd->name, f->inocache->ino);
         }
         jffs2_mark_node_obsolete(c, fd->raw);
         jffs2_free_full_dirent(fd);
@@ -964,8 +1000,8 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
         uint32_t alloclen, ilen;
         int ret;
 
-        D1(printk(KERN_DEBUG "Writing replacement hole node for ino #%u from offset 0x%x to 0x%x\n",
-                  f->inocache->ino, start, end));
+        jffs2_dbg(1, "Writing replacement hole node for ino #%u from offset 0x%x to 0x%x\n",
+                  f->inocache->ino, start, end);
 
         memset(&ri, 0, sizeof(ri));
 
@@ -976,35 +1012,37 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
                    write it out again with the _same_ version as before */
                 ret = jffs2_flash_read(c, ref_offset(fn->raw), sizeof(ri), &readlen, (char *)&ri);
                 if (readlen != sizeof(ri) || ret) {
-                        printk(KERN_WARNING "Node read failed in jffs2_garbage_collect_hole. Ret %d, retlen %zd. Data will be lost by writing new hole node\n", ret, readlen);
+                        pr_warn("Node read failed in jffs2_garbage_collect_hole. Ret %d, retlen %zd. Data will be lost by writing new hole node\n",
+                                ret, readlen);
                         goto fill;
                 }
                 if (je16_to_cpu(ri.nodetype) != JFFS2_NODETYPE_INODE) {
-                        printk(KERN_WARNING "jffs2_garbage_collect_hole: Node at 0x%08x had node type 0x%04x instead of JFFS2_NODETYPE_INODE(0x%04x)\n",
-                               ref_offset(fn->raw),
-                               je16_to_cpu(ri.nodetype), JFFS2_NODETYPE_INODE);
+                        pr_warn("%s(): Node at 0x%08x had node type 0x%04x instead of JFFS2_NODETYPE_INODE(0x%04x)\n",
+                                __func__, ref_offset(fn->raw),
+                                je16_to_cpu(ri.nodetype), JFFS2_NODETYPE_INODE);
                         return -EIO;
                 }
                 if (je32_to_cpu(ri.totlen) != sizeof(ri)) {
-                        printk(KERN_WARNING "jffs2_garbage_collect_hole: Node at 0x%08x had totlen 0x%x instead of expected 0x%zx\n",
-                               ref_offset(fn->raw),
-                               je32_to_cpu(ri.totlen), sizeof(ri));
+                        pr_warn("%s(): Node at 0x%08x had totlen 0x%x instead of expected 0x%zx\n",
+                                __func__, ref_offset(fn->raw),
+                                je32_to_cpu(ri.totlen), sizeof(ri));
                         return -EIO;
                 }
                 crc = crc32(0, &ri, sizeof(ri)-8);
                 if (crc != je32_to_cpu(ri.node_crc)) {
-                        printk(KERN_WARNING "jffs2_garbage_collect_hole: Node at 0x%08x had CRC 0x%08x which doesn't match calculated CRC 0x%08x\n",
-                               ref_offset(fn->raw),
-                               je32_to_cpu(ri.node_crc), crc);
+                        pr_warn("%s: Node at 0x%08x had CRC 0x%08x which doesn't match calculated CRC 0x%08x\n",
+                                __func__, ref_offset(fn->raw),
+                                je32_to_cpu(ri.node_crc), crc);
                         /* FIXME: We could possibly deal with this by writing new holes for each frag */
-                        printk(KERN_WARNING "Data in the range 0x%08x to 0x%08x of inode #%u will be lost\n",
-                               start, end, f->inocache->ino);
+                        pr_warn("Data in the range 0x%08x to 0x%08x of inode #%u will be lost\n",
+                                start, end, f->inocache->ino);
                         goto fill;
                 }
                 if (ri.compr != JFFS2_COMPR_ZERO) {
-                        printk(KERN_WARNING "jffs2_garbage_collect_hole: Node 0x%08x wasn't a hole node!\n", ref_offset(fn->raw));
-                        printk(KERN_WARNING "Data in the range 0x%08x to 0x%08x of inode #%u will be lost\n",
-                               start, end, f->inocache->ino);
+                        pr_warn("%s(): Node 0x%08x wasn't a hole node!\n",
+                                __func__, ref_offset(fn->raw));
+                        pr_warn("Data in the range 0x%08x to 0x%08x of inode #%u will be lost\n",
+                                start, end, f->inocache->ino);
                         goto fill;
                 }
         } else {
@@ -1043,14 +1081,14 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
         ret = jffs2_reserve_space_gc(c, sizeof(ri), &alloclen,
                                      JFFS2_SUMMARY_INODE_SIZE);
         if (ret) {
-                printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_hole failed: %d\n",
-                       sizeof(ri), ret);
+                pr_warn("jffs2_reserve_space_gc of %zd bytes for garbage_collect_hole failed: %d\n",
+                        sizeof(ri), ret);
                 return ret;
         }
         new_fn = jffs2_write_dnode(c, f, &ri, NULL, 0, ALLOC_GC);
 
         if (IS_ERR(new_fn)) {
-                printk(KERN_WARNING "Error writing new hole node: %ld\n", PTR_ERR(new_fn));
+                pr_warn("Error writing new hole node: %ld\n", PTR_ERR(new_fn));
                 return PTR_ERR(new_fn);
         }
         if (je32_to_cpu(ri.version) == f->highest_version) {
@@ -1070,9 +1108,9 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
          * above.)
          */
         D1(if(unlikely(fn->frags <= 1)) {
-                printk(KERN_WARNING "jffs2_garbage_collect_hole: Replacing fn with %d frag(s) but new ver %d != highest_version %d of ino #%d\n",
-                       fn->frags, je32_to_cpu(ri.version), f->highest_version,
-                       je32_to_cpu(ri.ino));
+                        pr_warn("%s(): Replacing fn with %d frag(s) but new ver %d != highest_version %d of ino #%d\n",
+                                __func__, fn->frags, je32_to_cpu(ri.version),
+                                f->highest_version, je32_to_cpu(ri.ino));
         });
 
         /* This is a partially-overlapped hole node. Mark it REF_NORMAL not REF_PRISTINE */
@@ -1089,11 +1127,11 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
                 }
         }
         if (fn->frags) {
-                printk(KERN_WARNING "jffs2_garbage_collect_hole: Old node still has frags!\n");
+                pr_warn("%s(): Old node still has frags!\n", __func__);
                 BUG();
         }
         if (!new_fn->frags) {
-                printk(KERN_WARNING "jffs2_garbage_collect_hole: New node has no frags!\n");
+                pr_warn("%s(): New node has no frags!\n", __func__);
                 BUG();
         }
 
@@ -1117,8 +1155,8 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
 
         memset(&ri, 0, sizeof(ri));
 
-        D1(printk(KERN_DEBUG "Writing replacement dnode for ino #%u from offset 0x%x to 0x%x\n",
-                  f->inocache->ino, start, end));
+        jffs2_dbg(1, "Writing replacement dnode for ino #%u from offset 0x%x to 0x%x\n",
+                  f->inocache->ino, start, end);
 
         orig_end = end;
         orig_start = start;
@@ -1149,15 +1187,15 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                         /* If the previous frag doesn't even reach the beginning, there's
                            excessive fragmentation. Just merge. */
                         if (frag->ofs > min) {
-                                D1(printk(KERN_DEBUG "Expanding down to cover partial frag (0x%x-0x%x)\n",
-                                          frag->ofs, frag->ofs+frag->size));
+                                jffs2_dbg(1, "Expanding down to cover partial frag (0x%x-0x%x)\n",
+                                          frag->ofs, frag->ofs+frag->size);
                                 start = frag->ofs;
                                 continue;
                         }
                         /* OK. This frag holds the first byte of the page. */
                         if (!frag->node || !frag->node->raw) {
-                                D1(printk(KERN_DEBUG "First frag in page is hole (0x%x-0x%x). Not expanding down.\n",
-                                          frag->ofs, frag->ofs+frag->size));
+                                jffs2_dbg(1, "First frag in page is hole (0x%x-0x%x). Not expanding down.\n",
+                                          frag->ofs, frag->ofs+frag->size);
                                 break;
                         } else {
 
@@ -1171,19 +1209,25 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                                 jeb = &c->blocks[raw->flash_offset / c->sector_size];
 
                                 if (jeb == c->gcblock) {
-                                        D1(printk(KERN_DEBUG "Expanding down to cover frag (0x%x-0x%x) in gcblock at %08x\n",
-                                                  frag->ofs, frag->ofs+frag->size, ref_offset(raw)));
+                                        jffs2_dbg(1, "Expanding down to cover frag (0x%x-0x%x) in gcblock at %08x\n",
+                                                  frag->ofs,
+                                                  frag->ofs + frag->size,
+                                                  ref_offset(raw));
                                         start = frag->ofs;
                                         break;
                                 }
                                 if (!ISDIRTY(jeb->dirty_size + jeb->wasted_size)) {
-                                        D1(printk(KERN_DEBUG "Not expanding down to cover frag (0x%x-0x%x) in clean block %08x\n",
-                                                  frag->ofs, frag->ofs+frag->size, jeb->offset));
+                                        jffs2_dbg(1, "Not expanding down to cover frag (0x%x-0x%x) in clean block %08x\n",
+                                                  frag->ofs,
+                                                  frag->ofs + frag->size,
+                                                  jeb->offset);
                                         break;
                                 }
 
-                                D1(printk(KERN_DEBUG "Expanding down to cover frag (0x%x-0x%x) in dirty block %08x\n",
-                                                  frag->ofs, frag->ofs+frag->size, jeb->offset));
+                                jffs2_dbg(1, "Expanding down to cover frag (0x%x-0x%x) in dirty block %08x\n",
+                                          frag->ofs,
+                                          frag->ofs + frag->size,
+                                          jeb->offset);
                                 start = frag->ofs;
                                 break;
                         }
@@ -1199,15 +1243,15 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                         /* If the previous frag doesn't even reach the beginning, there's lots
                            of fragmentation. Just merge. */
                         if (frag->ofs+frag->size < max) {
-                                D1(printk(KERN_DEBUG "Expanding up to cover partial frag (0x%x-0x%x)\n",
-                                          frag->ofs, frag->ofs+frag->size));
+                                jffs2_dbg(1, "Expanding up to cover partial frag (0x%x-0x%x)\n",
+                                          frag->ofs, frag->ofs+frag->size);
                                 end = frag->ofs + frag->size;
                                 continue;
                         }
 
                         if (!frag->node || !frag->node->raw) {
-                                D1(printk(KERN_DEBUG "Last frag in page is hole (0x%x-0x%x). Not expanding up.\n",
-                                          frag->ofs, frag->ofs+frag->size));
+                                jffs2_dbg(1, "Last frag in page is hole (0x%x-0x%x). Not expanding up.\n",
+                                          frag->ofs, frag->ofs+frag->size);
                                 break;
                         } else {
 
@@ -1221,25 +1265,31 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                                 jeb = &c->blocks[raw->flash_offset / c->sector_size];
 
                                 if (jeb == c->gcblock) {
-                                        D1(printk(KERN_DEBUG "Expanding up to cover frag (0x%x-0x%x) in gcblock at %08x\n",
-                                                  frag->ofs, frag->ofs+frag->size, ref_offset(raw)));
+                                        jffs2_dbg(1, "Expanding up to cover frag (0x%x-0x%x) in gcblock at %08x\n",
+                                                  frag->ofs,
+                                                  frag->ofs + frag->size,
+                                                  ref_offset(raw));
                                         end = frag->ofs + frag->size;
                                         break;
                                 }
                                 if (!ISDIRTY(jeb->dirty_size + jeb->wasted_size)) {
-                                        D1(printk(KERN_DEBUG "Not expanding up to cover frag (0x%x-0x%x) in clean block %08x\n",
-                                                  frag->ofs, frag->ofs+frag->size, jeb->offset));
+                                        jffs2_dbg(1, "Not expanding up to cover frag (0x%x-0x%x) in clean block %08x\n",
+                                                  frag->ofs,
+                                                  frag->ofs + frag->size,
+                                                  jeb->offset);
                                         break;
                                 }
 
-                                D1(printk(KERN_DEBUG "Expanding up to cover frag (0x%x-0x%x) in dirty block %08x\n",
-                                                  frag->ofs, frag->ofs+frag->size, jeb->offset));
+                                jffs2_dbg(1, "Expanding up to cover frag (0x%x-0x%x) in dirty block %08x\n",
+                                          frag->ofs,
+                                          frag->ofs + frag->size,
+                                          jeb->offset);
                                 end = frag->ofs + frag->size;
                                 break;
                         }
                 }
-                D1(printk(KERN_DEBUG "Expanded dnode to write from (0x%x-0x%x) to (0x%x-0x%x)\n",
-                          orig_start, orig_end, start, end));
+                jffs2_dbg(1, "Expanded dnode to write from (0x%x-0x%x) to (0x%x-0x%x)\n",
+                          orig_start, orig_end, start, end);
 
                 D1(BUG_ON(end > frag_last(&f->fragtree)->ofs + frag_last(&f->fragtree)->size));
                 BUG_ON(end < orig_end);
@@ -1256,7 +1306,8 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
         pg_ptr = jffs2_gc_fetch_page(c, f, start, &pg);
 
         if (IS_ERR(pg_ptr)) {
-                printk(KERN_WARNING "read_cache_page() returned error: %ld\n", PTR_ERR(pg_ptr));
+                pr_warn("read_cache_page() returned error: %ld\n",
+                        PTR_ERR(pg_ptr));
                 return PTR_ERR(pg_ptr);
         }
 
@@ -1270,8 +1321,8 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                                         &alloclen, JFFS2_SUMMARY_INODE_SIZE);
 
                 if (ret) {
-                        printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_dnode failed: %d\n",
-                               sizeof(ri)+ JFFS2_MIN_DATA_LEN, ret);
+                        pr_warn("jffs2_reserve_space_gc of %zd bytes for garbage_collect_dnode failed: %d\n",
+                                sizeof(ri) + JFFS2_MIN_DATA_LEN, ret);
                         break;
                 }
                 cdatalen = min_t(uint32_t, alloclen - sizeof(ri), end - offset);
@@ -1308,7 +1359,8 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                 jffs2_free_comprbuf(comprbuf, writebuf);
 
                 if (IS_ERR(new_fn)) {
-                        printk(KERN_WARNING "Error writing new dnode: %ld\n", PTR_ERR(new_fn));
+                        pr_warn("Error writing new dnode: %ld\n",
+                                PTR_ERR(new_fn));
                         ret = PTR_ERR(new_fn);
                         break;
                 }
diff --git a/fs/jffs2/malloc.c b/fs/jffs2/malloc.c
index c082868910f2..4f47aa24b556 100644
--- a/fs/jffs2/malloc.c
+++ b/fs/jffs2/malloc.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/init.h>
diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c
index 5e03233c2363..975a1f562c10 100644
--- a/fs/jffs2/nodelist.c
+++ b/fs/jffs2/nodelist.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/fs.h>
@@ -687,8 +689,8 @@ int jffs2_scan_dirty_space(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb
         if (!size)
                 return 0;
         if (unlikely(size > jeb->free_size)) {
-                printk(KERN_CRIT "Dirty space 0x%x larger then free_size 0x%x (wasted 0x%x)\n",
-                       size, jeb->free_size, jeb->wasted_size);
+                pr_crit("Dirty space 0x%x larger then free_size 0x%x (wasted 0x%x)\n",
+                        size, jeb->free_size, jeb->wasted_size);
                 BUG();
         }
         /* REF_EMPTY_NODE is !obsolete, so that works OK */
@@ -726,8 +728,10 @@ static inline uint32_t __ref_totlen(struct jffs2_sb_info *c,
 
                 /* Last node in block. Use free_space */
                 if (unlikely(ref != jeb->last_node)) {
-                        printk(KERN_CRIT "ref %p @0x%08x is not jeb->last_node (%p @0x%08x)\n",
-                               ref, ref_offset(ref), jeb->last_node, jeb->last_node?ref_offset(jeb->last_node):0);
+                        pr_crit("ref %p @0x%08x is not jeb->last_node (%p @0x%08x)\n",
+                                ref, ref_offset(ref), jeb->last_node,
+                                jeb->last_node ?
+                                ref_offset(jeb->last_node) : 0);
                         BUG();
                 }
                 ref_end = jeb->offset + c->sector_size - jeb->free_size;
@@ -747,16 +751,20 @@ uint32_t __jffs2_ref_totlen(struct jffs2_sb_info *c, struct jffs2_eraseblock *je
                 if (!jeb)
                         jeb = &c->blocks[ref->flash_offset / c->sector_size];
 
-                printk(KERN_CRIT "Totlen for ref at %p (0x%08x-0x%08x) miscalculated as 0x%x instead of %x\n",
-                       ref, ref_offset(ref), ref_offset(ref)+ref->__totlen,
-                       ret, ref->__totlen);
+                pr_crit("Totlen for ref at %p (0x%08x-0x%08x) miscalculated as 0x%x instead of %x\n",
+                        ref, ref_offset(ref), ref_offset(ref) + ref->__totlen,
+                        ret, ref->__totlen);
                 if (ref_next(ref)) {
-                        printk(KERN_CRIT "next %p (0x%08x-0x%08x)\n", ref_next(ref), ref_offset(ref_next(ref)),
-                               ref_offset(ref_next(ref))+ref->__totlen);
+                        pr_crit("next %p (0x%08x-0x%08x)\n",
+                                ref_next(ref), ref_offset(ref_next(ref)),
+                                ref_offset(ref_next(ref)) + ref->__totlen);
                 } else 
-                        printk(KERN_CRIT "No next ref. jeb->last_node is %p\n", jeb->last_node);
+                        pr_crit("No next ref. jeb->last_node is %p\n",
+                                jeb->last_node);
 
-                printk(KERN_CRIT "jeb->wasted_size %x, dirty_size %x, used_size %x, free_size %x\n", jeb->wasted_size, jeb->dirty_size, jeb->used_size, jeb->free_size);
+                pr_crit("jeb->wasted_size %x, dirty_size %x, used_size %x, free_size %x\n",
+                        jeb->wasted_size, jeb->dirty_size, jeb->used_size,
+                        jeb->free_size);
 
 #if defined(JFFS2_DBG_DUMPS) || defined(JFFS2_DBG_PARANOIA_CHECKS)
                 __jffs2_dbg_dump_node_refs_nolock(c, jeb);
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 694aa5b03505..6784d1e7a7eb 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/mtd/mtd.h>
 #include <linux/compiler.h>
@@ -46,10 +48,10 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
         /* align it */
         minsize = PAD(minsize);
 
-        D1(printk(KERN_DEBUG "jffs2_reserve_space(): Requested 0x%x bytes\n", minsize));
+        jffs2_dbg(1, "%s(): Requested 0x%x bytes\n", __func__, minsize);
         mutex_lock(&c->alloc_sem);
 
-        D1(printk(KERN_DEBUG "jffs2_reserve_space(): alloc sem got\n"));
+        jffs2_dbg(1, "%s(): alloc sem got\n", __func__);
 
         spin_lock(&c->erase_completion_lock);
 
@@ -73,11 +75,13 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
                         dirty = c->dirty_size + c->erasing_size - c->nr_erasing_blocks * c->sector_size + c->unchecked_size;
                         if (dirty < c->nospc_dirty_size) {
                                 if (prio == ALLOC_DELETION && c->nr_free_blocks + c->nr_erasing_blocks >= c->resv_blocks_deletion) {
-                                        D1(printk(KERN_NOTICE "jffs2_reserve_space(): Low on dirty space to GC, but it's a deletion. Allowing...\n"));
+                                        jffs2_dbg(1, "%s(): Low on dirty space to GC, but it's a deletion. Allowing...\n",
+                                                  __func__);
                                         break;
                                 }
-                                D1(printk(KERN_DEBUG "dirty size 0x%08x + unchecked_size 0x%08x < nospc_dirty_size 0x%08x, returning -ENOSPC\n",
-                                          dirty, c->unchecked_size, c->sector_size));
+                                jffs2_dbg(1, "dirty size 0x%08x + unchecked_size 0x%08x < nospc_dirty_size 0x%08x, returning -ENOSPC\n",
+                                          dirty, c->unchecked_size,
+                                          c->sector_size);
 
                                 spin_unlock(&c->erase_completion_lock);
                                 mutex_unlock(&c->alloc_sem);
@@ -96,12 +100,13 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
                         avail = c->free_size + c->dirty_size + c->erasing_size + c->unchecked_size;
                         if ( (avail / c->sector_size) <= blocksneeded) {
                                 if (prio == ALLOC_DELETION && c->nr_free_blocks + c->nr_erasing_blocks >= c->resv_blocks_deletion) {
-                                        D1(printk(KERN_NOTICE "jffs2_reserve_space(): Low on possibly available space, but it's a deletion. Allowing...\n"));
+                                        jffs2_dbg(1, "%s(): Low on possibly available space, but it's a deletion. Allowing...\n",
+                                                  __func__);
                                         break;
                                 }
 
-                                D1(printk(KERN_DEBUG "max. available size 0x%08x  < blocksneeded * sector_size 0x%08x, returning -ENOSPC\n",
-                                          avail, blocksneeded * c->sector_size));
+                                jffs2_dbg(1, "max. available size 0x%08x  < blocksneeded * sector_size 0x%08x, returning -ENOSPC\n",
+                                          avail, blocksneeded * c->sector_size);
                                 spin_unlock(&c->erase_completion_lock);
                                 mutex_unlock(&c->alloc_sem);
                                 return -ENOSPC;
@@ -109,9 +114,14 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
 
                         mutex_unlock(&c->alloc_sem);
 
