Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

The SmartMedia FTL code depends on new kfifo bits from 2.6.33

13 files changed, 373 insertions, 271 deletions

diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 4c364d44ad59..2de0cc823d60 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -549,4 +549,21 @@ config MTD_VMU
           To build this as a module select M here, the module will be called
           vmu-flash.
 
+config MTD_PISMO
+        tristate "MTD discovery driver for PISMO modules"
+        depends on I2C
+        depends on ARCH_VERSATILE
+        help
+          This driver allows for discovery of PISMO modules - see
+          <http://www.pismoworld.org/>.  These are small modules containing
+          up to five memory devices (eg, SRAM, flash, DOC) described by an
+          I2C EEPROM.
+
+          This driver does not create any MTD maps itself; instead it
+          creates MTD physmap and MTD SRAM platform devices.  If you
+          enable this option, you should consider enabling MTD_PHYSMAP
+          and/or MTD_PLATRAM according to the devices on your module.
+
+          When built as a module, it will be called pismo.ko
+
 endmenu
diff --git a/drivers/mtd/maps/pismo.c b/drivers/mtd/maps/pismo.c
new file mode 100644
index 000000000000..c48cad271f5d
--- /dev/null
+++ b/drivers/mtd/maps/pismo.c
@@ -0,0 +1,320 @@
+/*
+ * PISMO memory driver - http://www.pismoworld.org/
+ *
+ * For ARM Realview and Versatile platforms
+ *
+ * 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.
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/plat-ram.h>
+#include <linux/mtd/pismo.h>
+
+#define PISMO_NUM_CS    5
+
+struct pismo_cs_block {
+        u8      type;
+        u8      width;
+        __le16  access;
+        __le32  size;
+        u32     reserved[2];
+        char    device[32];
+} __packed;
+
+struct pismo_eeprom {
+        struct pismo_cs_block cs[PISMO_NUM_CS];
+        char    board[15];
+        u8      sum;
+} __packed;
+
+struct pismo_mem {
+        phys_addr_t base;
+        u32     size;
+        u16     access;
+        u8      width;
+        u8      type;
+};
+
+struct pismo_data {
+        struct i2c_client       *client;
+        void                    (*vpp)(void *, int);
+        void                    *vpp_data;
+        struct platform_device  *dev[PISMO_NUM_CS];
+};
+
+/* FIXME: set_vpp could do with a better calling convention */
+static struct pismo_data *vpp_pismo;
+static DEFINE_MUTEX(pismo_mutex);
+
+static int pismo_setvpp_probe_fix(struct pismo_data *pismo)
+{
+        mutex_lock(&pismo_mutex);
+        if (vpp_pismo) {
+                mutex_unlock(&pismo_mutex);
+                kfree(pismo);
+                return -EBUSY;
+        }
+        vpp_pismo = pismo;
+        mutex_unlock(&pismo_mutex);
+        return 0;
+}
+
+static void pismo_setvpp_remove_fix(struct pismo_data *pismo)
+{
+        mutex_lock(&pismo_mutex);
+        if (vpp_pismo == pismo)
+                vpp_pismo = NULL;
+        mutex_unlock(&pismo_mutex);
+}
+
+static void pismo_set_vpp(struct map_info *map, int on)
+{
+        struct pismo_data *pismo = vpp_pismo;
+
+        pismo->vpp(pismo->vpp_data, on);
+}
+/* end of hack */
+
+
+static unsigned int __devinit pismo_width_to_bytes(unsigned int width)
+{
+        width &= 15;
+        if (width > 2)
+                return 0;
+        return 1 << width;
+}
+
+static int __devinit pismo_eeprom_read(struct i2c_client *client, void *buf,
+        u8 addr, size_t size)
+{
+        int ret;
+        struct i2c_msg msg[] = {
+                {
+                        .addr = client->addr,
+                        .len = sizeof(addr),
+                        .buf = &addr,
+                }, {
+                        .addr = client->addr,
+                        .flags = I2C_M_RD,
+                        .len = size,
+                        .buf = buf,
+                },
+        };
+
+        ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+
+        return ret == ARRAY_SIZE(msg) ? size : -EIO;
+}
+
+static int __devinit pismo_add_device(struct pismo_data *pismo, int i,
+        struct pismo_mem *region, const char *name, void *pdata, size_t psize)
+{
+        struct platform_device *dev;
+        struct resource res = { };
+        phys_addr_t base = region.base;
+        int ret;
+
+        if (base == ~0)
+                return -ENXIO;
+
+        res.start = base;
+        res.end = base + region->size - 1;
+        res.flags = IORESOURCE_MEM;
+
+        dev = platform_device_alloc(name, i);
+        if (!dev)
+                return -ENOMEM;
+        dev->dev.parent = &pismo->client->dev;
+
+        do {
+                ret = platform_device_add_resources(dev, &res, 1);
+                if (ret)
+                        break;
+
+                ret = platform_device_add_data(dev, pdata, psize);
+                if (ret)
+                        break;
+
+                ret = platform_device_add(dev);
+                if (ret)
+                        break;
+
+                pismo->dev[i] = dev;
+                return 0;
+        } while (0);
+