-                        D1(printk(KERN_DEBUG "Triggering GC pass. nr_free_blocks %d, nr_erasing_blocks %d, free_size 0x%08x, dirty_size 0x%08x, wasted_size 0x%08x, used_size 0x%08x, erasing_size 0x%08x, bad_size 0x%08x (total 0x%08x of 0x%08x)\n",
-                                  c->nr_free_blocks, c->nr_erasing_blocks, c->free_size, c->dirty_size, c->wasted_size, c->used_size, c->erasing_size, c->bad_size,
-                                  c->free_size + c->dirty_size + c->wasted_size + c->used_size + c->erasing_size + c->bad_size, c->flash_size));
+                        jffs2_dbg(1, "Triggering GC pass. nr_free_blocks %d, nr_erasing_blocks %d, free_size 0x%08x, dirty_size 0x%08x, wasted_size 0x%08x, used_size 0x%08x, erasing_size 0x%08x, bad_size 0x%08x (total 0x%08x of 0x%08x)\n",
+                                  c->nr_free_blocks, c->nr_erasing_blocks,
+                                  c->free_size, c->dirty_size, c->wasted_size,
+                                  c->used_size, c->erasing_size, c->bad_size,
+                                  c->free_size + c->dirty_size +
+                                  c->wasted_size + c->used_size +
+                                  c->erasing_size + c->bad_size,
+                                  c->flash_size);
                         spin_unlock(&c->erase_completion_lock);
 
                         ret = jffs2_garbage_collect_pass(c);
@@ -124,7 +134,8 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
                                         DECLARE_WAITQUEUE(wait, current);
                                         set_current_state(TASK_UNINTERRUPTIBLE);
                                         add_wait_queue(&c->erase_wait, &wait);
-                                        D1(printk(KERN_DEBUG "%s waiting for erase to complete\n", __func__));
+                                        jffs2_dbg(1, "%s waiting for erase to complete\n",
+                                                  __func__);
                                         spin_unlock(&c->erase_completion_lock);
 
                                         schedule();
@@ -144,7 +155,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
 
                 ret = jffs2_do_reserve_space(c, minsize, len, sumsize);
                 if (ret) {
-                        D1(printk(KERN_DEBUG "jffs2_reserve_space: ret is %d\n", ret));
+                        jffs2_dbg(1, "%s(): ret is %d\n", __func__, ret);
                 }
         }
         spin_unlock(&c->erase_completion_lock);
@@ -161,13 +172,14 @@ int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize,
         int ret = -EAGAIN;
         minsize = PAD(minsize);
 
-        D1(printk(KERN_DEBUG "jffs2_reserve_space_gc(): Requested 0x%x bytes\n", minsize));
+        jffs2_dbg(1, "%s(): Requested 0x%x bytes\n", __func__, minsize);
 
         spin_lock(&c->erase_completion_lock);
         while(ret == -EAGAIN) {
                 ret = jffs2_do_reserve_space(c, minsize, len, sumsize);
                 if (ret) {
-                        D1(printk(KERN_DEBUG "jffs2_reserve_space_gc: looping, ret is %d\n", ret));
+                        jffs2_dbg(1, "%s(): looping, ret is %d\n",
+                                  __func__, ret);
                 }
         }
         spin_unlock(&c->erase_completion_lock);
@@ -184,8 +196,8 @@ static void jffs2_close_nextblock(struct jffs2_sb_info *c, struct jffs2_eraseblo
 {
 
         if (c->nextblock == NULL) {
-                D1(printk(KERN_DEBUG "jffs2_close_nextblock: Erase block at 0x%08x has already been placed in a list\n",
-                  jeb->offset));
+                jffs2_dbg(1, "%s(): Erase block at 0x%08x has already been placed in a list\n",
+                          __func__, jeb->offset);
                 return;
         }
         /* Check, if we have a dirty block now, or if it was dirty already */
@@ -195,17 +207,20 @@ static void jffs2_close_nextblock(struct jffs2_sb_info *c, struct jffs2_eraseblo
                 jeb->dirty_size += jeb->wasted_size;
                 jeb->wasted_size = 0;
                 if (VERYDIRTY(c, jeb->dirty_size)) {
-                        D1(printk(KERN_DEBUG "Adding full erase block at 0x%08x to very_dirty_list (free 0x%08x, dirty 0x%08x, used 0x%08x\n",
-                          jeb->offset, jeb->free_size, jeb->dirty_size, jeb->used_size));
+                        jffs2_dbg(1, "Adding full erase block at 0x%08x to very_dirty_list (free 0x%08x, dirty 0x%08x, used 0x%08x\n",
+                                  jeb->offset, jeb->free_size, jeb->dirty_size,
+                                  jeb->used_size);
                         list_add_tail(&jeb->list, &c->very_dirty_list);
                 } else {
-                        D1(printk(KERN_DEBUG "Adding full erase block at 0x%08x to dirty_list (free 0x%08x, dirty 0x%08x, used 0x%08x\n",
-                          jeb->offset, jeb->free_size, jeb->dirty_size, jeb->used_size));
+                        jffs2_dbg(1, "Adding full erase block at 0x%08x to dirty_list (free 0x%08x, dirty 0x%08x, used 0x%08x\n",
+                                  jeb->offset, jeb->free_size, jeb->dirty_size,
+                                  jeb->used_size);
                         list_add_tail(&jeb->list, &c->dirty_list);
                 }
         } else {
-                D1(printk(KERN_DEBUG "Adding full erase block at 0x%08x to clean_list (free 0x%08x, dirty 0x%08x, used 0x%08x\n",
-                  jeb->offset, jeb->free_size, jeb->dirty_size, jeb->used_size));
+                jffs2_dbg(1, "Adding full erase block at 0x%08x to clean_list (free 0x%08x, dirty 0x%08x, used 0x%08x\n",
+                          jeb->offset, jeb->free_size, jeb->dirty_size,
+                          jeb->used_size);
                 list_add_tail(&jeb->list, &c->clean_list);
         }
         c->nextblock = NULL;
@@ -230,13 +245,14 @@ static int jffs2_find_nextblock(struct jffs2_sb_info *c)
                         list_move_tail(&ejeb->list, &c->erase_pending_list);
                         c->nr_erasing_blocks++;
                         jffs2_garbage_collect_trigger(c);
-                        D1(printk(KERN_DEBUG "jffs2_find_nextblock: Triggering erase of erasable block at 0x%08x\n",
-                                  ejeb->offset));
+                        jffs2_dbg(1, "%s(): Triggering erase of erasable block at 0x%08x\n",
+                                  __func__, ejeb->offset);
                 }
 
                 if (!c->nr_erasing_blocks &&
                         !list_empty(&c->erasable_pending_wbuf_list)) {
-                        D1(printk(KERN_DEBUG "jffs2_find_nextblock: Flushing write buffer\n"));
+                        jffs2_dbg(1, "%s(): Flushing write buffer\n",
+                                  __func__);
                         /* c->nextblock is NULL, no update to c->nextblock allowed */
                         spin_unlock(&c->erase_completion_lock);
                         jffs2_flush_wbuf_pad(c);
@@ -248,9 +264,11 @@ static int jffs2_find_nextblock(struct jffs2_sb_info *c)
                 if (!c->nr_erasing_blocks) {
                         /* Ouch. We're in GC, or we wouldn't have got here.
                            And there's no space left. At all. */
-                        printk(KERN_CRIT "Argh. No free space left for GC. nr_erasing_blocks is %d. nr_free_blocks is %d. (erasableempty: %s, erasingempty: %s, erasependingempty: %s)\n",
-                                   c->nr_erasing_blocks, c->nr_free_blocks, list_empty(&c->erasable_list)?"yes":"no",
-                                   list_empty(&c->erasing_list)?"yes":"no", list_empty(&c->erase_pending_list)?"yes":"no");
+                        pr_crit("Argh. No free space left for GC. nr_erasing_blocks is %d. nr_free_blocks is %d. (erasableempty: %s, erasingempty: %s, erasependingempty: %s)\n",
+                                c->nr_erasing_blocks, c->nr_free_blocks,
+                                list_empty(&c->erasable_list) ? "yes" : "no",
+                                list_empty(&c->erasing_list) ? "yes" : "no",
+                                list_empty(&c->erase_pending_list) ? "yes" : "no");
                         return -ENOSPC;
                 }
 
@@ -278,7 +296,8 @@ static int jffs2_find_nextblock(struct jffs2_sb_info *c)
                 c->wbuf_ofs = 0xffffffff;
 #endif
 
-        D1(printk(KERN_DEBUG "jffs2_find_nextblock(): new nextblock = 0x%08x\n", c->nextblock->offset));
+        jffs2_dbg(1, "%s(): new nextblock = 0x%08x\n",
+                  __func__, c->nextblock->offset);
 
         return 0;
 }
@@ -345,7 +364,8 @@ static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
 
                         if (jffs2_wbuf_dirty(c)) {
                                 spin_unlock(&c->erase_completion_lock);
-                                D1(printk(KERN_DEBUG "jffs2_do_reserve_space: Flushing write buffer\n"));
+                                jffs2_dbg(1, "%s(): Flushing write buffer\n",
+                                          __func__);
                                 jffs2_flush_wbuf_pad(c);
                                 spin_lock(&c->erase_completion_lock);
                                 jeb = c->nextblock;
@@ -387,7 +407,8 @@ static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
                 jeb = c->nextblock;
 
                 if (jeb->free_size != c->sector_size - c->cleanmarker_size) {
-                        printk(KERN_WARNING "Eep. Block 0x%08x taken from free_list had free_size of 0x%08x!!\n", jeb->offset, jeb->free_size);
+                        pr_warn("Eep. Block 0x%08x taken from free_list had free_size of 0x%08x!!\n",
+                                jeb->offset, jeb->free_size);
                         goto restart;
                 }
         }
@@ -408,8 +429,9 @@ static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
                 spin_lock(&c->erase_completion_lock);
         }
 
-        D1(printk(KERN_DEBUG "jffs2_do_reserve_space(): Giving 0x%x bytes at 0x%x\n",
-                  *len, jeb->offset + (c->sector_size - jeb->free_size)));
+        jffs2_dbg(1, "%s(): Giving 0x%x bytes at 0x%x\n",
+                  __func__,
+                  *len, jeb->offset + (c->sector_size - jeb->free_size));
         return 0;
 }
 
@@ -434,20 +456,22 @@ struct jffs2_raw_node_ref *jffs2_add_physical_node_ref(struct jffs2_sb_info *c,
 
         jeb = &c->blocks[ofs / c->sector_size];
 
-        D1(printk(KERN_DEBUG "jffs2_add_physical_node_ref(): Node at 0x%x(%d), size 0x%x\n",
-                  ofs & ~3, ofs & 3, len));
+        jffs2_dbg(1, "%s(): Node at 0x%x(%d), size 0x%x\n",
+                  __func__, ofs & ~3, ofs & 3, len);
 #if 1
         /* Allow non-obsolete nodes only to be added at the end of c->nextblock, 
            if c->nextblock is set. Note that wbuf.c will file obsolete nodes
            even after refiling c->nextblock */
         if ((c->nextblock || ((ofs & 3) != REF_OBSOLETE))
             && (jeb != c->nextblock || (ofs & ~3) != jeb->offset + (c->sector_size - jeb->free_size))) {
-                printk(KERN_WARNING "argh. node added in wrong place at 0x%08x(%d)\n", ofs & ~3, ofs & 3);
+                pr_warn("argh. node added in wrong place at 0x%08x(%d)\n",
+                        ofs & ~3, ofs & 3);
                 if (c->nextblock)
-                        printk(KERN_WARNING "nextblock 0x%08x", c->nextblock->offset);
+                        pr_warn("nextblock 0x%08x", c->nextblock->offset);
                 else
-                        printk(KERN_WARNING "No nextblock");
-                printk(", expected at %08x\n", jeb->offset + (c->sector_size - jeb->free_size));
+                        pr_warn("No nextblock");
+                pr_cont(", expected at %08x\n",
+                        jeb->offset + (c->sector_size - jeb->free_size));
                 return ERR_PTR(-EINVAL);
         }
 #endif
@@ -457,8 +481,9 @@ struct jffs2_raw_node_ref *jffs2_add_physical_node_ref(struct jffs2_sb_info *c,
 
         if (!jeb->free_size && !jeb->dirty_size && !ISDIRTY(jeb->wasted_size)) {
                 /* If it lives on the dirty_list, jffs2_reserve_space will put it there */
-                D1(printk(KERN_DEBUG "Adding full erase block at 0x%08x to clean_list (free 0x%08x, dirty 0x%08x, used 0x%08x\n",
-                          jeb->offset, jeb->free_size, jeb->dirty_size, jeb->used_size));
+                jffs2_dbg(1, "Adding full erase block at 0x%08x to clean_list (free 0x%08x, dirty 0x%08x, used 0x%08x\n",
+                          jeb->offset, jeb->free_size, jeb->dirty_size,
+                          jeb->used_size);
                 if (jffs2_wbuf_dirty(c)) {
                         /* Flush the last write in the block if it's outstanding */
                         spin_unlock(&c->erase_completion_lock);
@@ -480,7 +505,7 @@ struct jffs2_raw_node_ref *jffs2_add_physical_node_ref(struct jffs2_sb_info *c,
 
 void jffs2_complete_reservation(struct jffs2_sb_info *c)
 {
-        D1(printk(KERN_DEBUG "jffs2_complete_reservation()\n"));
+        jffs2_dbg(1, "jffs2_complete_reservation()\n");
         spin_lock(&c->erase_completion_lock);
         jffs2_garbage_collect_trigger(c);
         spin_unlock(&c->erase_completion_lock);
@@ -493,7 +518,7 @@ static inline int on_list(struct list_head *obj, struct list_head *head)
 
         list_for_each(this, head) {
                 if (this == obj) {
-                        D1(printk("%p is on list at %p\n", obj, head));
+                        jffs2_dbg(1, "%p is on list at %p\n", obj, head);
                         return 1;
 
                 }
@@ -511,16 +536,18 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
         uint32_t freed_len;
 
         if(unlikely(!ref)) {
-                printk(KERN_NOTICE "EEEEEK. jffs2_mark_node_obsolete called with NULL node\n");
+                pr_notice("EEEEEK. jffs2_mark_node_obsolete called with NULL node\n");
                 return;
         }
         if (ref_obsolete(ref)) {
-                D1(printk(KERN_DEBUG "jffs2_mark_node_obsolete called with already obsolete node at 0x%08x\n", ref_offset(ref)));
+                jffs2_dbg(1, "%s(): called with already obsolete node at 0x%08x\n",
+                          __func__, ref_offset(ref));
                 return;
         }
         blocknr = ref->flash_offset / c->sector_size;
         if (blocknr >= c->nr_blocks) {
-                printk(KERN_NOTICE "raw node at 0x%08x is off the end of device!\n", ref->flash_offset);
+                pr_notice("raw node at 0x%08x is off the end of device!\n",
+                          ref->flash_offset);
                 BUG();
         }
         jeb = &c->blocks[blocknr];
@@ -542,27 +569,31 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 
         if (ref_flags(ref) == REF_UNCHECKED) {
                 D1(if (unlikely(jeb->unchecked_size < freed_len)) {
-                        printk(KERN_NOTICE "raw unchecked node of size 0x%08x freed from erase block %d at 0x%08x, but unchecked_size was already 0x%08x\n",
-                               freed_len, blocknr, ref->flash_offset, jeb->used_size);
+                                pr_notice("raw unchecked node of size 0x%08x freed from erase block %d at 0x%08x, but unchecked_size was already 0x%08x\n",
+                                          freed_len, blocknr,
+                                          ref->flash_offset, jeb->used_size);
                         BUG();
                 })
-                D1(printk(KERN_DEBUG "Obsoleting previously unchecked node at 0x%08x of len %x: ", ref_offset(ref), freed_len));
+                        jffs2_dbg(1, "Obsoleting previously unchecked node at 0x%08x of len %x\n",
+                                  ref_offset(ref), freed_len);
                 jeb->unchecked_size -= freed_len;
                 c->unchecked_size -= freed_len;
         } else {
                 D1(if (unlikely(jeb->used_size < freed_len)) {
-                        printk(KERN_NOTICE "raw node of size 0x%08x freed from erase block %d at 0x%08x, but used_size was already 0x%08x\n",
-                               freed_len, blocknr, ref->flash_offset, jeb->used_size);
+                                pr_notice("raw node of size 0x%08x freed from erase block %d at 0x%08x, but used_size was already 0x%08x\n",
+                                          freed_len, blocknr,
+                                          ref->flash_offset, jeb->used_size);
                         BUG();
                 })
-                D1(printk(KERN_DEBUG "Obsoleting node at 0x%08x of len %#x: ", ref_offset(ref), freed_len));
+                        jffs2_dbg(1, "Obsoleting node at 0x%08x of len %#x: ",
+                                  ref_offset(ref), freed_len);
                 jeb->used_size -= freed_len;
                 c->used_size -= freed_len;
         }
 
         // Take care, that wasted size is taken into concern
         if ((jeb->dirty_size || ISDIRTY(jeb->wasted_size + freed_len)) && jeb != c->nextblock) {
-                D1(printk("Dirtying\n"));
+                jffs2_dbg(1, "Dirtying\n");
                 addedsize = freed_len;
                 jeb->dirty_size += freed_len;
                 c->dirty_size += freed_len;
@@ -570,12 +601,12 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
                 /* Convert wasted space to dirty, if not a bad block */
                 if (jeb->wasted_size) {
                         if (on_list(&jeb->list, &c->bad_used_list)) {
-                                D1(printk(KERN_DEBUG "Leaving block at %08x on the bad_used_list\n",
-                                          jeb->offset));
+                                jffs2_dbg(1, "Leaving block at %08x on the bad_used_list\n",
+                                          jeb->offset);
                                 addedsize = 0; /* To fool the refiling code later */
                         } else {
-                                D1(printk(KERN_DEBUG "Converting %d bytes of wasted space to dirty in block at %08x\n",
-                                          jeb->wasted_size, jeb->offset));
+                                jffs2_dbg(1, "Converting %d bytes of wasted space to dirty in block at %08x\n",
+                                          jeb->wasted_size, jeb->offset);
                                 addedsize += jeb->wasted_size;
                                 jeb->dirty_size += jeb->wasted_size;
                                 c->dirty_size += jeb->wasted_size;
@@ -584,7 +615,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
                         }
                 }
         } else {
-                D1(printk("Wasting\n"));
+                jffs2_dbg(1, "Wasting\n");
                 addedsize = 0;
                 jeb->wasted_size += freed_len;
                 c->wasted_size += freed_len;
@@ -606,50 +637,57 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
         }
 
         if (jeb == c->nextblock) {
-                D2(printk(KERN_DEBUG "Not moving nextblock 0x%08x to dirty/erase_pending list\n", jeb->offset));
+                jffs2_dbg(2, "Not moving nextblock 0x%08x to dirty/erase_pending list\n",
+                          jeb->offset);
         } else if (!jeb->used_size && !jeb->unchecked_size) {
                 if (jeb == c->gcblock) {
-                        D1(printk(KERN_DEBUG "gcblock at 0x%08x completely dirtied. Clearing gcblock...\n", jeb->offset));
+                        jffs2_dbg(1, "gcblock at 0x%08x completely dirtied. Clearing gcblock...\n",
+                                  jeb->offset);
                         c->gcblock = NULL;
                 } else {
-                        D1(printk(KERN_DEBUG "Eraseblock at 0x%08x completely dirtied. Removing from (dirty?) list...\n", jeb->offset));
+                        jffs2_dbg(1, "Eraseblock at 0x%08x completely dirtied. Removing from (dirty?) list...\n",
+                                  jeb->offset);
                         list_del(&jeb->list);
                 }
                 if (jffs2_wbuf_dirty(c)) {
-                        D1(printk(KERN_DEBUG "...and adding to erasable_pending_wbuf_list\n"));
+                        jffs2_dbg(1, "...and adding to erasable_pending_wbuf_list\n");
                         list_add_tail(&jeb->list, &c->erasable_pending_wbuf_list);
                 } else {
                         if (jiffies & 127) {
                                 /* Most of the time, we just erase it immediately. Otherwise we
                                    spend ages scanning it on mount, etc. */
-                                D1(printk(KERN_DEBUG "...and adding to erase_pending_list\n"));
+                                jffs2_dbg(1, "...and adding to erase_pending_list\n");
                                 list_add_tail(&jeb->list, &c->erase_pending_list);
                                 c->nr_erasing_blocks++;
                                 jffs2_garbage_collect_trigger(c);
                         } else {
                                 /* Sometimes, however, we leave it elsewhere so it doesn't get
                                    immediately reused, and we spread the load a bit. */
-                                D1(printk(KERN_DEBUG "...and adding to erasable_list\n"));
+                                jffs2_dbg(1, "...and adding to erasable_list\n");
                                 list_add_tail(&jeb->list, &c->erasable_list);
                         }
                 }
-                D1(printk(KERN_DEBUG "Done OK\n"));
+                jffs2_dbg(1, "Done OK\n");
         } else if (jeb == c->gcblock) {
-                D2(printk(KERN_DEBUG "Not moving gcblock 0x%08x to dirty_list\n", jeb->offset));
+                jffs2_dbg(2, "Not moving gcblock 0x%08x to dirty_list\n",
+                          jeb->offset);
         } else if (ISDIRTY(jeb->dirty_size) && !ISDIRTY(jeb->dirty_size - addedsize)) {
-                D1(printk(KERN_DEBUG "Eraseblock at 0x%08x is freshly dirtied. Removing from clean list...\n", jeb->offset));
+                jffs2_dbg(1, "Eraseblock at 0x%08x is freshly dirtied. Removing from clean list...\n",
+                          jeb->offset);
                 list_del(&jeb->list);
-                D1(printk(KERN_DEBUG "...and adding to dirty_list\n"));
+                jffs2_dbg(1, "...and adding to dirty_list\n");
                 list_add_tail(&jeb->list, &c->dirty_list);
         } else if (VERYDIRTY(c, jeb->dirty_size) &&
                    !VERYDIRTY(c, jeb->dirty_size - addedsize)) {
-                D1(printk(KERN_DEBUG "Eraseblock at 0x%08x is now very dirty. Removing from dirty list...\n", jeb->offset));
+                jffs2_dbg(1, "Eraseblock at 0x%08x is now very dirty. Removing from dirty list...\n",
+                          jeb->offset);
                 list_del(&jeb->list);
-                D1(printk(KERN_DEBUG "...and adding to very_dirty_list\n"));
+                jffs2_dbg(1, "...and adding to very_dirty_list\n");
                 list_add_tail(&jeb->list, &c->very_dirty_list);
         } else {
-                D1(printk(KERN_DEBUG "Eraseblock at 0x%08x not moved anywhere. (free 0x%08x, dirty 0x%08x, used 0x%08x)\n",
-                          jeb->offset, jeb->free_size, jeb->dirty_size, jeb->used_size));
+                jffs2_dbg(1, "Eraseblock at 0x%08x not moved anywhere. (free 0x%08x, dirty 0x%08x, used 0x%08x)\n",
+                          jeb->offset, jeb->free_size, jeb->dirty_size,
+                          jeb->used_size);
         }
 
         spin_unlock(&c->erase_completion_lock);
@@ -665,33 +703,40 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
            the block hasn't _already_ been erased, and that 'ref' itself hasn't been freed yet
            by jffs2_free_jeb_node_refs() in erase.c. Which is nice. */
 
-        D1(printk(KERN_DEBUG "obliterating obsoleted node at 0x%08x\n", ref_offset(ref)));
+        jffs2_dbg(1, "obliterating obsoleted node at 0x%08x\n",
+                  ref_offset(ref));
         ret = jffs2_flash_read(c, ref_offset(ref), sizeof(n), &retlen, (char *)&n);
         if (ret) {
-                printk(KERN_WARNING "Read error reading from obsoleted node at 0x%08x: %d\n", ref_offset(ref), ret);
+                pr_warn("Read error reading from obsoleted node at 0x%08x: %d\n",
+                        ref_offset(ref), ret);
                 goto out_erase_sem;
         }
         if (retlen != sizeof(n)) {
-                printk(KERN_WARNING "Short read from obsoleted node at 0x%08x: %zd\n", ref_offset(ref), retlen);
+                pr_warn("Short read from obsoleted node at 0x%08x: %zd\n",
+                        ref_offset(ref), retlen);
                 goto out_erase_sem;
         }
         if (PAD(je32_to_cpu(n.totlen)) != PAD(freed_len)) {
-                printk(KERN_WARNING "Node totlen on flash (0x%08x) != totlen from node ref (0x%08x)\n", je32_to_cpu(n.totlen), freed_len);
+                pr_warn("Node totlen on flash (0x%08x) != totlen from node ref (0x%08x)\n",
+                        je32_to_cpu(n.totlen), freed_len);
                 goto out_erase_sem;
         }
         if (!(je16_to_cpu(n.nodetype) & JFFS2_NODE_ACCURATE)) {
-                D1(printk(KERN_DEBUG "Node at 0x%08x was already marked obsolete (nodetype 0x%04x)\n", ref_offset(ref), je16_to_cpu(n.nodetype)));
+                jffs2_dbg(1, "Node at 0x%08x was already marked obsolete (nodetype 0x%04x)\n",
+                          ref_offset(ref), je16_to_cpu(n.nodetype));
                 goto out_erase_sem;
         }
         /* XXX FIXME: This is ugly now */
         n.nodetype = cpu_to_je16(je16_to_cpu(n.nodetype) & ~JFFS2_NODE_ACCURATE);
         ret = jffs2_flash_write(c, ref_offset(ref), sizeof(n), &retlen, (char *)&n);
         if (ret) {
-                printk(KERN_WARNING "Write error in obliterating obsoleted node at 0x%08x: %d\n", ref_offset(ref), ret);
+                pr_warn("Write error in obliterating obsoleted node at 0x%08x: %d\n",
+                        ref_offset(ref), ret);
                 goto out_erase_sem;
         }
         if (retlen != sizeof(n)) {
-                printk(KERN_WARNING "Short write in obliterating obsoleted node at 0x%08x: %zd\n", ref_offset(ref), retlen);
+                pr_warn("Short write in obliterating obsoleted node at 0x%08x: %zd\n",
+                        ref_offset(ref), retlen);
                 goto out_erase_sem;
         }
 
@@ -751,8 +796,8 @@ int jffs2_thread_should_wake(struct jffs2_sb_info *c)
                 return 1;
 
         if (c->unchecked_size) {
-                D1(printk(KERN_DEBUG "jffs2_thread_should_wake(): unchecked_size %d, checked_ino #%d\n",
-                          c->unchecked_size, c->checked_ino));
+                jffs2_dbg(1, "jffs2_thread_should_wake(): unchecked_size %d, checked_ino #%d\n",
+                          c->unchecked_size, c->checked_ino);
                 return 1;
         }
 
@@ -780,8 +825,9 @@ int jffs2_thread_should_wake(struct jffs2_sb_info *c)
                 }
         }
 
-        D1(printk(KERN_DEBUG "jffs2_thread_should_wake(): nr_free_blocks %d, nr_erasing_blocks %d, dirty_size 0x%x, vdirty_blocks %d: %s\n",
-                  c->nr_free_blocks, c->nr_erasing_blocks, c->dirty_size, nr_very_dirty, ret?"yes":"no"));
+        jffs2_dbg(1, "%s(): nr_free_blocks %d, nr_erasing_blocks %d, dirty_size 0x%x, vdirty_blocks %d: %s\n",
+                  __func__, c->nr_free_blocks, c->nr_erasing_blocks,
+                  c->dirty_size, nr_very_dirty, ret ? "yes" : "no");
 
         return ret;
 }
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index ab65ee3ec858..1cd3aec9d9ae 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -76,7 +76,7 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
 #define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)
 
 #define jffs2_flash_write(c, ofs, len, retlen, buf) jffs2_flash_direct_write(c, ofs, len, retlen, buf)
-#define jffs2_flash_read(c, ofs, len, retlen, buf) ((c)->mtd->read((c)->mtd, ofs, len, retlen, buf))
+#define jffs2_flash_read(c, ofs, len, retlen, buf) (mtd_read((c)->mtd, ofs, len, retlen, buf))
 #define jffs2_flush_wbuf_pad(c) ({ do{} while(0); (void)(c), 0; })
 #define jffs2_flush_wbuf_gc(c, i) ({ do{} while(0); (void)(c), (void) i, 0; })
 #define jffs2_write_nand_badblock(c,jeb,bad_offset) (1)
@@ -108,8 +108,6 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
 
 #define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
 
-#define jffs2_flash_write_oob(c, ofs, len, retlen, buf) ((c)->mtd->write_oob((c)->mtd, ofs, len, retlen, buf))
-#define jffs2_flash_read_oob(c, ofs, len, retlen, buf) ((c)->mtd->read_oob((c)->mtd, ofs, len, retlen, buf))
 #define jffs2_wbuf_dirty(c) (!!(c)->wbuf_len)
 
 /* wbuf.c */
diff --git a/fs/jffs2/read.c b/fs/jffs2/read.c
index 3f39be1b0455..0b042b1fc82f 100644
--- a/fs/jffs2/read.c
+++ b/fs/jffs2/read.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/crc32.h>
@@ -36,24 +38,25 @@ int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
         ret = jffs2_flash_read(c, ref_offset(fd->raw), sizeof(*ri), &readlen, (char *)ri);
         if (ret) {
                 jffs2_free_raw_inode(ri);
-                printk(KERN_WARNING "Error reading node from 0x%08x: %d\n", ref_offset(fd->raw), ret);
+                pr_warn("Error reading node from 0x%08x: %d\n",
+                        ref_offset(fd->raw), ret);
                 return ret;
         }
         if (readlen != sizeof(*ri)) {
                 jffs2_free_raw_inode(ri);
-                printk(KERN_WARNING "Short read from 0x%08x: wanted 0x%zx bytes, got 0x%zx\n",
-                       ref_offset(fd->raw), sizeof(*ri), readlen);
+                pr_warn("Short read from 0x%08x: wanted 0x%zx bytes, got 0x%zx\n",
+                        ref_offset(fd->raw), sizeof(*ri), readlen);
                 return -EIO;
         }
         crc = crc32(0, ri, sizeof(*ri)-8);
 
-        D1(printk(KERN_DEBUG "Node read from %08x: node_crc %08x, calculated CRC %08x. dsize %x, csize %x, offset %x, buf %p\n",
+        jffs2_dbg(1, "Node read from %08x: node_crc %08x, calculated CRC %08x. dsize %x, csize %x, offset %x, buf %p\n",
                   ref_offset(fd->raw), je32_to_cpu(ri->node_crc),
                   crc, je32_to_cpu(ri->dsize), je32_to_cpu(ri->csize),
-                  je32_to_cpu(ri->offset), buf));
+                  je32_to_cpu(ri->offset), buf);
         if (crc != je32_to_cpu(ri->node_crc)) {
-                printk(KERN_WARNING "Node CRC %08x != calculated CRC %08x for node at %08x\n",
-                       je32_to_cpu(ri->node_crc), crc, ref_offset(fd->raw));
+                pr_warn("Node CRC %08x != calculated CRC %08x for node at %08x\n",
+                        je32_to_cpu(ri->node_crc), crc, ref_offset(fd->raw));
                 ret = -EIO;
                 goto out_ri;
         }
@@ -66,8 +69,8 @@ int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
         }
 
         D1(if(ofs + len > je32_to_cpu(ri->dsize)) {
-                printk(KERN_WARNING "jffs2_read_dnode() asked for %d bytes at %d from %d-byte node\n",
-                       len, ofs, je32_to_cpu(ri->dsize));
+                        pr_warn("jffs2_read_dnode() asked for %d bytes at %d from %d-byte node\n",
+                                len, ofs, je32_to_cpu(ri->dsize));
                 ret = -EINVAL;
                 goto out_ri;
         });
@@ -107,8 +110,8 @@ int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                 decomprbuf = readbuf;
         }
 
-        D2(printk(KERN_DEBUG "Read %d bytes to %p\n", je32_to_cpu(ri->csize),
-                  readbuf));
+        jffs2_dbg(2, "Read %d bytes to %p\n", je32_to_cpu(ri->csize),
+                  readbuf);
         ret = jffs2_flash_read(c, (ref_offset(fd->raw)) + sizeof(*ri),
                                je32_to_cpu(ri->csize), &readlen, readbuf);
 
@@ -119,18 +122,19 @@ int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 
         crc = crc32(0, readbuf, je32_to_cpu(ri->csize));
         if (crc != je32_to_cpu(ri->data_crc)) {
-                printk(KERN_WARNING "Data CRC %08x != calculated CRC %08x for node at %08x\n",
-                       je32_to_cpu(ri->data_crc), crc, ref_offset(fd->raw));
+                pr_warn("Data CRC %08x != calculated CRC %08x for node at %08x\n",
+                        je32_to_cpu(ri->data_crc), crc, ref_offset(fd->raw));
                 ret = -EIO;
                 goto out_decomprbuf;
         }
-        D2(printk(KERN_DEBUG "Data CRC matches calculated CRC %08x\n", crc));
+        jffs2_dbg(2, "Data CRC matches calculated CRC %08x\n", crc);
         if (ri->compr != JFFS2_COMPR_NONE) {
-                D2(printk(KERN_DEBUG "Decompress %d bytes from %p to %d bytes at %p\n",
-                          je32_to_cpu(ri->csize), readbuf, je32_to_cpu(ri->dsize), decomprbuf));
+                jffs2_dbg(2, "Decompress %d bytes from %p to %d bytes at %p\n",
+                          je32_to_cpu(ri->csize), readbuf,
+                          je32_to_cpu(ri->dsize), decomprbuf);
                 ret = jffs2_decompress(c, f, ri->compr | (ri->usercompr << 8), readbuf, decomprbuf, je32_to_cpu(ri->csize), je32_to_cpu(ri->dsize));
                 if (ret) {
-                        printk(KERN_WARNING "Error: jffs2_decompress returned %d\n", ret);
+                        pr_warn("Error: jffs2_decompress returned %d\n", ret);
                         goto out_decomprbuf;
                 }
         }
@@ -157,8 +161,8 @@ int jffs2_read_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
         struct jffs2_node_frag *frag;
         int ret;
 
-        D1(printk(KERN_DEBUG "jffs2_read_inode_range: ino #%u, range 0x%08x-0x%08x\n",
-                  f->inocache->ino, offset, offset+len));
+        jffs2_dbg(1, "%s(): ino #%u, range 0x%08x-0x%08x\n",
+                  __func__, f->inocache->ino, offset, offset + len);
 
         frag = jffs2_lookup_node_frag(&f->fragtree, offset);
 
@@ -168,22 +172,27 @@ int jffs2_read_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
          * (or perhaps is before it, if we've been asked to read off the
          * end of the file). */
         while(offset < end) {
-                D2(printk(KERN_DEBUG "jffs2_read_inode_range: offset %d, end %d\n", offset, end));
+                jffs2_dbg(2, "%s(): offset %d, end %d\n",
+                          __func__, offset, end);
                 if (unlikely(!frag || frag->ofs > offset ||
                              frag->ofs + frag->size <= offset)) {
                         uint32_t holesize = end - offset;
                         if (frag && frag->ofs > offset) {
-                                D1(printk(KERN_NOTICE "Eep. Hole in ino #%u fraglist. frag->ofs = 0x%08x, offset = 0x%08x\n", f->inocache->ino, frag->ofs, offset));
+                                jffs2_dbg(1, "Eep. Hole in ino #%u fraglist. frag->ofs = 0x%08x, offset = 0x%08x\n",
+                                          f->inocache->ino, frag->ofs, offset);
                                 holesize = min(holesize, frag->ofs - offset);
                         }
-                        D1(printk(KERN_DEBUG "Filling non-frag hole from %d-%d\n", offset, offset+holesize));
+                        jffs2_dbg(1, "Filling non-frag hole from %d-%d\n",
+                                  offset, offset + holesize);
                         memset(buf, 0, holesize);
                         buf += holesize;
                         offset += holesize;
                         continue;
                 } else if (unlikely(!frag->node)) {
                         uint32_t holeend = min(end, frag->ofs + frag->size);
-                        D1(printk(KERN_DEBUG "Filling frag hole from %d-%d (frag 0x%x 0x%x)\n", offset, holeend, frag->ofs, frag->ofs + frag->size));
+                        jffs2_dbg(1, "Filling frag hole from %d-%d (frag 0x%x 0x%x)\n",
+                                  offset, holeend, frag->ofs,
+                                  frag->ofs + frag->size);
                         memset(buf, 0, holeend - offset);
                         buf += holeend - offset;
                         offset = holeend;
@@ -195,20 +204,23 @@ int jffs2_read_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 
                         fragofs = offset - frag->ofs;
                         readlen = min(frag->size - fragofs, end - offset);
-                        D1(printk(KERN_DEBUG "Reading %d-%d from node at 0x%08x (%d)\n",
-                                  frag->ofs+fragofs, frag->ofs+fragofs+readlen,
-                                  ref_offset(frag->node->raw), ref_flags(frag->node->raw)));
+                        jffs2_dbg(1, "Reading %d-%d from node at 0x%08x (%d)\n",
+                                  frag->ofs+fragofs,
+                                  frag->ofs + fragofs+readlen,
+                                  ref_offset(frag->node->raw),
+                                  ref_flags(frag->node->raw));
                         ret = jffs2_read_dnode(c, f, frag->node, buf, fragofs + frag->ofs - frag->node->ofs, readlen);
-                        D2(printk(KERN_DEBUG "node read done\n"));
+                        jffs2_dbg(2, "node read done\n");
                         if (ret) {
-                                D1(printk(KERN_DEBUG"jffs2_read_inode_range error %d\n",ret));
+                                jffs2_dbg(1, "%s(): error %d\n",
+                                          __func__, ret);
                                 memset(buf, 0, readlen);
                                 return ret;
                         }
                         buf += readlen;
                         offset += readlen;
                         frag = frag_next(frag);
-                        D2(printk(KERN_DEBUG "node read was OK. Looping\n"));
+                        jffs2_dbg(2, "node read was OK. Looping\n");
                 }
         }
         return 0;
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index 3093ac4fb24c..dc0437e84763 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index f99464833bb2..7654e87b0428 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
@@ -22,15 +24,15 @@
 
 #define DEFAULT_EMPTY_SCAN_SIZE 256
 
-#define noisy_printk(noise, args...) do { \
-        if (*(noise)) { \
-                printk(KERN_NOTICE args); \
-                 (*(noise))--; \
-                 if (!(*(noise))) { \
-                         printk(KERN_NOTICE "Further such events for this erase block will not be printed\n"); \
-                 } \
-        } \
-} while(0)
+#define noisy_printk(noise, fmt, ...)                                   \
+do {                                                                    \
+        if (*(noise)) {                                                 \
+                pr_notice(fmt, ##__VA_ARGS__);                          \
+                (*(noise))--;                                           \
+                if (!(*(noise)))                                        \
+                        pr_notice("Further such events for this erase block will not be printed\n"); \
+        }                                                               \
+} while (0)
 
 static uint32_t pseudo_random;
 
@@ -96,18 +98,17 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
 #ifndef __ECOS
         size_t pointlen, try_size;
 
-        if (c->mtd->point) {
-                ret = mtd_point(c->mtd, 0, c->mtd->size, &pointlen,
-                                (void **)&flashbuf, NULL);
-                if (!ret && pointlen < c->mtd->size) {
-                        /* Don't muck about if it won't let us point to the whole flash */
-                        D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", pointlen));
-                        mtd_unpoint(c->mtd, 0, pointlen);
-                        flashbuf = NULL;
-                }
-                if (ret && ret != -EOPNOTSUPP)
-                        D1(printk(KERN_DEBUG "MTD point failed %d\n", ret));
+        ret = mtd_point(c->mtd, 0, c->mtd->size, &pointlen,
+                        (void **)&flashbuf, NULL);
+        if (!ret && pointlen < c->mtd->size) {
+                /* Don't muck about if it won't let us point to the whole flash */
+                jffs2_dbg(1, "MTD point returned len too short: 0x%zx\n",
+                          pointlen);
+                mtd_unpoint(c->mtd, 0, pointlen);
+                flashbuf = NULL;
         }
+        if (ret && ret != -EOPNOTSUPP)
+                jffs2_dbg(1, "MTD point failed %d\n", ret);
 #endif
         if (!flashbuf) {
                 /* For NAND it's quicker to read a whole eraseblock at a time,
@@ -117,15 +118,15 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
                 else
                         try_size = PAGE_SIZE;
 
-                D1(printk(KERN_DEBUG "Trying to allocate readbuf of %zu "
-                        "bytes\n", try_size));
+                jffs2_dbg(1, "Trying to allocate readbuf of %zu "
+                          "bytes\n", try_size);
 
                 flashbuf = mtd_kmalloc_up_to(c->mtd, &try_size);
                 if (!flashbuf)
                         return -ENOMEM;
 
-                D1(printk(KERN_DEBUG "Allocated readbuf of %zu bytes\n",
-                        try_size));
+                jffs2_dbg(1, "Allocated readbuf of %zu bytes\n",
+                          try_size);
 
                 buf_size = (uint32_t)try_size;
         }
@@ -178,7 +179,8 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
                                 c->nr_free_blocks++;
                         } else {
                                 /* Dirt */
-                                D1(printk(KERN_DEBUG "Adding all-dirty block at 0x%08x to erase_pending_list\n", jeb->offset));
+                                jffs2_dbg(1, "Adding all-dirty block at 0x%08x to erase_pending_list\n",
+                                          jeb->offset);
                                 list_add(&jeb->list, &c->erase_pending_list);
                                 c->nr_erasing_blocks++;
                         }
@@ -205,7 +207,8 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
                                 }
                                 /* update collected summary information for the current nextblock */
                                 jffs2_sum_move_collected(c, s);
-                                D1(printk(KERN_DEBUG "jffs2_scan_medium(): new nextblock = 0x%08x\n", jeb->offset));
+                                jffs2_dbg(1, "%s(): new nextblock = 0x%08x\n",
+                                          __func__, jeb->offset);
                                 c->nextblock = jeb;
                         } else {
                                 ret = file_dirty(c, jeb);
@@ -217,20 +220,21 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
                 case BLK_STATE_ALLDIRTY:
                         /* Nothing valid - not even a clean marker. Needs erasing. */
                         /* For now we just put it on the erasing list. We'll start the erases later */
-                        D1(printk(KERN_NOTICE "JFFS2: Erase block at 0x%08x is not formatted. It will be erased\n", jeb->offset));
+                        jffs2_dbg(1, "Erase block at 0x%08x is not formatted. It will be erased\n",
+                                  jeb->offset);
                         list_add(&jeb->list, &c->erase_pending_list);
                         c->nr_erasing_blocks++;
                         break;
 
                 case BLK_STATE_BADBLOCK:
-                        D1(printk(KERN_NOTICE "JFFS2: Block at 0x%08x is bad\n", jeb->offset));
+                        jffs2_dbg(1, "Block at 0x%08x is bad\n", jeb->offset);
                         list_add(&jeb->list, &c->bad_list);
                         c->bad_size += c->sector_size;
                         c->free_size -= c->sector_size;
                         bad_blocks++;
                         break;
                 default:
-                        printk(KERN_WARNING "jffs2_scan_medium(): unknown block state\n");
+                        pr_warn("%s(): unknown block state\n", __func__);
                         BUG();
                 }
         }
@@ -250,16 +254,17 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
 
                 uint32_t skip = c->nextblock->free_size % c->wbuf_pagesize;
 