+        platform_device_put(dev);
+        return ret;
+}
+
+static int __devinit pismo_add_nor(struct pismo_data *pismo, int i,
+        struct pismo_mem *region)
+{
+        struct physmap_flash_data data = {
+                .width = region->width,
+        };
+
+        if (pismo->vpp)
+                data.set_vpp = pismo_set_vpp;
+
+        return pismo_add_device(pismo, i, region, "physmap-flash",
+                &data, sizeof(data));
+}
+
+static int __devinit pismo_add_sram(struct pismo_data *pismo, int i,
+        struct pismo_mem *region)
+{
+        struct platdata_mtd_ram data = {
+                .bankwidth = region->width,
+        };
+
+        return pismo_add_device(pismo, i, region, "mtd-ram",
+                &data, sizeof(data));
+}
+
+static void __devinit pismo_add_one(struct pismo_data *pismo, int i,
+        const struct pismo_cs_block *cs, phys_addr_t base)
+{
+        struct device *dev = &pismo->client->dev;
+        struct pismo_mem region;
+
+        region.base = base;
+        region.type = cs->type;
+        region.width = pismo_width_to_bytes(cs->width);
+        region.access = le16_to_cpu(cs->access);
+        region.size = le32_to_cpu(cs->size);
+
+        if (region.width == 0) {
+                dev_err(dev, "cs%u: bad width: %02x, ignoring\n", i, cs->width);
+                return;
+        }
+
+        /*
+         * FIXME: may need to the platforms memory controller here, but at
+         * the moment we assume that it has already been correctly setup.
+         * The memory controller can also tell us the base address as well.
+         */
+
+        dev_info(dev, "cs%u: %.32s: type %02x access %u00ps size %uK\n",
+                i, cs->device, region.type, region.access, region.size / 1024);
+
+        switch (region.type) {
+        case 0:
+                break;
+        case 1:
+                /* static DOC */
+                break;
+        case 2:
+                /* static NOR */
+                pismo_add_nor(pismo, i, &region);
+                break;
+        case 3:
+                /* static RAM */
+                pismo_add_sram(pismo, i, &region);
+                break;
+        }
+}
+
+static int __devexit pismo_remove(struct i2c_client *client)
+{
+        struct pismo_data *pismo = i2c_get_clientdata(client);
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(pismo->dev); i++)
+                platform_device_unregister(pismo->dev[i]);
+
+        /* FIXME: set_vpp needs saner arguments */
+        pismo_setvpp_remove_fix(pismo);
+
+        kfree(pismo);
+
+        return 0;
+}
+
+static int __devinit pismo_probe(struct i2c_client *client,
+                                 const struct i2c_device_id *id)
+{
+        struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+        struct pismo_pdata *pdata = client->dev.platform_data;
+        struct pismo_eeprom eeprom;
+        struct pismo_data *pismo;
+        int ret, i;
+
+        if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
+                dev_err(&client->dev, "functionality mismatch\n");
+                return -EIO;
+        }
+
+        pismo = kzalloc(sizeof(*pismo), GFP_KERNEL);
+        if (!pismo)
+                return -ENOMEM;
+
+        /* FIXME: set_vpp needs saner arguments */
+        ret = pismo_setvpp_probe_fix(pismo);
+        if (ret)
+                return ret;
+
+        pismo->client = client;
+        if (pdata) {
+                pismo->vpp = pdata->set_vpp;
+                pismo->vpp_data = pdata->vpp_data;
+        }
+        i2c_set_clientdata(client, pismo);
+
+        ret = pismo_eeprom_read(client, &eeprom, 0, sizeof(eeprom));
+        if (ret < 0) {
+                dev_err(&client->dev, "error reading EEPROM: %d\n", ret);
+                return ret;
+        }
+
+        dev_info(&client->dev, "%.15s board found\n", eeprom.board);
+
+        for (i = 0; i < ARRAY_SIZE(eeprom.cs); i++)
+                if (eeprom.cs[i].type != 0xff)
+                        pismo_add_one(pismo, i, &eeprom.cs[i],
+                                      pdata->cs_addrs[i]);
+
+        return 0;
+}
+
+static const struct i2c_device_id pismo_id[] = {
+        { "pismo" },
+        { },
+};
+MODULE_DEVICE_TABLE(i2c, pismo_id);
+
+static struct i2c_driver pismo_driver = {
+        .driver = {
+                .name   = "pismo",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = pismo_probe,
+        .remove         = __devexit_p(pismo_remove),
+        .id_table       = pismo_id,
+};
+
+static int __init pismo_init(void)
+{
+        BUILD_BUG_ON(sizeof(struct pismo_cs_block) != 48);
+        BUILD_BUG_ON(sizeof(struct pismo_eeprom) != 256);
+
+        return i2c_add_driver(&pismo_driver);
+}
+module_init(pismo_init);
+
+static void __exit pismo_exit(void)
+{
+        i2c_del_driver(&pismo_driver);
+}
+module_exit(pismo_exit);
+
+MODULE_AUTHOR("Russell King <linux@arm.linux.org.uk>");
+MODULE_DESCRIPTION("PISMO memory driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c
index 74fa075c838a..b13f6417b5b2 100644
--- a/drivers/mtd/maps/pxa2xx-flash.c
+++ b/drivers/mtd/maps/pxa2xx-flash.c
@@ -20,14 +20,23 @@
 