-                D1(printk(KERN_DEBUG "jffs2_scan_medium(): Skipping %d bytes in nextblock to ensure page alignment\n",
-                          skip));
+                jffs2_dbg(1, "%s(): Skipping %d bytes in nextblock to ensure page alignment\n",
+                          __func__, skip);
                 jffs2_prealloc_raw_node_refs(c, c->nextblock, 1);
                 jffs2_scan_dirty_space(c, c->nextblock, skip);
         }
 #endif
         if (c->nr_erasing_blocks) {
                 if ( !c->used_size && ((c->nr_free_blocks+empty_blocks+bad_blocks)!= c->nr_blocks || bad_blocks == c->nr_blocks) ) {
-                        printk(KERN_NOTICE "Cowardly refusing to erase blocks on filesystem with no valid JFFS2 nodes\n");
-                        printk(KERN_NOTICE "empty_blocks %d, bad_blocks %d, c->nr_blocks %d\n",empty_blocks,bad_blocks,c->nr_blocks);
+                        pr_notice("Cowardly refusing to erase blocks on filesystem with no valid JFFS2 nodes\n");
+                        pr_notice("empty_blocks %d, bad_blocks %d, c->nr_blocks %d\n",
+                                  empty_blocks, bad_blocks, c->nr_blocks);
                         ret = -EIO;
                         goto out;
                 }
@@ -287,11 +292,13 @@ static int jffs2_fill_scan_buf(struct jffs2_sb_info *c, void *buf,
 
         ret = jffs2_flash_read(c, ofs, len, &retlen, buf);
         if (ret) {
-                D1(printk(KERN_WARNING "mtd->read(0x%x bytes from 0x%x) returned %d\n", len, ofs, ret));
+                jffs2_dbg(1, "mtd->read(0x%x bytes from 0x%x) returned %d\n",
+                          len, ofs, ret);
                 return ret;
         }
         if (retlen < len) {
-                D1(printk(KERN_WARNING "Read at 0x%x gave only 0x%zx bytes\n", ofs, retlen));
+                jffs2_dbg(1, "Read at 0x%x gave only 0x%zx bytes\n",
+                          ofs, retlen);
                 return -EIO;
         }
         return 0;
@@ -368,7 +375,7 @@ static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
 
         if (jffs2_sum_active())
                 jffs2_sum_add_xattr_mem(s, rx, ofs - jeb->offset);
-        dbg_xattr("scaning xdatum at %#08x (xid=%u, version=%u)\n",
+        dbg_xattr("scanning xdatum at %#08x (xid=%u, version=%u)\n",
                   ofs, xd->xid, xd->version);
         return 0;
 }
@@ -449,7 +456,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
         ofs = jeb->offset;
         prevofs = jeb->offset - 1;
 
-        D1(printk(KERN_DEBUG "jffs2_scan_eraseblock(): Scanning block at 0x%x\n", ofs));
+        jffs2_dbg(1, "%s(): Scanning block at 0x%x\n", __func__, ofs);
 
 #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
         if (jffs2_cleanmarker_oob(c)) {
@@ -459,7 +466,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
                         return BLK_STATE_BADBLOCK;
 
                 ret = jffs2_check_nand_cleanmarker(c, jeb);
-                D2(printk(KERN_NOTICE "jffs_check_nand_cleanmarker returned %d\n",ret));
+                jffs2_dbg(2, "jffs_check_nand_cleanmarker returned %d\n", ret);
 
                 /* Even if it's not found, we still scan to see
                    if the block is empty. We use this information
@@ -561,7 +568,8 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
                 if (jffs2_cleanmarker_oob(c)) {
                         /* scan oob, take care of cleanmarker */
                         int ret = jffs2_check_oob_empty(c, jeb, cleanmarkerfound);
-                        D2(printk(KERN_NOTICE "jffs2_check_oob_empty returned %d\n",ret));
+                        jffs2_dbg(2, "jffs2_check_oob_empty returned %d\n",
+                                  ret);
                         switch (ret) {
                         case 0:         return cleanmarkerfound ? BLK_STATE_CLEANMARKER : BLK_STATE_ALLFF;
                         case 1:         return BLK_STATE_ALLDIRTY;
@@ -569,15 +577,16 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
                         }
                 }
 #endif
-                D1(printk(KERN_DEBUG "Block at 0x%08x is empty (erased)\n", jeb->offset));
+                jffs2_dbg(1, "Block at 0x%08x is empty (erased)\n",
+                          jeb->offset);
                 if (c->cleanmarker_size == 0)
                         return BLK_STATE_CLEANMARKER;   /* don't bother with re-erase */
                 else
                         return BLK_STATE_ALLFF; /* OK to erase if all blocks are like this */
         }
         if (ofs) {
-                D1(printk(KERN_DEBUG "Free space at %08x ends at %08x\n", jeb->offset,
-                          jeb->offset + ofs));
+                jffs2_dbg(1, "Free space at %08x ends at %08x\n", jeb->offset,
+                          jeb->offset + ofs);
                 if ((err = jffs2_prealloc_raw_node_refs(c, jeb, 1)))
                         return err;
                 if ((err = jffs2_scan_dirty_space(c, jeb, ofs)))
@@ -604,12 +613,13 @@ scan_more:
                 cond_resched();
 
                 if (ofs & 3) {
-                        printk(KERN_WARNING "Eep. ofs 0x%08x not word-aligned!\n", ofs);
+                        pr_warn("Eep. ofs 0x%08x not word-aligned!\n", ofs);
                         ofs = PAD(ofs);
                         continue;
                 }
                 if (ofs == prevofs) {
-                        printk(KERN_WARNING "ofs 0x%08x has already been seen. Skipping\n", ofs);
+                        pr_warn("ofs 0x%08x has already been seen. Skipping\n",
+                                ofs);
                         if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
                                 return err;
                         ofs += 4;
@@ -618,8 +628,10 @@ scan_more:
                 prevofs = ofs;
 
                 if (jeb->offset + c->sector_size < ofs + sizeof(*node)) {
-                        D1(printk(KERN_DEBUG "Fewer than %zd bytes left to end of block. (%x+%x<%x+%zx) Not reading\n", sizeof(struct jffs2_unknown_node),
-                                  jeb->offset, c->sector_size, ofs, sizeof(*node)));
+                        jffs2_dbg(1, "Fewer than %zd bytes left to end of block. (%x+%x<%x+%zx) Not reading\n",
+                                  sizeof(struct jffs2_unknown_node),
+                                  jeb->offset, c->sector_size, ofs,
+                                  sizeof(*node));
                         if ((err = jffs2_scan_dirty_space(c, jeb, (jeb->offset + c->sector_size)-ofs)))
                                 return err;
                         break;
@@ -627,8 +639,9 @@ scan_more:
 
                 if (buf_ofs + buf_len < ofs + sizeof(*node)) {
                         buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
-                        D1(printk(KERN_DEBUG "Fewer than %zd bytes (node header) left to end of buf. Reading 0x%x at 0x%08x\n",
-                                  sizeof(struct jffs2_unknown_node), buf_len, ofs));
+                        jffs2_dbg(1, "Fewer than %zd bytes (node header) left to end of buf. Reading 0x%x at 0x%08x\n",
+                                  sizeof(struct jffs2_unknown_node),
+                                  buf_len, ofs);
                         err = jffs2_fill_scan_buf(c, buf, ofs, buf_len);
                         if (err)
                                 return err;
@@ -645,13 +658,13 @@ scan_more:
                         ofs += 4;
                         scan_end = min_t(uint32_t, EMPTY_SCAN_SIZE(c->sector_size)/8, buf_len);
 
-                        D1(printk(KERN_DEBUG "Found empty flash at 0x%08x\n", ofs));
+                        jffs2_dbg(1, "Found empty flash at 0x%08x\n", ofs);
                 more_empty:
                         inbuf_ofs = ofs - buf_ofs;
                         while (inbuf_ofs < scan_end) {
                                 if (unlikely(*(uint32_t *)(&buf[inbuf_ofs]) != 0xffffffff)) {
-                                        printk(KERN_WARNING "Empty flash at 0x%08x ends at 0x%08x\n",
-                                               empty_start, ofs);
+                                        pr_warn("Empty flash at 0x%08x ends at 0x%08x\n",
+                                                empty_start, ofs);
                                         if ((err = jffs2_scan_dirty_space(c, jeb, ofs-empty_start)))
                                                 return err;
                                         goto scan_more;
@@ -661,13 +674,15 @@ scan_more:
                                 ofs += 4;
                         }
                         /* Ran off end. */
-                        D1(printk(KERN_DEBUG "Empty flash to end of buffer at 0x%08x\n", ofs));
+                        jffs2_dbg(1, "Empty flash to end of buffer at 0x%08x\n",
+                                  ofs);
 
                         /* If we're only checking the beginning of a block with a cleanmarker,
                            bail now */
                         if (buf_ofs == jeb->offset && jeb->used_size == PAD(c->cleanmarker_size) &&
                             c->cleanmarker_size && !jeb->dirty_size && !ref_next(jeb->first_node)) {
-                                D1(printk(KERN_DEBUG "%d bytes at start of block seems clean... assuming all clean\n", EMPTY_SCAN_SIZE(c->sector_size)));
+                                jffs2_dbg(1, "%d bytes at start of block seems clean... assuming all clean\n",
+                                          EMPTY_SCAN_SIZE(c->sector_size));
                                 return BLK_STATE_CLEANMARKER;
                         }
                         if (!buf_size && (scan_end != buf_len)) {/* XIP/point case */
@@ -680,13 +695,14 @@ scan_more:
                         if (!buf_len) {
                                 /* No more to read. Break out of main loop without marking
                                    this range of empty space as dirty (because it's not) */
-                                D1(printk(KERN_DEBUG "Empty flash at %08x runs to end of block. Treating as free_space\n",
-                                          empty_start));
+                                jffs2_dbg(1, "Empty flash at %08x runs to end of block. Treating as free_space\n",
+                                          empty_start);
                                 break;
                         }
                         /* point never reaches here */
                         scan_end = buf_len;
-                        D1(printk(KERN_DEBUG "Reading another 0x%x at 0x%08x\n", buf_len, ofs));
+                        jffs2_dbg(1, "Reading another 0x%x at 0x%08x\n",
+                                  buf_len, ofs);
                         err = jffs2_fill_scan_buf(c, buf, ofs, buf_len);
                         if (err)
                                 return err;
@@ -695,22 +711,23 @@ scan_more:
                 }
 
                 if (ofs == jeb->offset && je16_to_cpu(node->magic) == KSAMTIB_CIGAM_2SFFJ) {
-                        printk(KERN_WARNING "Magic bitmask is backwards at offset 0x%08x. Wrong endian filesystem?\n", ofs);
+                        pr_warn("Magic bitmask is backwards at offset 0x%08x. Wrong endian filesystem?\n",
+                                ofs);
                         if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
                                 return err;
                         ofs += 4;
                         continue;
                 }
                 if (je16_to_cpu(node->magic) == JFFS2_DIRTY_BITMASK) {
-                        D1(printk(KERN_DEBUG "Dirty bitmask at 0x%08x\n", ofs));
+                        jffs2_dbg(1, "Dirty bitmask at 0x%08x\n", ofs);
                         if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
                                 return err;
                         ofs += 4;
                         continue;
                 }
                 if (je16_to_cpu(node->magic) == JFFS2_OLD_MAGIC_BITMASK) {
-                        printk(KERN_WARNING "Old JFFS2 bitmask found at 0x%08x\n", ofs);
-                        printk(KERN_WARNING "You cannot use older JFFS2 filesystems with newer kernels\n");
+                        pr_warn("Old JFFS2 bitmask found at 0x%08x\n", ofs);
+                        pr_warn("You cannot use older JFFS2 filesystems with newer kernels\n");
                         if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
                                 return err;
                         ofs += 4;
@@ -718,7 +735,8 @@ scan_more:
                 }
                 if (je16_to_cpu(node->magic) != JFFS2_MAGIC_BITMASK) {
                         /* OK. We're out of possibilities. Whinge and move on */
-                        noisy_printk(&noise, "jffs2_scan_eraseblock(): Magic bitmask 0x%04x not found at 0x%08x: 0x%04x instead\n",
+                        noisy_printk(&noise, "%s(): Magic bitmask 0x%04x not found at 0x%08x: 0x%04x instead\n",
+                                     __func__,
                                      JFFS2_MAGIC_BITMASK, ofs,
                                      je16_to_cpu(node->magic));
                         if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
@@ -733,7 +751,8 @@ scan_more:
                 hdr_crc = crc32(0, &crcnode, sizeof(crcnode)-4);
 
                 if (hdr_crc != je32_to_cpu(node->hdr_crc)) {
-                        noisy_printk(&noise, "jffs2_scan_eraseblock(): Node at 0x%08x {0x%04x, 0x%04x, 0x%08x) has invalid CRC 0x%08x (calculated 0x%08x)\n",
+                        noisy_printk(&noise, "%s(): Node at 0x%08x {0x%04x, 0x%04x, 0x%08x) has invalid CRC 0x%08x (calculated 0x%08x)\n",
+                                     __func__,
                                      ofs, je16_to_cpu(node->magic),
                                      je16_to_cpu(node->nodetype),
                                      je32_to_cpu(node->totlen),
@@ -747,9 +766,9 @@ scan_more:
 
                 if (ofs + je32_to_cpu(node->totlen) > jeb->offset + c->sector_size) {
                         /* Eep. Node goes over the end of the erase block. */
-                        printk(KERN_WARNING "Node at 0x%08x with length 0x%08x would run over the end of the erase block\n",
-                               ofs, je32_to_cpu(node->totlen));
-                        printk(KERN_WARNING "Perhaps the file system was created with the wrong erase size?\n");
+                        pr_warn("Node at 0x%08x with length 0x%08x would run over the end of the erase block\n",
+                                ofs, je32_to_cpu(node->totlen));
+                        pr_warn("Perhaps the file system was created with the wrong erase size?\n");
                         if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
                                 return err;
                         ofs += 4;
@@ -758,7 +777,8 @@ scan_more:
 
                 if (!(je16_to_cpu(node->nodetype) & JFFS2_NODE_ACCURATE)) {
                         /* Wheee. This is an obsoleted node */
-                        D2(printk(KERN_DEBUG "Node at 0x%08x is obsolete. Skipping\n", ofs));
+                        jffs2_dbg(2, "Node at 0x%08x is obsolete. Skipping\n",
+                                  ofs);
                         if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
                                 return err;
                         ofs += PAD(je32_to_cpu(node->totlen));
@@ -769,8 +789,9 @@ scan_more:
                 case JFFS2_NODETYPE_INODE:
                         if (buf_ofs + buf_len < ofs + sizeof(struct jffs2_raw_inode)) {
                                 buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
-                                D1(printk(KERN_DEBUG "Fewer than %zd bytes (inode node) left to end of buf. Reading 0x%x at 0x%08x\n",
-                                          sizeof(struct jffs2_raw_inode), buf_len, ofs));
+                                jffs2_dbg(1, "Fewer than %zd bytes (inode node) left to end of buf. Reading 0x%x at 0x%08x\n",
+                                          sizeof(struct jffs2_raw_inode),
+                                          buf_len, ofs);
                                 err = jffs2_fill_scan_buf(c, buf, ofs, buf_len);
                                 if (err)
                                         return err;
@@ -785,8 +806,9 @@ scan_more:
                 case JFFS2_NODETYPE_DIRENT:
                         if (buf_ofs + buf_len < ofs + je32_to_cpu(node->totlen)) {
                                 buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
-                                D1(printk(KERN_DEBUG "Fewer than %d bytes (dirent node) left to end of buf. Reading 0x%x at 0x%08x\n",
-                                          je32_to_cpu(node->totlen), buf_len, ofs));
+                                jffs2_dbg(1, "Fewer than %d bytes (dirent node) left to end of buf. Reading 0x%x at 0x%08x\n",
+                                          je32_to_cpu(node->totlen), buf_len,
+                                          ofs);
                                 err = jffs2_fill_scan_buf(c, buf, ofs, buf_len);
                                 if (err)
                                         return err;
@@ -802,9 +824,9 @@ scan_more:
                 case JFFS2_NODETYPE_XATTR:
                         if (buf_ofs + buf_len < ofs + je32_to_cpu(node->totlen)) {
                                 buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
-                                D1(printk(KERN_DEBUG "Fewer than %d bytes (xattr node)"
-                                          " left to end of buf. Reading 0x%x at 0x%08x\n",
-                                          je32_to_cpu(node->totlen), buf_len, ofs));
+                                jffs2_dbg(1, "Fewer than %d bytes (xattr node) left to end of buf. Reading 0x%x at 0x%08x\n",
+                                          je32_to_cpu(node->totlen), buf_len,
+                                          ofs);
                                 err = jffs2_fill_scan_buf(c, buf, ofs, buf_len);
                                 if (err)
                                         return err;
@@ -819,9 +841,9 @@ scan_more:
                 case JFFS2_NODETYPE_XREF:
                         if (buf_ofs + buf_len < ofs + je32_to_cpu(node->totlen)) {
                                 buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
-                                D1(printk(KERN_DEBUG "Fewer than %d bytes (xref node)"
-                                          " left to end of buf. Reading 0x%x at 0x%08x\n",
-                                          je32_to_cpu(node->totlen), buf_len, ofs));
+                                jffs2_dbg(1, "Fewer than %d bytes (xref node) left to end of buf. Reading 0x%x at 0x%08x\n",
+                                          je32_to_cpu(node->totlen), buf_len,
+                                          ofs);
                                 err = jffs2_fill_scan_buf(c, buf, ofs, buf_len);
                                 if (err)
                                         return err;
@@ -836,15 +858,17 @@ scan_more:
 #endif  /* CONFIG_JFFS2_FS_XATTR */
 
                 case JFFS2_NODETYPE_CLEANMARKER:
-                        D1(printk(KERN_DEBUG "CLEANMARKER node found at 0x%08x\n", ofs));
+                        jffs2_dbg(1, "CLEANMARKER node found at 0x%08x\n", ofs);
                         if (je32_to_cpu(node->totlen) != c->cleanmarker_size) {
-                                printk(KERN_NOTICE "CLEANMARKER node found at 0x%08x has totlen 0x%x != normal 0x%x\n",
-                                       ofs, je32_to_cpu(node->totlen), c->cleanmarker_size);
+                                pr_notice("CLEANMARKER node found at 0x%08x has totlen 0x%x != normal 0x%x\n",
+                                          ofs, je32_to_cpu(node->totlen),
+                                          c->cleanmarker_size);
                                 if ((err = jffs2_scan_dirty_space(c, jeb, PAD(sizeof(struct jffs2_unknown_node)))))
                                         return err;
                                 ofs += PAD(sizeof(struct jffs2_unknown_node));
                         } else if (jeb->first_node) {
-                                printk(KERN_NOTICE "CLEANMARKER node found at 0x%08x, not first node in block (0x%08x)\n", ofs, jeb->offset);
+                                pr_notice("CLEANMARKER node found at 0x%08x, not first node in block (0x%08x)\n",
+                                          ofs, jeb->offset);
                                 if ((err = jffs2_scan_dirty_space(c, jeb, PAD(sizeof(struct jffs2_unknown_node)))))
                                         return err;
                                 ofs += PAD(sizeof(struct jffs2_unknown_node));
@@ -866,7 +890,8 @@ scan_more:
                 default:
                         switch (je16_to_cpu(node->nodetype) & JFFS2_COMPAT_MASK) {
                         case JFFS2_FEATURE_ROCOMPAT:
-                                printk(KERN_NOTICE "Read-only compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs);
+                                pr_notice("Read-only compatible feature node (0x%04x) found at offset 0x%08x\n",
+                                          je16_to_cpu(node->nodetype), ofs);
                                 c->flags |= JFFS2_SB_FLAG_RO;
                                 if (!(jffs2_is_readonly(c)))
                                         return -EROFS;
@@ -876,18 +901,21 @@ scan_more:
                                 break;
 
                         case JFFS2_FEATURE_INCOMPAT:
-                                printk(KERN_NOTICE "Incompatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs);
+                                pr_notice("Incompatible feature node (0x%04x) found at offset 0x%08x\n",
+                                          je16_to_cpu(node->nodetype), ofs);
                                 return -EINVAL;
 
                         case JFFS2_FEATURE_RWCOMPAT_DELETE:
-                                D1(printk(KERN_NOTICE "Unknown but compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs));
+                                jffs2_dbg(1, "Unknown but compatible feature node (0x%04x) found at offset 0x%08x\n",
+                                          je16_to_cpu(node->nodetype), ofs);
                                 if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
                                         return err;
                                 ofs += PAD(je32_to_cpu(node->totlen));
                                 break;
 
                         case JFFS2_FEATURE_RWCOMPAT_COPY: {
-                                D1(printk(KERN_NOTICE "Unknown but compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs));
+                                jffs2_dbg(1, "Unknown but compatible feature node (0x%04x) found at offset 0x%08x\n",
+                                          je16_to_cpu(node->nodetype), ofs);
 
                                 jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(node->totlen)), NULL);
 
@@ -908,8 +936,9 @@ scan_more:
                 }
         }
 
-        D1(printk(KERN_DEBUG "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x, wasted 0x%08x\n",
-                  jeb->offset,jeb->free_size, jeb->dirty_size, jeb->unchecked_size, jeb->used_size, jeb->wasted_size));
+        jffs2_dbg(1, "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x, wasted 0x%08x\n",
+                  jeb->offset, jeb->free_size, jeb->dirty_size,
+                  jeb->unchecked_size, jeb->used_size, jeb->wasted_size);
         
         /* mark_node_obsolete can add to wasted !! */
         if (jeb->wasted_size) {
@@ -935,7 +964,7 @@ struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uin
 
         ic = jffs2_alloc_inode_cache();
         if (!ic) {
-                printk(KERN_NOTICE "jffs2_scan_make_inode_cache(): allocation of inode cache failed\n");
+                pr_notice("%s(): allocation of inode cache failed\n", __func__);
                 return NULL;
         }
         memset(ic, 0, sizeof(*ic));
@@ -954,7 +983,7 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
         struct jffs2_inode_cache *ic;
         uint32_t crc, ino = je32_to_cpu(ri->ino);
 
-        D1(printk(KERN_DEBUG "jffs2_scan_inode_node(): Node at 0x%08x\n", ofs));
+        jffs2_dbg(1, "%s(): Node at 0x%08x\n", __func__, ofs);
 
         /* We do very little here now. Just check the ino# to which we should attribute
            this node; we can do all the CRC checking etc. later. There's a tradeoff here --
@@ -968,9 +997,8 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
         /* Check the node CRC in any case. */
         crc = crc32(0, ri, sizeof(*ri)-8);
         if (crc != je32_to_cpu(ri->node_crc)) {
-                printk(KERN_NOTICE "jffs2_scan_inode_node(): CRC failed on "
-                       "node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
-                       ofs, je32_to_cpu(ri->node_crc), crc);
+                pr_notice("%s(): CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
+                          __func__, ofs, je32_to_cpu(ri->node_crc), crc);
                 /*
                  * We believe totlen because the CRC on the node
                  * _header_ was OK, just the node itself failed.
@@ -989,10 +1017,10 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
         /* Wheee. It worked */
         jffs2_link_node_ref(c, jeb, ofs | REF_UNCHECKED, PAD(je32_to_cpu(ri->totlen)), ic);
 
-        D1(printk(KERN_DEBUG "Node is ino #%u, version %d. Range 0x%x-0x%x\n",
+        jffs2_dbg(1, "Node is ino #%u, version %d. Range 0x%x-0x%x\n",
                   je32_to_cpu(ri->ino), je32_to_cpu(ri->version),
                   je32_to_cpu(ri->offset),
-                  je32_to_cpu(ri->offset)+je32_to_cpu(ri->dsize)));
+                  je32_to_cpu(ri->offset)+je32_to_cpu(ri->dsize));
 
         pseudo_random += je32_to_cpu(ri->version);
 
@@ -1012,15 +1040,15 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
         uint32_t crc;
         int err;
 
-        D1(printk(KERN_DEBUG "jffs2_scan_dirent_node(): Node at 0x%08x\n", ofs));
+        jffs2_dbg(1, "%s(): Node at 0x%08x\n", __func__, ofs);
 
         /* We don't get here unless the node is still valid, so we don't have to
            mask in the ACCURATE bit any more. */
         crc = crc32(0, rd, sizeof(*rd)-8);
 
         if (crc != je32_to_cpu(rd->node_crc)) {
-                printk(KERN_NOTICE "jffs2_scan_dirent_node(): Node CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
-                       ofs, je32_to_cpu(rd->node_crc), crc);
+                pr_notice("%s(): Node CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
+                          __func__, ofs, je32_to_cpu(rd->node_crc), crc);
                 /* We believe totlen because the CRC on the node _header_ was OK, just the node itself failed. */
                 if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rd->totlen)))))
                         return err;
@@ -1032,7 +1060,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
         /* Should never happen. Did. (OLPC trac #4184)*/
         checkedlen = strnlen(rd->name, rd->nsize);
         if (checkedlen < rd->nsize) {
-                printk(KERN_ERR "Dirent at %08x has zeroes in name. Truncating to %d chars\n",
+                pr_err("Dirent at %08x has zeroes in name. Truncating to %d chars\n",
                        ofs, checkedlen);
         }
         fd = jffs2_alloc_full_dirent(checkedlen+1);
@@ -1044,9 +1072,10 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
 
         crc = crc32(0, fd->name, rd->nsize);
         if (crc != je32_to_cpu(rd->name_crc)) {
-                printk(KERN_NOTICE "jffs2_scan_dirent_node(): Name CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
-                       ofs, je32_to_cpu(rd->name_crc), crc);
-                D1(printk(KERN_NOTICE "Name for which CRC failed is (now) '%s', ino #%d\n", fd->name, je32_to_cpu(rd->ino)));
+                pr_notice("%s(): Name CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
+                          __func__, ofs, je32_to_cpu(rd->name_crc), crc);
+                jffs2_dbg(1, "Name for which CRC failed is (now) '%s', ino #%d\n",
+                          fd->name, je32_to_cpu(rd->ino));
                 jffs2_free_full_dirent(fd);
                 /* FIXME: Why do we believe totlen? */
                 /* We believe totlen because the CRC on the node _header_ was OK, just the name failed. */
diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c
index 0f20208df602..aca97f35b292 100644
--- a/fs/jffs2/security.c
+++ b/fs/jffs2/security.c
@@ -23,8 +23,8 @@
 #include "nodelist.h"
 
 /* ---- Initial Security Label(s) Attachment callback --- */
-int jffs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
-                     void *fs_info)
+static int jffs2_initxattrs(struct inode *inode,
+                            const struct xattr *xattr_array, void *fs_info)
 {
         const struct xattr *xattr;
         int err = 0;
diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c
index e537fb0e0184..c522d098bb4f 100644
--- a/fs/jffs2/summary.c
+++ b/fs/jffs2/summary.c
@@ -11,6 +11,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/mtd/mtd.h>
@@ -442,13 +444,16 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras
                                 /* This should never happen, but https://dev.laptop.org/ticket/4184 */
                                 checkedlen = strnlen(spd->name, spd->nsize);
                                 if (!checkedlen) {
-                                        printk(KERN_ERR "Dirent at %08x has zero at start of name. Aborting mount.\n",
-                                               jeb->offset + je32_to_cpu(spd->offset));
+                                        pr_err("Dirent at %08x has zero at start of name. Aborting mount.\n",
+                                               jeb->offset +
+                                               je32_to_cpu(spd->offset));
                                         return -EIO;
                                 }
                                 if (checkedlen < spd->nsize) {
-                                        printk(KERN_ERR "Dirent at %08x has zeroes in name. Truncating to %d chars\n",
-                                               jeb->offset + je32_to_cpu(spd->offset), checkedlen);
+                                        pr_err("Dirent at %08x has zeroes in name. Truncating to %d chars\n",
+                                               jeb->offset +
+                                               je32_to_cpu(spd->offset),
+                                               checkedlen);
                                 }
 
 
@@ -808,8 +813,7 @@ static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock
 
         sum_ofs = jeb->offset + c->sector_size - jeb->free_size;
 
-        dbg_summary("JFFS2: writing out data to flash to pos : 0x%08x\n",
-                    sum_ofs);
+        dbg_summary("writing out data to flash to pos : 0x%08x\n", sum_ofs);
 
         ret = jffs2_flash_writev(c, vecs, 2, sum_ofs, &retlen, 0);
 
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index f2d96b5e64f6..f9916f312bd8 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
@@ -69,7 +71,7 @@ static void jffs2_write_super(struct super_block *sb)
         sb->s_dirt = 0;
 
         if (!(sb->s_flags & MS_RDONLY)) {
-                D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
+                jffs2_dbg(1, "%s()\n", __func__);
                 jffs2_flush_wbuf_gc(c, 0);
         }
 
@@ -214,8 +216,8 @@ static int jffs2_parse_options(struct jffs2_sb_info *c, char *data)
                                                 JFFS2_COMPR_MODE_FORCEZLIB;
 #endif
                         else {
-                                printk(KERN_ERR "JFFS2 Error: unknown compressor \"%s\"",
-                                                name);
+                                pr_err("Error: unknown compressor \"%s\"\n",
+                                       name);
                                 kfree(name);
                                 return -EINVAL;
                         }
@@ -223,8 +225,8 @@ static int jffs2_parse_options(struct jffs2_sb_info *c, char *data)
                         c->mount_opts.override_compr = true;
                         break;
                 default:
-                        printk(KERN_ERR "JFFS2 Error: unrecognized mount option '%s' or missing value\n",
-                                        p);
+                        pr_err("Error: unrecognized mount option '%s' or missing value\n",
+                               p);
                         return -EINVAL;
                 }
         }
@@ -266,9 +268,9 @@ static int jffs2_fill_super(struct super_block *sb, void *data, int silent)
         struct jffs2_sb_info *c;
         int ret;
 
-        D1(printk(KERN_DEBUG "jffs2_get_sb_mtd():"
+        jffs2_dbg(1, "jffs2_get_sb_mtd():"
                   " New superblock for device %d (\"%s\")\n",
-                  sb->s_mtd->index, sb->s_mtd->name));
+                  sb->s_mtd->index, sb->s_mtd->name);
 
         c = kzalloc(sizeof(*c), GFP_KERNEL);
         if (!c)
@@ -315,7 +317,7 @@ static void jffs2_put_super (struct super_block *sb)
 {
         struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
 
-        D2(printk(KERN_DEBUG "jffs2: jffs2_put_super()\n"));
+        jffs2_dbg(2, "%s()\n", __func__);
 
         if (sb->s_dirt)
                 jffs2_write_super(sb);
@@ -336,7 +338,7 @@ static void jffs2_put_super (struct super_block *sb)
         kfree(c->inocache_list);
         jffs2_clear_xattr_subsystem(c);
         mtd_sync(c->mtd);
-        D1(printk(KERN_DEBUG "jffs2_put_super returning\n"));
+        jffs2_dbg(1, "%s(): returning\n", __func__);
 }
 
 static void jffs2_kill_sb(struct super_block *sb)
@@ -371,7 +373,7 @@ static int __init init_jffs2_fs(void)
         BUILD_BUG_ON(sizeof(struct jffs2_raw_inode) != 68);
         BUILD_BUG_ON(sizeof(struct jffs2_raw_summary) != 32);
 
-        printk(KERN_INFO "JFFS2 version 2.2."
+        pr_info("version 2.2."
 #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
                " (NAND)"
 #endif
@@ -386,22 +388,22 @@ static int __init init_jffs2_fs(void)
                                                 SLAB_MEM_SPREAD),
                                              jffs2_i_init_once);
         if (!jffs2_inode_cachep) {
-                printk(KERN_ERR "JFFS2 error: Failed to initialise inode cache\n");
+                pr_err("error: Failed to initialise inode cache\n");
                 return -ENOMEM;
         }
         ret = jffs2_compressors_init();
         if (ret) {
-                printk(KERN_ERR "JFFS2 error: Failed to initialise compressors\n");
+                pr_err("error: Failed to initialise compressors\n");
                 goto out;
         }
         ret = jffs2_create_slab_caches();
         if (ret) {
-                printk(KERN_ERR "JFFS2 error: Failed to initialise slab caches\n");
+                pr_err("error: Failed to initialise slab caches\n");
                 goto out_compressors;
         }
         ret = register_filesystem(&jffs2_fs_type);
         if (ret) {
-                printk(KERN_ERR "JFFS2 error: Failed to register filesystem\n");
+                pr_err("error: Failed to register filesystem\n");
                 goto out_slab;
         }
         return 0;
diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c
index e3035afb1814..6e563332bb24 100644
--- a/fs/jffs2/symlink.c
+++ b/fs/jffs2/symlink.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/fs.h>
 #include <linux/namei.h>
@@ -47,10 +49,11 @@ static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
          */
 
         if (!p) {
-                printk(KERN_ERR "jffs2_follow_link(): can't find symlink target\n");
+                pr_err("%s(): can't find symlink target\n", __func__);
                 p = ERR_PTR(-EIO);
         }
-        D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->target));
+        jffs2_dbg(1, "%s(): target path is '%s'\n",
+                  __func__, (char *)f->target);
 
         nd_set_link(nd, p);
 
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 30e8f47e8a23..74d9be19df3f 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -11,6 +11,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/mtd/mtd.h>
@@ -91,7 +93,7 @@ static void jffs2_wbuf_dirties_inode(struct jffs2_sb_info *c, uint32_t ino)
 
         new = kmalloc(sizeof(*new), GFP_KERNEL);
         if (!new) {
-                D1(printk(KERN_DEBUG "No memory to allocate inodirty. Fallback to all considered dirty\n"));
+                jffs2_dbg(1, "No memory to allocate inodirty. Fallback to all considered dirty\n");
                 jffs2_clear_wbuf_ino_list(c);
                 c->wbuf_inodes = &inodirty_nomem;
                 return;
@@ -113,19 +115,20 @@ static inline void jffs2_refile_wbuf_blocks(struct jffs2_sb_info *c)
         list_for_each_safe(this, next, &c->erasable_pending_wbuf_list) {
                 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
 
-                D1(printk(KERN_DEBUG "Removing eraseblock at 0x%08x from erasable_pending_wbuf_list...\n", jeb->offset));
+                jffs2_dbg(1, "Removing eraseblock at 0x%08x from erasable_pending_wbuf_list...\n",
+                          jeb->offset);
                 list_del(this);
                 if ((jiffies + (n++)) & 127) {
                         /* Most of the time, we just erase it immediately. Otherwise we
                            spend ages scanning it on mount, etc. */
-                        D1(printk(KERN_DEBUG "...and adding to erase_pending_list\n"));
+                        jffs2_dbg(1, "...and adding to erase_pending_list\n");
                         list_add_tail(&jeb->list, &c->erase_pending_list);
                         c->nr_erasing_blocks++;
                         jffs2_garbage_collect_trigger(c);
                 } else {
                         /* Sometimes, however, we leave it elsewhere so it doesn't get
                            immediately reused, and we spread the load a bit. */
-                        D1(printk(KERN_DEBUG "...and adding to erasable_list\n"));
+                        jffs2_dbg(1, "...and adding to erasable_list\n");
                         list_add_tail(&jeb->list, &c->erasable_list);
                 }
         }
@@ -136,7 +139,7 @@ static inline void jffs2_refile_wbuf_blocks(struct jffs2_sb_info *c)
 
 static void jffs2_block_refile(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, int allow_empty)
 {
-        D1(printk("About to refile bad block at %08x\n", jeb->offset));
+        jffs2_dbg(1, "About to refile bad block at %08x\n", jeb->offset);
 
         /* File the existing block on the bad_used_list.... */
         if (c->nextblock == jeb)
@@ -144,12 +147,14 @@ static void jffs2_block_refile(struct jffs2_sb_info *c, struct jffs2_eraseblock
         else /* Not sure this should ever happen... need more coffee */
                 list_del(&jeb->list);
         if (jeb->first_node) {
-                D1(printk("Refiling block at %08x to bad_used_list\n", jeb->offset));
+                jffs2_dbg(1, "Refiling block at %08x to bad_used_list\n",
+                          jeb->offset);
                 list_add(&jeb->list, &c->bad_used_list);
         } else {
                 BUG_ON(allow_empty == REFILE_NOTEMPTY);
                 /* It has to have had some nodes or we couldn't be here */
-                D1(printk("Refiling block at %08x to erase_pending_list\n", jeb->offset));
+                jffs2_dbg(1, "Refiling block at %08x to erase_pending_list\n",
+                          jeb->offset);
                 list_add(&jeb->list, &c->erase_pending_list);
                 c->nr_erasing_blocks++;
                 jffs2_garbage_collect_trigger(c);
@@ -230,10 +235,12 @@ static int jffs2_verify_write(struct jffs2_sb_info *c, unsigned char *buf,
 
         ret = mtd_read(c->mtd, ofs, c->wbuf_pagesize, &retlen, c->wbuf_verify);
         if (ret && ret != -EUCLEAN && ret != -EBADMSG) {
-                printk(KERN_WARNING "jffs2_verify_write(): Read back of page at %08x failed: %d\n", c->wbuf_ofs, ret);
+                pr_warn("%s(): Read back of page at %08x failed: %d\n",
+                        __func__, c->wbuf_ofs, ret);
                 return ret;
         } else if (retlen != c->wbuf_pagesize) {
-                printk(KERN_WARNING "jffs2_verify_write(): Read back of page at %08x gave short read: %zd not %d.\n", ofs, retlen, c->wbuf_pagesize);
+                pr_warn("%s(): Read back of page at %08x gave short read: %zd not %d\n",
+                        __func__, ofs, retlen, c->wbuf_pagesize);
                 return -EIO;
         }
         if (!memcmp(buf, c->wbuf_verify, c->wbuf_pagesize))
@@ -246,12 +253,12 @@ static int jffs2_verify_write(struct jffs2_sb_info *c, unsigned char *buf,
         else
                 eccstr = "OK or unused";
 
-        printk(KERN_WARNING "Write verify error (ECC %s) at %08x. Wrote:\n",
-               eccstr, c->wbuf_ofs);
+        pr_warn("Write verify error (ECC %s) at %08x. Wrote:\n",
+                eccstr, c->wbuf_ofs);
         print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1,
                        c->wbuf, c->wbuf_pagesize, 0);
 
-        printk(KERN_WARNING "Read back:\n");
+        pr_warn("Read back:\n");
         print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1,
                        c->wbuf_verify, c->wbuf_pagesize, 0);
 
@@ -308,7 +315,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
 
         if (!first_raw) {
                 /* All nodes were obsolete. Nothing to recover. */
-                D1(printk(KERN_DEBUG "No non-obsolete nodes to be recovered. Just filing block bad\n"));
+                jffs2_dbg(1, "No non-obsolete nodes to be recovered. Just filing block bad\n");
                 c->wbuf_len = 0;
                 return;
         }
@@ -331,7 +338,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
 
                 buf = kmalloc(end - start, GFP_KERNEL);
                 if (!buf) {
-                        printk(KERN_CRIT "Malloc failure in wbuf recovery. Data loss ensues.\n");
+                        pr_crit("Malloc failure in wbuf recovery. Data loss ensues.\n");
 
                         goto read_failed;
                 }
@@ -346,7 +353,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
                         ret = 0;
 
                 if (ret || retlen != c->wbuf_ofs - start) {
-                        printk(KERN_CRIT "Old data are already lost in wbuf recovery. Data loss ensues.\n");
+                        pr_crit("Old data are already lost in wbuf recovery. Data loss ensues.\n");
 
                         kfree(buf);
                         buf = NULL;
@@ -380,7 +387,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
         /* ... and get an allocation of space from a shiny new block instead */
         ret = jffs2_reserve_space_gc(c, end-start, &len, JFFS2_SUMMARY_NOSUM_SIZE);
         if (ret) {
-                printk(KERN_WARNING "Failed to allocate space for wbuf recovery. Data loss ensues.\n");
+                pr_warn("Failed to allocate space for wbuf recovery. Data loss ensues.\n");
                 kfree(buf);
                 return;
         }
@@ -390,7 +397,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
 
         ret = jffs2_prealloc_raw_node_refs(c, c->nextblock, nr_refile);
         if (ret) {
-                printk(KERN_WARNING "Failed to allocate node refs for wbuf recovery. Data loss ensues.\n");
+                pr_warn("Failed to allocate node refs for wbuf recovery. Data loss ensues.\n");
                 kfree(buf);
                 return;
         }
@@ -406,13 +413,13 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
                 unsigned char *rewrite_buf = buf?:c->wbuf;
                 uint32_t towrite = (end-start) - ((end-start)%c->wbuf_pagesize);
 
-                D1(printk(KERN_DEBUG "Write 0x%x bytes at 0x%08x in wbuf recover\n",
-                          towrite, ofs));
+                jffs2_dbg(1, "Write 0x%x bytes at 0x%08x in wbuf recover\n",
+                          towrite, ofs);
 
 #ifdef BREAKMEHEADER
                 static int breakme;
                 if (breakme++ == 20) {
-                        printk(KERN_NOTICE "Faking write error at 0x%08x\n", ofs);
+                        pr_notice("Faking write error at 0x%08x\n", ofs);
                         breakme = 0;
                         mtd_write(c->mtd, ofs, towrite, &retlen, brokenbuf);
                         ret = -EIO;
@@ -423,7 +430,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
 
                 if (ret || retlen != towrite || jffs2_verify_write(c, rewrite_buf, ofs)) {
                         /* Argh. We tried. Really we did. */
-                        printk(KERN_CRIT "Recovery of wbuf failed due to a second write error\n");
+                        pr_crit("Recovery of wbuf failed due to a second write error\n");
                         kfree(buf);
 
                         if (retlen)
@@ -431,7 +438,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
 
                         return;
                 }
-                printk(KERN_NOTICE "Recovery of wbuf succeeded to %08x\n", ofs);
+                pr_notice("Recovery of wbuf succeeded to %08x\n", ofs);
 
                 c->wbuf_len = (end - start) - towrite;
                 c->wbuf_ofs = ofs + towrite;
@@ -459,8 +466,8 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
                 struct jffs2_raw_node_ref **adjust_ref = NULL;
                 struct jffs2_inode_info *f = NULL;
 
-                D1(printk(KERN_DEBUG "Refiling block of %08x at %08x(%d) to %08x\n",
-                          rawlen, ref_offset(raw), ref_flags(raw), ofs));
+                jffs2_dbg(1, "Refiling block of %08x at %08x(%d) to %08x\n",
+                          rawlen, ref_offset(raw), ref_flags(raw), ofs);
 
                 ic = jffs2_raw_ref_to_ic(raw);
 
@@ -540,7 +547,8 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
 
         /* Fix up the original jeb now it's on the bad_list */
         if (first_raw == jeb->first_node) {
-                D1(printk(KERN_DEBUG "Failing block at %08x is now empty. Moving to erase_pending_list\n", jeb->offset));
+                jffs2_dbg(1, "Failing block at %08x is now empty. Moving to erase_pending_list\n",
+                          jeb->offset);
                 list_move(&jeb->list, &c->erase_pending_list);
                 c->nr_erasing_blocks++;
                 jffs2_garbage_collect_trigger(c);
@@ -554,7 +562,8 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
 
         spin_unlock(&c->erase_completion_lock);
 
-        D1(printk(KERN_DEBUG "wbuf recovery completed OK. wbuf_ofs 0x%08x, len 0x%x\n", c->wbuf_ofs, c->wbuf_len));
+        jffs2_dbg(1, "wbuf recovery completed OK. wbuf_ofs 0x%08x, len 0x%x\n",
+                  c->wbuf_ofs, c->wbuf_len);
 
 }
 
@@ -579,7 +588,7 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
                 return 0;
 
         if (!mutex_is_locked(&c->alloc_sem)) {
-                printk(KERN_CRIT "jffs2_flush_wbuf() called with alloc_sem not locked!\n");
+                pr_crit("jffs2_flush_wbuf() called with alloc_sem not locked!\n");
                 BUG();
         }
 
@@ -617,7 +626,7 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
 #ifdef BREAKME
         static int breakme;
         if (breakme++ == 20) {
-                printk(KERN_NOTICE "Faking write error at 0x%08x\n", c->wbuf_ofs);
+                pr_notice("Faking write error at 0x%08x\n", c->wbuf_ofs);
                 breakme = 0;
                 mtd_write(c->mtd, c->wbuf_ofs, c->wbuf_pagesize, &retlen,
                           brokenbuf);
@@ -629,11 +638,11 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
                                 &retlen, c->wbuf);
 
         if (ret) {
-                printk(KERN_WARNING "jffs2_flush_wbuf(): Write failed with %d\n", ret);
+                pr_warn("jffs2_flush_wbuf(): Write failed with %d\n", ret);
                 goto wfail;
         } else if (retlen != c->wbuf_pagesize) {
-                printk(KERN_WARNING "jffs2_flush_wbuf(): Write was short: %zd instead of %d\n",
-                       retlen, c->wbuf_pagesize);
+                pr_warn("jffs2_flush_wbuf(): Write was short: %zd instead of %d\n",
+                        retlen, c->wbuf_pagesize);
                 ret = -EIO;
                 goto wfail;
         } else if ((ret = jffs2_verify_write(c, c->wbuf, c->wbuf_ofs))) {
@@ -647,17 +656,18 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
         if (pad) {
                 uint32_t waste = c->wbuf_pagesize - c->wbuf_len;
 
-                D1(printk(KERN_DEBUG "jffs2_flush_wbuf() adjusting free_size of %sblock at %08x\n",
-                          (wbuf_jeb==c->nextblock)?"next":"", wbuf_jeb->offset));
+                jffs2_dbg(1, "jffs2_flush_wbuf() adjusting free_size of %sblock at %08x\n",
+                          (wbuf_jeb == c->nextblock) ? "next" : "",
+                          wbuf_jeb->offset);
 
                 /* wbuf_pagesize - wbuf_len is the amount of space that's to be
                    padded. If there is less free space in the block than that,
                    something screwed up */
                 if (wbuf_jeb->free_size < waste) {
-                        printk(KERN_CRIT "jffs2_flush_wbuf(): Accounting error. wbuf at 0x%08x has 0x%03x bytes, 0x%03x left.\n",
-                               c->wbuf_ofs, c->wbuf_len, waste);
-                        printk(KERN_CRIT "jffs2_flush_wbuf(): But free_size for block at 0x%08x is only 0x%08x\n",
-                               wbuf_jeb->offset, wbuf_jeb->free_size);
+                        pr_crit("jffs2_flush_wbuf(): Accounting error. wbuf at 0x%08x has 0x%03x bytes, 0x%03x left.\n",
+                                c->wbuf_ofs, c->wbuf_len, waste);
+                        pr_crit("jffs2_flush_wbuf(): But free_size for block at 0x%08x is only 0x%08x\n",
+                                wbuf_jeb->offset, wbuf_jeb->free_size);
                         BUG();
                 }
 
@@ -694,14 +704,14 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
         uint32_t old_wbuf_len;
         int ret = 0;
 
-        D1(printk(KERN_DEBUG "jffs2_flush_wbuf_gc() called for ino #%u...\n", ino));
+        jffs2_dbg(1, "jffs2_flush_wbuf_gc() called for ino #%u...\n", ino);
 
         if (!c->wbuf)
                 return 0;
 
         mutex_lock(&c->alloc_sem);
         if (!jffs2_wbuf_pending_for_ino(c, ino)) {
-                D1(printk(KERN_DEBUG "Ino #%d not pending in wbuf. Returning\n", ino));
+                jffs2_dbg(1, "Ino #%d not pending in wbuf. Returning\n", ino);
                 mutex_unlock(&c->alloc_sem);
                 return 0;
         }
@@ -711,7 +721,8 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
 
         if (c->unchecked_size) {
                 /* GC won't make any progress for a while */
-                D1(printk(KERN_DEBUG "jffs2_flush_wbuf_gc() padding. Not finished checking\n"));
+                jffs2_dbg(1, "%s(): padding. Not finished checking\n",
+                          __func__);
                 down_write(&c->wbuf_sem);
                 ret = __jffs2_flush_wbuf(c, PAD_ACCOUNTING);
                 /* retry flushing wbuf in case jffs2_wbuf_recover
@@ -724,7 +735,7 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
 
                 mutex_unlock(&c->alloc_sem);
 
-                D1(printk(KERN_DEBUG "jffs2_flush_wbuf_gc() calls gc pass\n"));
+                jffs2_dbg(1, "%s(): calls gc pass\n", __func__);
 
                 ret = jffs2_garbage_collect_pass(c);
                 if (ret) {
@@ -742,7 +753,7 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
                 mutex_lock(&c->alloc_sem);
         }
 
-        D1(printk(KERN_DEBUG "jffs2_flush_wbuf_gc() ends...\n"));
+        jffs2_dbg(1, "%s(): ends...\n", __func__);
 
         mutex_unlock(&c->alloc_sem);
         return ret;
@@ -811,9 +822,8 @@ int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *invecs,
         if (SECTOR_ADDR(to) != SECTOR_ADDR(c->wbuf_ofs)) {
                 /* It's a write to a new block */
                 if (c->wbuf_len) {
-                        D1(printk(KERN_DEBUG "jffs2_flash_writev() to 0x%lx "
-                                  "causes flush of wbuf at 0x%08x\n",
-                                  (unsigned long)to, c->wbuf_ofs));
+                        jffs2_dbg(1, "%s(): to 0x%lx causes flush of wbuf at 0x%08x\n",
+                                  __func__, (unsigned long)to, c->wbuf_ofs);
                         ret = __jffs2_flush_wbuf(c, PAD_NOACCOUNT);
                         if (ret)
                                 goto outerr;
@@ -825,11 +835,11 @@ int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *invecs,
 
         if (to != PAD(c->wbuf_ofs + c->wbuf_len)) {
                 /* We're not writing immediately after the writebuffer. Bad. */
-                printk(KERN_CRIT "jffs2_flash_writev(): Non-contiguous write "
-                       "to %08lx\n", (unsigned long)to);
+                pr_crit("%s(): Non-contiguous write to %08lx\n",
+                        __func__, (unsigned long)to);
                 if (c->wbuf_len)
-                        printk(KERN_CRIT "wbuf was previously %08x-%08x\n",
-                               c->wbuf_ofs, c->wbuf_ofs+c->wbuf_len);
+                        pr_crit("wbuf was previously %08x-%08x\n",
+                                c->wbuf_ofs, c->wbuf_ofs + c->wbuf_len);
                 BUG();
         }
 
@@ -957,8 +967,8 @@ int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *re
 
         if ( (ret == -EBADMSG || ret == -EUCLEAN) && (*retlen == len) ) {
                 if (ret == -EBADMSG)
-                        printk(KERN_WARNING "mtd->read(0x%zx bytes from 0x%llx)"
-                               " returned ECC error\n", len, ofs);
+                        pr_warn("mtd->read(0x%zx bytes from 0x%llx) returned ECC error\n",
+                                len, ofs);
                 /*
                  * We have the raw data without ECC correction in the buffer,
                  * maybe we are lucky and all data or parts are correct. We
@@ -1034,9 +1044,8 @@ int jffs2_check_oob_empty(struct jffs2_sb_info *c,
 
         ret = mtd_read_oob(c->mtd, jeb->offset, &ops);
         if (ret || ops.oobretlen != ops.ooblen) {
-                printk(KERN_ERR "cannot read OOB for EB at %08x, requested %zd"
-                                " bytes, read %zd bytes, error %d\n",
-                                jeb->offset, ops.ooblen, ops.oobretlen, ret);
+                pr_err("cannot read OOB for EB at %08x, requested %zd bytes, read %zd bytes, error %d\n",
+                       jeb->offset, ops.ooblen, ops.oobretlen, ret);
                 if (!ret)
                         ret = -EIO;
                 return ret;
@@ -1048,8 +1057,8 @@ int jffs2_check_oob_empty(struct jffs2_sb_info *c,
                         continue;
 
                 if (ops.oobbuf[i] != 0xFF) {
-                        D2(printk(KERN_DEBUG "Found %02x at %x in OOB for "
-                                  "%08x\n", ops.oobbuf[i], i, jeb->offset));
+                        jffs2_dbg(2, "Found %02x at %x in OOB for "
+                                  "%08x\n", ops.oobbuf[i], i, jeb->offset);
                         return 1;
                 }
         }
@@ -1077,9 +1086,8 @@ int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c,
 
         ret = mtd_read_oob(c->mtd, jeb->offset, &ops);
         if (ret || ops.oobretlen != ops.ooblen) {
-                printk(KERN_ERR "cannot read OOB for EB at %08x, requested %zd"
-                                " bytes, read %zd bytes, error %d\n",
-                                jeb->offset, ops.ooblen, ops.oobretlen, ret);
+                pr_err("cannot read OOB for EB at %08x, requested %zd bytes, read %zd bytes, error %d\n",
+                       jeb->offset, ops.ooblen, ops.oobretlen, ret);
                 if (!ret)
                         ret = -EIO;
                 return ret;
@@ -1103,9 +1111,8 @@ int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c,
 
         ret = mtd_write_oob(c->mtd, jeb->offset, &ops);
         if (ret || ops.oobretlen != ops.ooblen) {
-                printk(KERN_ERR "cannot write OOB for EB at %08x, requested %zd"
-                                " bytes, read %zd bytes, error %d\n",
-                                jeb->offset, ops.ooblen, ops.oobretlen, ret);
+                pr_err("cannot write OOB for EB at %08x, requested %zd bytes, read %zd bytes, error %d\n",
+                       jeb->offset, ops.ooblen, ops.oobretlen, ret);
                 if (!ret)
                         ret = -EIO;
                 return ret;
@@ -1130,11 +1137,12 @@ int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *
         if( ++jeb->bad_count < MAX_ERASE_FAILURES)
                 return 0;
 
-        printk(KERN_WARNING "JFFS2: marking eraseblock at %08x\n as bad", bad_offset);
+        pr_warn("marking eraseblock at %08x as bad\n", bad_offset);
         ret = mtd_block_markbad(c->mtd, bad_offset);
 
         if (ret) {
-                D1(printk(KERN_WARNING "jffs2_write_nand_badblock(): Write failed for block at %08x: error %d\n", jeb->offset, ret));
+                jffs2_dbg(1, "%s(): Write failed for block at %08x: error %d\n",
+                          __func__, jeb->offset, ret);
                 return ret;
         }
         return 1;
@@ -1151,11 +1159,11 @@ int jffs2_nand_flash_setup(struct jffs2_sb_info *c)
         c->cleanmarker_size = 0;
 
         if (!oinfo || oinfo->oobavail == 0) {
-                printk(KERN_ERR "inconsistent device description\n");
+                pr_err("inconsistent device description\n");
                 return -EINVAL;
         }
 
-        D1(printk(KERN_DEBUG "JFFS2 using OOB on NAND\n"));
+        jffs2_dbg(1, "using OOB on NAND\n");
 
         c->oobavail = oinfo->oobavail;
 
@@ -1222,7 +1230,7 @@ int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
 
         if ((c->flash_size % c->sector_size) != 0) {
                 c->flash_size = (c->flash_size / c->sector_size) * c->sector_size;
-                printk(KERN_WARNING "JFFS2 flash size adjusted to %dKiB\n", c->flash_size);
+                pr_warn("flash size adjusted to %dKiB\n", c->flash_size);
         };
 
         c->wbuf_ofs = 0xFFFFFFFF;
@@ -1239,7 +1247,8 @@ int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
         }
 #endif
 
-        printk(KERN_INFO "JFFS2 write-buffering enabled buffer (%d) erasesize (%d)\n", c->wbuf_pagesize, c->sector_size);
+        pr_info("write-buffering enabled buffer (%d) erasesize (%d)\n",
+                c->wbuf_pagesize, c->sector_size);
 
         return 0;
 }
@@ -1297,7 +1306,8 @@ int jffs2_ubivol_setup(struct jffs2_sb_info *c) {
         if (!c->wbuf)
                 return -ENOMEM;
 
-        printk(KERN_INFO "JFFS2 write-buffering enabled buffer (%d) erasesize (%d)\n", c->wbuf_pagesize, c->sector_size);
+        pr_info("write-buffering enabled buffer (%d) erasesize (%d)\n",
+                c->wbuf_pagesize, c->sector_size);
 
         return 0;
 }
diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c
index 30d175b6d290..b634de4c8101 100644
--- a/fs/jffs2/write.c
+++ b/fs/jffs2/write.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/fs.h>
 #include <linux/crc32.h>
@@ -36,7 +38,7 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
         f->inocache->state = INO_STATE_PRESENT;
 
         jffs2_add_ino_cache(c, f->inocache);
-        D1(printk(KERN_DEBUG "jffs2_do_new_inode(): Assigned ino# %d\n", f->inocache->ino));
+        jffs2_dbg(1, "%s(): Assigned ino# %d\n", __func__, f->inocache->ino);
         ri->ino = cpu_to_je32(f->inocache->ino);
 
         ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
@@ -68,7 +70,7 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
         unsigned long cnt = 2;
 
         D1(if(je32_to_cpu(ri->hdr_crc) != crc32(0, ri, sizeof(struct jffs2_unknown_node)-4)) {
-                printk(KERN_CRIT "Eep. CRC not correct in jffs2_write_dnode()\n");
+                pr_crit("Eep. CRC not correct in jffs2_write_dnode()\n");
                 BUG();
         }
            );
@@ -78,7 +80,9 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
         vecs[1].iov_len = datalen;
 
         if (je32_to_cpu(ri->totlen) != sizeof(*ri) + datalen) {
-                printk(KERN_WARNING "jffs2_write_dnode: ri->totlen (0x%08x) != sizeof(*ri) (0x%08zx) + datalen (0x%08x)\n", je32_to_cpu(ri->totlen), sizeof(*ri), datalen);
+                pr_warn("%s(): ri->totlen (0x%08x) != sizeof(*ri) (0x%08zx) + datalen (0x%08x)\n",
+                        __func__, je32_to_cpu(ri->totlen),
+                        sizeof(*ri), datalen);
         }
 
         fn = jffs2_alloc_full_dnode();
@@ -95,9 +99,9 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 
         if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(ri->version) < f->highest_version)) {
                 BUG_ON(!retried);
-                D1(printk(KERN_DEBUG "jffs2_write_dnode : dnode_version %d, "
-                                "highest version %d -> updating dnode\n",
-                                je32_to_cpu(ri->version), f->highest_version));
+                jffs2_dbg(1, "%s(): dnode_version %d, highest version %d -> updating dnode\n",
+                          __func__,
+                          je32_to_cpu(ri->version), f->highest_version);
                 ri->version = cpu_to_je32(++f->highest_version);
                 ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
         }
@@ -106,8 +110,8 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
                                  (alloc_mode==ALLOC_GC)?0:f->inocache->ino);
 
         if (ret || (retlen != sizeof(*ri) + datalen)) {
-                printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
-                       sizeof(*ri)+datalen, flash_ofs, ret, retlen);
+                pr_notice("Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
+                          sizeof(*ri) + datalen, flash_ofs, ret, retlen);
 
                 /* Mark the space as dirtied */
                 if (retlen) {
@@ -118,7 +122,8 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
                            this node */
                         jffs2_add_physical_node_ref(c, flash_ofs | REF_OBSOLETE, PAD(sizeof(*ri)+datalen), NULL);
                 } else {
-                        printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", flash_ofs);
+                        pr_notice("Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n",
+                                  flash_ofs);
                 }
                 if (!retried && alloc_mode != ALLOC_NORETRY) {
                         /* Try to reallocate space and retry */
@@ -127,7 +132,7 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 
                         retried = 1;
 
-                        D1(printk(KERN_DEBUG "Retrying failed write.\n"));
+                        jffs2_dbg(1, "Retrying failed write.\n");
 
                         jffs2_dbg_acct_sanity_check(c,jeb);
                         jffs2_dbg_acct_paranoia_check(c, jeb);
@@ -147,14 +152,16 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 
                         if (!ret) {
                                 flash_ofs = write_ofs(c);
-                                D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs));
+                                jffs2_dbg(1, "Allocated space at 0x%08x to retry failed write.\n",
+                                          flash_ofs);
 
                                 jffs2_dbg_acct_sanity_check(c,jeb);
                                 jffs2_dbg_acct_paranoia_check(c, jeb);
 
                                 goto retry;
                         }
-                        D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret));
+                        jffs2_dbg(1, "Failed to allocate space to retry failed write: %d!\n",
+                                  ret);
                 }
                 /* Release the full_dnode which is now useless, and return */
                 jffs2_free_full_dnode(fn);
@@ -183,10 +190,10 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
         fn->size = je32_to_cpu(ri->dsize);
         fn->frags = 0;
 
-        D1(printk(KERN_DEBUG "jffs2_write_dnode wrote node at 0x%08x(%d) with dsize 0x%x, csize 0x%x, node_crc 0x%08x, data_crc 0x%08x, totlen 0x%08x\n",
+        jffs2_dbg(1, "jffs2_write_dnode wrote node at 0x%08x(%d) with dsize 0x%x, csize 0x%x, node_crc 0x%08x, data_crc 0x%08x, totlen 0x%08x\n",
                   flash_ofs & ~3, flash_ofs & 3, je32_to_cpu(ri->dsize),
                   je32_to_cpu(ri->csize), je32_to_cpu(ri->node_crc),
-                  je32_to_cpu(ri->data_crc), je32_to_cpu(ri->totlen)));
+                  je32_to_cpu(ri->data_crc), je32_to_cpu(ri->totlen));
 
         if (retried) {
                 jffs2_dbg_acct_sanity_check(c,NULL);
@@ -206,22 +213,23 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
         int retried = 0;
         int ret;
 
-        D1(printk(KERN_DEBUG "jffs2_write_dirent(ino #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x)\n",
+        jffs2_dbg(1, "%s(ino #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x)\n",
+                  __func__,
                   je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino),
-                  je32_to_cpu(rd->name_crc)));
+                  je32_to_cpu(rd->name_crc));
 
         D1(if(je32_to_cpu(rd->hdr_crc) != crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)) {
-                printk(KERN_CRIT "Eep. CRC not correct in jffs2_write_dirent()\n");
+                pr_crit("Eep. CRC not correct in jffs2_write_dirent()\n");
                 BUG();
            });
 
         if (strnlen(name, namelen) != namelen) {
                 /* This should never happen, but seems to have done on at least one
                    occasion: https://dev.laptop.org/ticket/4184 */
-                printk(KERN_CRIT "Error in jffs2_write_dirent() -- name contains zero bytes!\n");
-                printk(KERN_CRIT "Directory inode #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x\n",
-                       je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino),
-                       je32_to_cpu(rd->name_crc));
+                pr_crit("Error in jffs2_write_dirent() -- name contains zero bytes!\n");
+                pr_crit("Directory inode #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x\n",
+                        je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino),
+                        je32_to_cpu(rd->name_crc));
                 WARN_ON(1);
                 return ERR_PTR(-EIO);
         }
@@ -249,9 +257,9 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 
         if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(rd->version) < f->highest_version)) {
                 BUG_ON(!retried);
-                D1(printk(KERN_DEBUG "jffs2_write_dirent : dirent_version %d, "
-                                     "highest version %d -> updating dirent\n",
-                                     je32_to_cpu(rd->version), f->highest_version));
+                jffs2_dbg(1, "%s(): dirent_version %d, highest version %d -> updating dirent\n",
+                          __func__,
+                          je32_to_cpu(rd->version), f->highest_version);
                 rd->version = cpu_to_je32(++f->highest_version);
                 fd->version = je32_to_cpu(rd->version);
                 rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
@@ -260,13 +268,14 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
         ret = jffs2_flash_writev(c, vecs, 2, flash_ofs, &retlen,
                                  (alloc_mode==ALLOC_GC)?0:je32_to_cpu(rd->pino));
         if (ret || (retlen != sizeof(*rd) + namelen)) {
-                printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
-                               sizeof(*rd)+namelen, flash_ofs, ret, retlen);
+                pr_notice("Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
+                          sizeof(*rd) + namelen, flash_ofs, ret, retlen);
                 /* Mark the space as dirtied */
                 if (retlen) {
                         jffs2_add_physical_node_ref(c, flash_ofs | REF_OBSOLETE, PAD(sizeof(*rd)+namelen), NULL);
                 } else {
-                        printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", flash_ofs);
+                        pr_notice("Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n",
+                                  flash_ofs);
                 }
                 if (!retried) {
                         /* Try to reallocate space and retry */
@@ -275,7 +284,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 
                         retried = 1;
 
-                        D1(printk(KERN_DEBUG "Retrying failed write.\n"));
+                        jffs2_dbg(1, "Retrying failed write.\n");
 
                         jffs2_dbg_acct_sanity_check(c,jeb);
                         jffs2_dbg_acct_paranoia_check(c, jeb);
@@ -295,12 +304,14 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 
                         if (!ret) {
                                 flash_ofs = write_ofs(c);
-                                D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs));
+                                jffs2_dbg(1, "Allocated space at 0x%08x to retry failed write\n",
+                                          flash_ofs);
                                 jffs2_dbg_acct_sanity_check(c,jeb);
                                 jffs2_dbg_acct_paranoia_check(c, jeb);
                                 goto retry;
                         }
-                        D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret));
+                        jffs2_dbg(1, "Failed to allocate space to retry failed write: %d!\n",
+                                  ret);
                 }
                 /* Release the full_dnode which is now useless, and return */
                 jffs2_free_full_dirent(fd);
@@ -333,8 +344,8 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
         int ret = 0;
         uint32_t writtenlen = 0;
 
-        D1(printk(KERN_DEBUG "jffs2_write_inode_range(): Ino #%u, ofs 0x%x, len 0x%x\n",
-                  f->inocache->ino, offset, writelen));
+        jffs2_dbg(1, "%s(): Ino #%u, ofs 0x%x, len 0x%x\n",
+                  __func__, f->inocache->ino, offset, writelen);
 
         while(writelen) {
                 struct jffs2_full_dnode *fn;
@@ -345,12 +356,13 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                 int retried = 0;
 
         retry:
-                D2(printk(KERN_DEBUG "jffs2_commit_write() loop: 0x%x to write to 0x%x\n", writelen, offset));
+                jffs2_dbg(2, "jffs2_commit_write() loop: 0x%x to write to 0x%x\n",
+                          writelen, offset);
 
                 ret = jffs2_reserve_space(c, sizeof(*ri) + JFFS2_MIN_DATA_LEN,
                                         &alloclen, ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
                 if (ret) {
-                        D1(printk(KERN_DEBUG "jffs2_reserve_space returned %d\n", ret));
+                        jffs2_dbg(1, "jffs2_reserve_space returned %d\n", ret);
                         break;
                 }
                 mutex_lock(&f->sem);
@@ -386,7 +398,7 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                         if (!retried) {
                                 /* Write error to be retried */
                                 retried = 1;
-                                D1(printk(KERN_DEBUG "Retrying node write in jffs2_write_inode_range()\n"));
+                                jffs2_dbg(1, "Retrying node write in jffs2_write_inode_range()\n");
                                 goto retry;
                         }
                         break;
@@ -399,7 +411,8 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                 }
                 if (ret) {
                         /* Eep */
-                        D1(printk(KERN_DEBUG "Eep. add_full_dnode_to_inode() failed in commit_write, returned %d\n", ret));
+                        jffs2_dbg(1, "Eep. add_full_dnode_to_inode() failed in commit_write, returned %d\n",
+                                  ret);
                         jffs2_mark_node_obsolete(c, fn->raw);
                         jffs2_free_full_dnode(fn);
 
@@ -410,11 +423,11 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                 mutex_unlock(&f->sem);
                 jffs2_complete_reservation(c);
                 if (!datalen) {
-                        printk(KERN_WARNING "Eep. We didn't actually write any data in jffs2_write_inode_range()\n");
+                        pr_warn("Eep. We didn't actually write any data in jffs2_write_inode_range()\n");
                         ret = -EIO;
                         break;
                 }
-                D1(printk(KERN_DEBUG "increasing writtenlen by %d\n", datalen));
+                jffs2_dbg(1, "increasing writtenlen by %d\n", datalen);
                 writtenlen += datalen;
                 offset += datalen;
                 writelen -= datalen;
@@ -439,7 +452,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
          */
         ret = jffs2_reserve_space(c, sizeof(*ri), &alloclen, ALLOC_NORMAL,
                                 JFFS2_SUMMARY_INODE_SIZE);
-        D1(printk(KERN_DEBUG "jffs2_do_create(): reserved 0x%x bytes\n", alloclen));
+        jffs2_dbg(1, "%s(): reserved 0x%x bytes\n", __func__, alloclen);
         if (ret)
                 return ret;
 
@@ -450,11 +463,11 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 
         fn = jffs2_write_dnode(c, f, ri, NULL, 0, ALLOC_NORMAL);
 
-        D1(printk(KERN_DEBUG "jffs2_do_create created file with mode 0x%x\n",
-                  jemode_to_cpu(ri->mode)));
+        jffs2_dbg(1, "jffs2_do_create created file with mode 0x%x\n",
+                  jemode_to_cpu(ri->mode));
 
         if (IS_ERR(fn)) {
-                D1(printk(KERN_DEBUG "jffs2_write_dnode() failed\n"));
+                jffs2_dbg(1, "jffs2_write_dnode() failed\n");
                 /* Eeek. Wave bye bye */
                 mutex_unlock(&f->sem);
                 jffs2_complete_reservation(c);
@@ -480,7 +493,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 
         if (ret) {
                 /* Eep. */
-                D1(printk(KERN_DEBUG "jffs2_reserve_space() for dirent failed\n"));
+                jffs2_dbg(1, "jffs2_reserve_space() for dirent failed\n");
                 return ret;
         }
 
@@ -597,8 +610,8 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
                             !memcmp(fd->name, name, namelen) &&
                             !fd->name[namelen]) {
 
-                                D1(printk(KERN_DEBUG "Marking old dirent node (ino #%u) @%08x obsolete\n",
-                                          fd->ino, ref_offset(fd->raw)));
+                                jffs2_dbg(1, "Marking old dirent node (ino #%u) @%08x obsolete\n",
+                                          fd->ino, ref_offset(fd->raw));
                                 jffs2_mark_node_obsolete(c, fd->raw);
                                 /* We don't want to remove it from the list immediately,
                                    because that screws up getdents()/seek() semantics even
@@ -627,11 +640,13 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
                                 dead_f->dents = fd->next;
 
                                 if (fd->ino) {
-                                        printk(KERN_WARNING "Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
-                                               dead_f->inocache->ino, fd->name, fd->ino);
+                                        pr_warn("Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
+                                                dead_f->inocache->ino,
+                                                fd->name, fd->ino);
                                 } else {
-                                        D1(printk(KERN_DEBUG "Removing deletion dirent for \"%s\" from dir ino #%u\n",
-                                                fd->name, dead_f->inocache->ino));
+                                        jffs2_dbg(1, "Removing deletion dirent for \"%s\" from dir ino #%u\n",
+                                                  fd->name,
+                                                  dead_f->inocache->ino);
                                 }
                                 if (fd->raw)
                                         jffs2_mark_node_obsolete(c, fd->raw);
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index 3e93cdd19005..b55b803eddcb 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -9,6 +9,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/fs.h>
diff --git a/fs/romfs/storage.c b/fs/romfs/storage.c
index 71e2b4d50a0a..f86f51f99ace 100644
--- a/fs/romfs/storage.c
+++ b/fs/romfs/storage.c
@@ -19,7 +19,7 @@
 #endif
 
 #ifdef CONFIG_ROMFS_ON_MTD
-#define ROMFS_MTD_READ(sb, ...) ((sb)->s_mtd->read((sb)->s_mtd, ##__VA_ARGS__))
+#define ROMFS_MTD_READ(sb, ...) mtd_read((sb)->s_mtd, ##__VA_ARGS__)
 
 /*
  * read data from an romfs image on an MTD device
diff --git a/arch/arm/mach-mxs/include/mach/dma.h b/include/linux/fsl/mxs-dma.h
index 203d7c4a3e11..203d7c4a3e11 100644
--- a/arch/arm/mach-mxs/include/mach/dma.h
+++ b/include/linux/fsl/mxs-dma.h
diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h
index c4eec228eef9..650ef352f045 100644
--- a/include/linux/mtd/bbm.h
+++ b/include/linux/mtd/bbm.h
@@ -112,6 +112,11 @@ struct nand_bbt_descr {
 #define NAND_BBT_USE_FLASH      0x00020000
 /* Do not store flash based bad block table in OOB area; store it in-band */
 #define NAND_BBT_NO_OOB         0x00040000
+/*
+ * Do not write new bad block markers to OOB; useful, e.g., when ECC covers
+ * entire spare area. Must be used with NAND_BBT_USE_FLASH.
+ */
+#define NAND_BBT_NO_OOB_BBM     0x00080000
 
 /*
  * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr
diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h
index 1bbd9f289245..ed270bd2e4df 100644
--- a/include/linux/mtd/blktrans.h
+++ b/include/linux/mtd/blktrans.h
@@ -47,6 +47,7 @@ struct mtd_blktrans_dev {
         struct request_queue *rq;
         spinlock_t queue_lock;
         void *priv;
+        fmode_t file_mode;
 };
 
 struct mtd_blktrans_ops {
diff --git a/include/linux/mtd/fsmc.h b/include/linux/mtd/fsmc.h
index 6987995ad3cf..b20029221fb1 100644
--- a/include/linux/mtd/fsmc.h
+++ b/include/linux/mtd/fsmc.h
@@ -26,95 +26,83 @@
 #define FSMC_NAND_BW8           1
 #define FSMC_NAND_BW16          2
 
-/*
- * The placement of the Command Latch Enable (CLE) and
- * Address Latch Enable (ALE) is twisted around in the
- * SPEAR310 implementation.
- */
-#if defined(CONFIG_MACH_SPEAR310)
-#define PLAT_NAND_CLE           (1 << 17)
-#define PLAT_NAND_ALE           (1 << 16)
-#else
-#define PLAT_NAND_CLE           (1 << 16)
-#define PLAT_NAND_ALE           (1 << 17)
-#endif
-
 #define FSMC_MAX_NOR_BANKS      4
 #define FSMC_MAX_NAND_BANKS     4
 
 #define FSMC_FLASH_WIDTH8       1
 #define FSMC_FLASH_WIDTH16      2
 
-struct fsmc_nor_bank_regs {
-        uint32_t ctrl;
-        uint32_t ctrl_tim;
-};
-
-/* ctrl register definitions */
-#define BANK_ENABLE             (1 << 0)
-#define MUXED                   (1 << 1)
-#define NOR_DEV                 (2 << 2)
-#define WIDTH_8                 (0 << 4)
-#define WIDTH_16                (1 << 4)
-#define RSTPWRDWN               (1 << 6)
-#define WPROT                   (1 << 7)
-#define WRT_ENABLE              (1 << 12)
-#define WAIT_ENB                (1 << 13)
-
-/* ctrl_tim register definitions */
-
-struct fsmc_nand_bank_regs {
-        uint32_t pc;
-        uint32_t sts;
-        uint32_t comm;
-        uint32_t attrib;
-        uint32_t ioata;
-        uint32_t ecc1;
-        uint32_t ecc2;
-        uint32_t ecc3;
-};
-
+/* fsmc controller registers for NOR flash */
+#define CTRL                    0x0
+        /* ctrl register definitions */
+        #define BANK_ENABLE             (1 << 0)
+        #define MUXED                   (1 << 1)
+        #define NOR_DEV                 (2 << 2)
+        #define WIDTH_8                 (0 << 4)
+        #define WIDTH_16                (1 << 4)
+        #define RSTPWRDWN               (1 << 6)
+        #define WPROT                   (1 << 7)
+        #define WRT_ENABLE              (1 << 12)
+        #define WAIT_ENB                (1 << 13)
+
+#define CTRL_TIM                0x4
+        /* ctrl_tim register definitions */
+
+#define FSMC_NOR_BANK_SZ        0x8
 #define FSMC_NOR_REG_SIZE       0x40
 
-struct fsmc_regs {
-        struct fsmc_nor_bank_regs nor_bank_regs[FSMC_MAX_NOR_BANKS];
-        uint8_t reserved_1[0x40 - 0x20];
-        struct fsmc_nand_bank_regs bank_regs[FSMC_MAX_NAND_BANKS];
-        uint8_t reserved_2[0xfe0 - 0xc0];
-        uint32_t peripid0;                      /* 0xfe0 */
-        uint32_t peripid1;                      /* 0xfe4 */
-        uint32_t peripid2;                      /* 0xfe8 */
-        uint32_t peripid3;                      /* 0xfec */
-        uint32_t pcellid0;                      /* 0xff0 */
-        uint32_t pcellid1;                      /* 0xff4 */
-        uint32_t pcellid2;                      /* 0xff8 */
-        uint32_t pcellid3;                      /* 0xffc */
-};
+#define FSMC_NOR_REG(base, bank, reg)           (base + \
+                                                FSMC_NOR_BANK_SZ * (bank) + \
+                                                reg)
+
+/* fsmc controller registers for NAND flash */
+#define PC                      0x00
+        /* pc register definitions */
+        #define FSMC_RESET              (1 << 0)
+        #define FSMC_WAITON             (1 << 1)
+        #define FSMC_ENABLE             (1 << 2)
+        #define FSMC_DEVTYPE_NAND       (1 << 3)
+        #define FSMC_DEVWID_8           (0 << 4)
+        #define FSMC_DEVWID_16          (1 << 4)
+        #define FSMC_ECCEN              (1 << 6)
+        #define FSMC_ECCPLEN_512        (0 << 7)
+        #define FSMC_ECCPLEN_256        (1 << 7)
+        #define FSMC_TCLR_1             (1)
+        #define FSMC_TCLR_SHIFT         (9)
+        #define FSMC_TCLR_MASK          (0xF)
+        #define FSMC_TAR_1              (1)
+        #define FSMC_TAR_SHIFT          (13)
+        #define FSMC_TAR_MASK           (0xF)
+#define STS                     0x04
+        /* sts register definitions */
+        #define FSMC_CODE_RDY           (1 << 15)
+#define COMM                    0x08
+        /* comm register definitions */
+        #define FSMC_TSET_0             0
+        #define FSMC_TSET_SHIFT         0
+        #define FSMC_TSET_MASK          0xFF
+        #define FSMC_TWAIT_6            6
+        #define FSMC_TWAIT_SHIFT        8
+        #define FSMC_TWAIT_MASK         0xFF
+        #define FSMC_THOLD_4            4
+        #define FSMC_THOLD_SHIFT        16
+        #define FSMC_THOLD_MASK         0xFF
+        #define FSMC_THIZ_1             1
+        #define FSMC_THIZ_SHIFT         24
+        #define FSMC_THIZ_MASK          0xFF
+#define ATTRIB                  0x0C
+#define IOATA                   0x10
+#define ECC1                    0x14
+#define ECC2                    0x18
+#define ECC3                    0x1C
+#define FSMC_NAND_BANK_SZ       0x20
+
+#define FSMC_NAND_REG(base, bank, reg)          (base + FSMC_NOR_REG_SIZE + \
+                                                (FSMC_NAND_BANK_SZ * (bank)) + \
+                                                reg)
 
 #define FSMC_BUSY_WAIT_TIMEOUT  (1 * HZ)
 
-/* pc register definitions */
-#define FSMC_RESET              (1 << 0)
-#define FSMC_WAITON             (1 << 1)
-#define FSMC_ENABLE             (1 << 2)
-#define FSMC_DEVTYPE_NAND       (1 << 3)
-#define FSMC_DEVWID_8           (0 << 4)
-#define FSMC_DEVWID_16          (1 << 4)
-#define FSMC_ECCEN              (1 << 6)
-#define FSMC_ECCPLEN_512        (0 << 7)
-#define FSMC_ECCPLEN_256        (1 << 7)
-#define FSMC_TCLR_1             (1 << 9)
-#define FSMC_TAR_1              (1 << 13)
-
-/* sts register definitions */
-#define FSMC_CODE_RDY           (1 << 15)
-
-/* comm register definitions */
-#define FSMC_TSET_0             (0 << 0)
-#define FSMC_TWAIT_6            (6 << 8)
-#define FSMC_THOLD_4            (4 << 16)
-#define FSMC_THIZ_1             (1 << 24)
-
 /*
  * There are 13 bytes of ecc for every 512 byte block in FSMC version 8
  * and it has to be read consecutively and immediately after the 512
@@ -133,6 +121,20 @@ struct fsmc_eccplace {
         struct fsmc_nand_eccplace eccplace[MAX_ECCPLACE_ENTRIES];
 };
 
+struct fsmc_nand_timings {
+        uint8_t tclr;
+        uint8_t tar;
+        uint8_t thiz;
+        uint8_t thold;
+        uint8_t twait;
+        uint8_t tset;
+};
+
+enum access_mode {
+        USE_DMA_ACCESS = 1,
+        USE_WORD_ACCESS,
+};
+
 /**
  * fsmc_nand_platform_data - platform specific NAND controller config
  * @partitions: partition table for the platform, use a default fallback
@@ -146,12 +148,23 @@ struct fsmc_eccplace {
  * this may be set to NULL
  */
 struct fsmc_nand_platform_data {
+        struct fsmc_nand_timings *nand_timings;
         struct mtd_partition    *partitions;
         unsigned int            nr_partitions;
         unsigned int            options;
         unsigned int            width;
         unsigned int            bank;
+
+        /* CLE, ALE offsets */
+        unsigned int            cle_off;
+        unsigned int            ale_off;
+        enum access_mode        mode;
+
         void                    (*select_bank)(uint32_t bank, uint32_t busw);
+
+        /* priv structures for dma accesses */
+        void                    *read_dma_priv;
+        void                    *write_dma_priv;
 };
 
 extern int __init fsmc_nor_init(struct platform_device *pdev,
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index d43dc25af82e..cf5ea8cdcf8e 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -164,6 +164,9 @@ struct mtd_info {
         /* ECC layout structure pointer - read only! */
         struct nand_ecclayout *ecclayout;
 
+        /* max number of correctible bit errors per writesize */
+        unsigned int ecc_strength;
+
         /* Data for variable erase regions. If numeraseregions is zero,
          * it means that the whole device has erasesize as given above.
          */
@@ -174,52 +177,52 @@ struct mtd_info {
          * Do not call via these pointers, use corresponding mtd_*()
          * wrappers instead.
          */
-        int (*erase) (struct mtd_info *mtd, struct erase_info *instr);
-        int (*point) (struct mtd_info *mtd, loff_t from, size_t len,
-                      size_t *retlen, void **virt, resource_size_t *phys);
-        void (*unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
-        unsigned long (*get_unmapped_area) (struct mtd_info *mtd,
-                                            unsigned long len,
-                                            unsigned long offset,
-                                            unsigned long flags);
-        int (*read) (struct mtd_info *mtd, loff_t from, size_t len,
-                     size_t *retlen, u_char *buf);
-        int (*write) (struct mtd_info *mtd, loff_t to, size_t len,
-                      size_t *retlen, const u_char *buf);
-        int (*panic_write) (struct mtd_info *mtd, loff_t to, size_t len,
-                            size_t *retlen, const u_char *buf);
-        int (*read_oob) (struct mtd_info *mtd, loff_t from,
-                         struct mtd_oob_ops *ops);
-        int (*write_oob) (struct mtd_info *mtd, loff_t to,
+        int (*_erase) (struct mtd_info *mtd, struct erase_info *instr);
+        int (*_point) (struct mtd_info *mtd, loff_t from, size_t len,
+                       size_t *retlen, void **virt, resource_size_t *phys);
+        int (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
+        unsigned long (*_get_unmapped_area) (struct mtd_info *mtd,
+                                             unsigned long len,
+                                             unsigned long offset,
+                                             unsigned long flags);
+        int (*_read) (struct mtd_info *mtd, loff_t from, size_t len,
+                      size_t *retlen, u_char *buf);
+        int (*_write) (struct mtd_info *mtd, loff_t to, size_t len,
+                       size_t *retlen, const u_char *buf);
+        int (*_panic_write) (struct mtd_info *mtd, loff_t to, size_t len,
+                             size_t *retlen, const u_char *buf);
+        int (*_read_oob) (struct mtd_info *mtd, loff_t from,
                           struct mtd_oob_ops *ops);
-        int (*get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
-                                   size_t len);
-        int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from,
-                                   size_t len, size_t *retlen, u_char *buf);
-        int (*get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
-                                   size_t len);
-        int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from,
-                                   size_t len, size_t *retlen, u_char *buf);
-        int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t to, size_t len,
-                                    size_t *retlen, u_char *buf);
-        int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from,
-                                   size_t len);
-        int (*writev) (struct mtd_info *mtd, const struct kvec *vecs,
+        int (*_write_oob) (struct mtd_info *mtd, loff_t to,
+                           struct mtd_oob_ops *ops);
+        int (*_get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
+                                    size_t len);
+        int (*_read_fact_prot_reg) (struct mtd_info *mtd, loff_t from,
+                                    size_t len, size_t *retlen, u_char *buf);
+        int (*_get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
+                                    size_t len);
+        int (*_read_user_prot_reg) (struct mtd_info *mtd, loff_t from,
+                                    size_t len, size_t *retlen, u_char *buf);
+        int (*_write_user_prot_reg) (struct mtd_info *mtd, loff_t to,
+                                     size_t len, size_t *retlen, u_char *buf);
+        int (*_lock_user_prot_reg) (struct mtd_info *mtd, loff_t from,
+                                    size_t len);
+        int (*_writev) (struct mtd_info *mtd, const struct kvec *vecs,
                         unsigned long count, loff_t to, size_t *retlen);
-        void (*sync) (struct mtd_info *mtd);
-        int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
-        int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
-        int (*is_locked) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
-        int (*block_isbad) (struct mtd_info *mtd, loff_t ofs);
-        int (*block_markbad) (struct mtd_info *mtd, loff_t ofs);
-        int (*suspend) (struct mtd_info *mtd);
-        void (*resume) (struct mtd_info *mtd);
+        void (*_sync) (struct mtd_info *mtd);
+        int (*_lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+        int (*_unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+        int (*_is_locked) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+        int (*_block_isbad) (struct mtd_info *mtd, loff_t ofs);
+        int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs);
+        int (*_suspend) (struct mtd_info *mtd);
+        void (*_resume) (struct mtd_info *mtd);
         /*
          * If the driver is something smart, like UBI, it may need to maintain
          * its own reference counting. The below functions are only for driver.
          */
-        int (*get_device) (struct mtd_info *mtd);
-        void (*put_device) (struct mtd_info *mtd);
+        int (*_get_device) (struct mtd_info *mtd);
+        void (*_put_device) (struct mtd_info *mtd);
 
         /* Backing device capabilities for this device
          * - provides mmap capabilities
@@ -240,214 +243,75 @@ struct mtd_info {
         int usecount;
 };
 
-/*
- * Erase is an asynchronous operation.  Device drivers are supposed
- * to call instr->callback() whenever the operation completes, even
- * if it completes with a failure.
- * Callers are supposed to pass a callback function and wait for it
- * to be called before writing to the block.
- */
-static inline int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
-{
-        return mtd->erase(mtd, instr);
-}
-
-/*
- * This stuff for eXecute-In-Place. phys is optional and may be set to NULL.
- */
-static inline int mtd_point(struct mtd_info *mtd, loff_t from, size_t len,
-                            size_t *retlen, void **virt, resource_size_t *phys)
-{
-        *retlen = 0;
-        if (!mtd->point)
-                return -EOPNOTSUPP;
-        return mtd->point(mtd, from, len, retlen, virt, phys);
-}
-
-/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
-static inline void mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
-{
-        return mtd->unpoint(mtd, from, len);
-}
-
-/*
- * Allow NOMMU mmap() to directly map the device (if not NULL)
- * - return the address to which the offset maps
- * - return -ENOSYS to indicate refusal to do the mapping
- */
-static inline unsigned long mtd_get_unmapped_area(struct mtd_info *mtd,
-                                                  unsigned long len,
-                                                  unsigned long offset,
-                                                  unsigned long flags)
-{
-        if (!mtd->get_unmapped_area)
-                return -EOPNOTSUPP;
-        return mtd->get_unmapped_area(mtd, len, offset, flags);
-}
-
-static inline int mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
-                           size_t *retlen, u_char *buf)
-{
-        return mtd->read(mtd, from, len, retlen, buf);
-}
-
-static inline int mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
-                            size_t *retlen, const u_char *buf)
-{
-        *retlen = 0;
-        if (!mtd->write)
-                return -EROFS;
-        return mtd->write(mtd, to, len, retlen, buf);
-}
-
-/*
- * In blackbox flight recorder like scenarios we want to make successful writes
- * in interrupt context. panic_write() is only intended to be called when its
- * known the kernel is about to panic and we need the write to succeed. Since
- * the kernel is not going to be running for much longer, this function can
- * break locks and delay to ensure the write succeeds (but not sleep).
- */
-static inline int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
-                                  size_t *retlen, const u_char *buf)
-{
-        *retlen = 0;
-        if (!mtd->panic_write)
-                return -EOPNOTSUPP;
-        return mtd->panic_write(mtd, to, len, retlen, buf);
-}
+int mtd_erase(struct mtd_info *mtd, struct erase_info *instr);
+int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
+              void **virt, resource_size_t *phys);
+int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
+unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len,
+                                    unsigned long offset, unsigned long flags);
+int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
+             u_char *buf);
+int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
+              const u_char *buf);
+int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
+                    const u_char *buf);
 
 static inline int mtd_read_oob(struct mtd_info *mtd, loff_t from,
                                struct mtd_oob_ops *ops)
 {
         ops->retlen = ops->oobretlen = 0;
-        if (!mtd->read_oob)
+        if (!mtd->_read_oob)
                 return -EOPNOTSUPP;
-        return mtd->read_oob(mtd, from, ops);
+        return mtd->_read_oob(mtd, from, ops);
 }
 
 static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to,
                                 struct mtd_oob_ops *ops)
 {
         ops->retlen = ops->oobretlen = 0;
-        if (!mtd->write_oob)
-                return -EOPNOTSUPP;
-        return mtd->write_oob(mtd, to, ops);
-}
-
-/*
- * Method to access the protection register area, present in some flash
- * devices. The user data is one time programmable but the factory data is read
- * only.
- */
-static inline int mtd_get_fact_prot_info(struct mtd_info *mtd,
-                                         struct otp_info *buf, size_t len)
-{
-        if (!mtd->get_fact_prot_info)
+        if (!mtd->_write_oob)
                 return -EOPNOTSUPP;
-        return mtd->get_fact_prot_info(mtd, buf, len);
-}
-
-static inline int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
-                                         size_t len, size_t *retlen,
-                                         u_char *buf)
-{
-        *retlen = 0;
-        if (!mtd->read_fact_prot_reg)
-                return -EOPNOTSUPP;
-        return mtd->read_fact_prot_reg(mtd, from, len, retlen, buf);
-}
-
-static inline int mtd_get_user_prot_info(struct mtd_info *mtd,
-                                         struct otp_info *buf,
-                                         size_t len)
-{
-        if (!mtd->get_user_prot_info)
-                return -EOPNOTSUPP;
-        return mtd->get_user_prot_info(mtd, buf, len);
-}
-
-static inline int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
-                                         size_t len, size_t *retlen,
-                                         u_char *buf)
-{
-        *retlen = 0;
-        if (!mtd->read_user_prot_reg)
-                return -EOPNOTSUPP;
-        return mtd->read_user_prot_reg(mtd, from, len, retlen, buf);
-}
-
-static inline int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to,
-                                          size_t len, size_t *retlen,
-                                          u_char *buf)
-{
-        *retlen = 0;
-        if (!mtd->write_user_prot_reg)
-                return -EOPNOTSUPP;
-        return mtd->write_user_prot_reg(mtd, to, len, retlen, buf);
+        if (!(mtd->flags & MTD_WRITEABLE))
+                return -EROFS;
+        return mtd->_write_oob(mtd, to, ops);
 }
 
-static inline int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
-                                         size_t len)
-{
-        if (!mtd->lock_user_prot_reg)
-                return -EOPNOTSUPP;
-        return mtd->lock_user_prot_reg(mtd, from, len);
-}
+int mtd_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
+                           size_t len);
+int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
+                           size_t *retlen, u_char *buf);
+int mtd_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf,
+                           size_t len);
+int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
+                           size_t *retlen, u_char *buf);
+int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len,
+                            size_t *retlen, u_char *buf);
+int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len);
 
 int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
                unsigned long count, loff_t to, size_t *retlen);
 
 static inline void mtd_sync(struct mtd_info *mtd)
 {
-        if (mtd->sync)
-                mtd->sync(mtd);
-}
-
-/* Chip-supported device locking */
-static inline int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-{
-        if (!mtd->lock)
-                return -EOPNOTSUPP;
-        return mtd->lock(mtd, ofs, len);
+        if (mtd->_sync)
+                mtd->_sync(mtd);
 }
 
-static inline int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-{
-        if (!mtd->unlock)
-                return -EOPNOTSUPP;
-        return mtd->unlock(mtd, ofs, len);
-}
-
-static inline int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-{
-        if (!mtd->is_locked)
-                return -EOPNOTSUPP;
-        return mtd->is_locked(mtd, ofs, len);
-}
+int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs);
+int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs);
 
 static inline int mtd_suspend(struct mtd_info *mtd)
 {
-        return mtd->suspend ? mtd->suspend(mtd) : 0;
+        return mtd->_suspend ? mtd->_suspend(mtd) : 0;
 }
 
 static inline void mtd_resume(struct mtd_info *mtd)
 {
-        if (mtd->resume)
-                mtd->resume(mtd);
-}
-
-static inline int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
-{
-        if (!mtd->block_isbad)
-                return 0;
-        return mtd->block_isbad(mtd, ofs);
-}
-
-static inline int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)
-{
-        if (!mtd->block_markbad)
-                return -EOPNOTSUPP;
-        return mtd->block_markbad(mtd, ofs);
+        if (mtd->_resume)
+                mtd->_resume(mtd);
 }
 
 static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
@@ -482,12 +346,12 @@ static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd)
 
 static inline int mtd_has_oob(const struct mtd_info *mtd)
 {
-        return mtd->read_oob && mtd->write_oob;
+        return mtd->_read_oob && mtd->_write_oob;
 }
 
 static inline int mtd_can_have_bb(const struct mtd_info *mtd)
 {
-        return !!mtd->block_isbad;
+        return !!mtd->_block_isbad;
 }
 
         /* Kernel-side ioctl definitions */
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 63b5a8b6dfbd..1482340d3d9f 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -324,6 +324,7 @@ struct nand_hw_control {
  * @steps:      number of ECC steps per page
  * @size:       data bytes per ECC step
  * @bytes:      ECC bytes per step
+ * @strength:   max number of correctible bits per ECC step
  * @total:      total number of ECC bytes per page
  * @prepad:     padding information for syndrome based ECC generators
  * @postpad:    padding information for syndrome based ECC generators
@@ -351,6 +352,7 @@ struct nand_ecc_ctrl {
         int size;
         int bytes;
         int total;
+        int strength;
         int prepad;
         int postpad;
         struct nand_ecclayout   *layout;
@@ -448,8 +450,9 @@ struct nand_buffers {
  *                      will be copied to the appropriate nand_bbt_descr's.
  * @badblockpos:        [INTERN] position of the bad block marker in the oob
  *                      area.
- * @badblockbits:       [INTERN] number of bits to left-shift the bad block
- *                      number
+ * @badblockbits:       [INTERN] minimum number of set bits in a good block's
+ *                      bad block marker position; i.e., BBM == 11110111b is
+ *                      not bad when badblockbits == 7
  * @cellinfo:           [INTERN] MLC/multichip data from chip ident
  * @numchips:           [INTERN] number of physical chips
  * @chipsize:           [INTERN] the size of one chip for multichip arrays
diff --git a/include/linux/mtd/pmc551.h b/include/linux/mtd/pmc551.h
deleted file mode 100644
index 27ad40aed19f..000000000000
--- a/include/linux/mtd/pmc551.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * PMC551 PCI Mezzanine Ram Device
- *
- * Author:
- *       Mark Ferrell
- *       Copyright 1999,2000 Nortel Networks
- *
- * License:
- *       As part of this driver was derrived from the slram.c driver it falls
- *       under the same license, which is GNU General Public License v2
- */
-
-#ifndef __MTD_PMC551_H__
-#define __MTD_PMC551_H__
-
-#include <linux/mtd/mtd.h>
-
-#define PMC551_VERSION \
-       "Ramix PMC551 PCI Mezzanine Ram Driver. (C) 1999,2000 Nortel Networks.\n"
-
-/*
- * Our personal and private information
- */
-struct mypriv {
-        struct pci_dev *dev;
-        u_char *start;
-        u32    base_map0;
-        u32    curr_map0;
-        u32    asize;
-        struct mtd_info *nextpmc551;
-};
-
-/*
- * Function Prototypes
- */
-static int pmc551_erase(struct mtd_info *, struct erase_info *);
-static void pmc551_unpoint(struct mtd_info *, loff_t, size_t);
-static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
-                size_t *retlen, void **virt, resource_size_t *phys);
-static int pmc551_read(struct mtd_info *, loff_t, size_t, size_t *, u_char *);
-static int pmc551_write(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
-
-
-/*
- * Define the PCI ID's if the kernel doesn't define them for us
- */
-#ifndef PCI_VENDOR_ID_V3_SEMI
-#define PCI_VENDOR_ID_V3_SEMI             0x11b0
-#endif
-
-#ifndef PCI_DEVICE_ID_V3_SEMI_V370PDC
-#define PCI_DEVICE_ID_V3_SEMI_V370PDC     0x0200
-#endif
-
-
-#define PMC551_PCI_MEM_MAP0     0x50
-#define PMC551_PCI_MEM_MAP1     0x54
-#define PMC551_PCI_MEM_MAP_MAP_ADDR_MASK        0x3ff00000
-#define PMC551_PCI_MEM_MAP_APERTURE_MASK        0x000000f0
-#define PMC551_PCI_MEM_MAP_REG_EN               0x00000002
-#define PMC551_PCI_MEM_MAP_ENABLE               0x00000001
-
-#define PMC551_SDRAM_MA         0x60
-#define PMC551_SDRAM_CMD        0x62
-#define PMC551_DRAM_CFG         0x64
-#define PMC551_SYS_CTRL_REG     0x78
-
-#define PMC551_DRAM_BLK0        0x68
-#define PMC551_DRAM_BLK1        0x6c
-#define PMC551_DRAM_BLK2        0x70
-#define PMC551_DRAM_BLK3        0x74
-#define PMC551_DRAM_BLK_GET_SIZE(x) (524288<<((x>>4)&0x0f))
-#define PMC551_DRAM_BLK_SET_COL_MUX(x,v) (((x) & ~0x00007000) | (((v) & 0x7) << 12))
-#define PMC551_DRAM_BLK_SET_ROW_MUX(x,v) (((x) & ~0x00000f00) | (((v) & 0xf) << 8))
-
-
-#endif /* __MTD_PMC551_H__ */
-
diff --git a/include/linux/mtd/sh_flctl.h b/include/linux/mtd/sh_flctl.h
index 9cf4c4c79555..a38e1fa8af01 100644
--- a/include/linux/mtd/sh_flctl.h
+++ b/include/linux/mtd/sh_flctl.h
@@ -23,6 +23,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
+#include <linux/pm_qos.h>
 
 /* FLCTL registers */
 #define FLCMNCR(f)              (f->reg + 0x0)
@@ -38,6 +39,7 @@
 #define FLDTFIFO(f)             (f->reg + 0x24)
 #define FLECFIFO(f)             (f->reg + 0x28)
 #define FLTRCR(f)               (f->reg + 0x2C)
+#define FLHOLDCR(f)             (f->reg + 0x38)
 #define FL4ECCRESULT0(f)        (f->reg + 0x80)
 #define FL4ECCRESULT1(f)        (f->reg + 0x84)
 #define FL4ECCRESULT2(f)        (f->reg + 0x88)
@@ -67,6 +69,30 @@
 #define CE0_ENABLE      (0x1 << 3)      /* Chip Enable 0 */
 #define TYPESEL_SET     (0x1 << 0)
 
+/*
+ * Clock settings using the PULSEx registers from FLCMNCR
+ *
+ * Some hardware uses bits called PULSEx instead of FCKSEL_E and QTSEL_E
+ * to control the clock divider used between the High-Speed Peripheral Clock
+ * and the FLCTL internal clock. If so, use CLK_8_BIT_xxx for connecting 8 bit
+ * and CLK_16_BIT_xxx for connecting 16 bit bus bandwith NAND chips. For the 16
+ * bit version the divider is seperate for the pulse width of high and low
+ * signals.
+ */
+#define PULSE3  (0x1 << 27)
+#define PULSE2  (0x1 << 17)
+#define PULSE1  (0x1 << 15)
+#define PULSE0  (0x1 << 9)
+#define CLK_8B_0_5                      PULSE1
+#define CLK_8B_1                        0x0
+#define CLK_8B_1_5                      (PULSE1 | PULSE2)
+#define CLK_8B_2                        PULSE0
+#define CLK_8B_3                        (PULSE0 | PULSE1 | PULSE2)
+#define CLK_8B_4                        (PULSE0 | PULSE2)
+#define CLK_16B_6L_2H                   PULSE0
+#define CLK_16B_9L_3H                   (PULSE0 | PULSE1 | PULSE2)
+#define CLK_16B_12L_4H                  (PULSE0 | PULSE2)
+
 /* FLCMDCR control bits */
 #define ADRCNT2_E       (0x1 << 31)     /* 5byte address enable */
 #define ADRMD_E         (0x1 << 26)     /* Sector address access */
@@ -85,6 +111,15 @@
 #define TRSTRT          (0x1 << 0)      /* translation start */
 #define TREND           (0x1 << 1)      /* translation end */
 
+/*
+ * FLHOLDCR control bits
+ *
+ * HOLDEN: Bus Occupancy Enable (inverted)
+ * Enable this bit when the external bus might be used in between transfers.
+ * If not set and the bus gets used by other modules, a deadlock occurs.
+ */
+#define HOLDEN          (0x1 << 0)
+
 /* FL4ECCCR control bits */
 #define _4ECCFA         (0x1 << 2)      /* 4 symbols correct fault */
 #define _4ECCEND        (0x1 << 1)      /* 4 symbols end */
@@ -97,6 +132,7 @@ struct sh_flctl {
         struct mtd_info         mtd;
         struct nand_chip        chip;
         struct platform_device  *pdev;
+        struct dev_pm_qos_request pm_qos;
         void __iomem            *reg;
 
         uint8_t done_buff[2048 + 64];   /* max size 2048 + 64 */
@@ -108,11 +144,14 @@ struct sh_flctl {
         int     erase1_page_addr;       /* page_addr in ERASE1 cmd */
         uint32_t erase_ADRCNT;          /* bits of FLCMDCR in ERASE1 cmd */
         uint32_t rw_ADRCNT;     /* bits of FLCMDCR in READ WRITE cmd */
+        uint32_t flcmncr_base;  /* base value of FLCMNCR */
 
         int     hwecc_cant_correct[4];
 
         unsigned page_size:1;   /* NAND page size (0 = 512, 1 = 2048) */
         unsigned hwecc:1;       /* Hardware ECC (0 = disabled, 1 = enabled) */
+        unsigned holden:1;      /* Hardware has FLHOLDCR and HOLDEN is set */
+        unsigned qos_request:1; /* QoS request to prevent deep power shutdown */
 };
 
 struct sh_flctl_platform_data {
@@ -121,6 +160,7 @@ struct sh_flctl_platform_data {
         unsigned long           flcmncr_val;
 
         unsigned has_hwecc:1;
+        unsigned use_holden:1;
 };
 
 static inline struct sh_flctl *mtd_to_flctl(struct mtd_info *mtdinfo)
diff --git a/include/linux/mtd/spear_smi.h b/include/linux/mtd/spear_smi.h
new file mode 100644
index 000000000000..8ae1726044c3
--- /dev/null
+++ b/include/linux/mtd/spear_smi.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright © 2010 ST Microelectronics
+ * Shiraz Hashim <shiraz.hashim@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __MTD_SPEAR_SMI_H
+#define __MTD_SPEAR_SMI_H
+
+#include <linux/types.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+
+/* max possible slots for serial-nor flash chip in the SMI controller */
+#define MAX_NUM_FLASH_CHIP      4
+
+/* macro to define partitions for flash devices */
+#define DEFINE_PARTS(n, of, s)          \
+{                                       \
+        .name = n,                      \
+        .offset = of,                   \
+        .size = s,                      \
+}
+
+/**
+ * struct spear_smi_flash_info - platform structure for passing flash
+ * information
+ *
+ * name: name of the serial nor flash for identification
+ * mem_base: the memory base on which the flash is mapped
+ * size: size of the flash in bytes
+ * partitions: parition details
+ * nr_partitions: number of partitions
+ * fast_mode: whether flash supports fast mode
+ */
+
+struct spear_smi_flash_info {
+        char *name;
+        unsigned long mem_base;
+        unsigned long size;
+        struct mtd_partition *partitions;
+        int nr_partitions;
+        u8 fast_mode;
+};
+
+/**
+ * struct spear_smi_plat_data - platform structure for configuring smi
+ *
+ * clk_rate: clk rate at which SMI must operate
+ * num_flashes: number of flashes present on board
+ * board_flash_info: specific details of each flash present on board
+ */
+struct spear_smi_plat_data {
+        unsigned long clk_rate;
+        int num_flashes;
+        struct spear_smi_flash_info *board_flash_info;
+        struct device_node *np[MAX_NUM_FLASH_CHIP];
+};
+
+#endif /* __MTD_SPEAR_SMI_H */
diff --git a/sound/soc/mxs/mxs-pcm.c b/sound/soc/mxs/mxs-pcm.c
index 6ca1f46d84a4..e373fbbc97a0 100644
--- a/sound/soc/mxs/mxs-pcm.c
+++ b/sound/soc/mxs/mxs-pcm.c
@@ -28,6 +28,7 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/dmaengine.h>
+#include <linux/fsl/mxs-dma.h>
 
 #include <sound/core.h>
 #include <sound/initval.h>
@@ -36,7 +37,6 @@
 #include <sound/soc.h>
 #include <sound/dmaengine_pcm.h>
 
-#include <mach/dma.h>
 #include "mxs-pcm.h"
 
 struct mxs_pcm_dma_data {
diff --git a/sound/soc/mxs/mxs-saif.c b/sound/soc/mxs/mxs-saif.c
index 12be05b16880..53f4fd8feced 100644
--- a/sound/soc/mxs/mxs-saif.c
+++ b/sound/soc/mxs/mxs-saif.c
@@ -24,12 +24,12 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/time.h>
+#include <linux/fsl/mxs-dma.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/saif.h>
-#include <mach/dma.h>
 #include <asm/mach-types.h>
 #include <mach/hardware.h>
 #include <mach/mxs.h>