 #include <asm/io.h>
 #include <mach/hardware.h>
-#include <asm/cacheflush.h>
 
 #include <asm/mach/flash.h>
 
+#define CACHELINESIZE   32
+
 static void pxa2xx_map_inval_cache(struct map_info *map, unsigned long from,
                                       ssize_t len)
 {
-        flush_ioremap_region(map->phys, map->cached, from, len);
+        unsigned long start = (unsigned long)map->cached + from;
+        unsigned long end = start + len;
+
+        start &= ~(CACHELINESIZE - 1);
+        while (start < end) {
+                /* invalidate D cache line */
+                asm volatile ("mcr p15, 0, %0, c7, c6, 1" : : "r" (start));
+                start += CACHELINESIZE;
+        }
 }
 
 struct pxa2xx_flash_info {
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index c89aaab15712..7a67218e86fc 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -289,14 +289,6 @@ config MTD_NAND_SHARPSL
         tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
         depends on ARCH_PXA
 
-config MTD_NAND_BASLER_EXCITE
-        tristate  "Support for NAND Flash on Basler eXcite"
-        depends on BASLER_EXCITE
-        help
-          This enables the driver for the NAND flash device found on the
-          Basler eXcite Smart Camera. If built as a module, the driver
-          will be named excite_nandflash.
-
 config MTD_NAND_CAFE
         tristate "NAND support for OLPC CAFÉ chip"
         depends on PCI
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index d9257961a6ee..f39d0b6ed42c 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -27,7 +27,6 @@ obj-$(CONFIG_MTD_NAND_ATMEL)		+= atmel_nand.o
 obj-$(CONFIG_MTD_NAND_GPIO)             += gpio.o
 obj-$(CONFIG_MTD_NAND_OMAP2)            += omap2.o
 obj-$(CONFIG_MTD_NAND_CM_X270)          += cmx270_nand.o
-obj-$(CONFIG_MTD_NAND_BASLER_EXCITE)    += excite_nandflash.o
 obj-$(CONFIG_MTD_NAND_PXA3xx)           += pxa3xx_nand.o
 obj-$(CONFIG_MTD_NAND_TMIO)             += tmio_nand.o
 obj-$(CONFIG_MTD_NAND_PLATFORM)         += plat_nand.o
diff --git a/drivers/mtd/nand/excite_nandflash.c b/drivers/mtd/nand/excite_nandflash.c
deleted file mode 100644
index af6a6a5399e1..000000000000
--- a/drivers/mtd/nand/excite_nandflash.c
+++ /dev/null
@@ -1,248 +0,0 @@
-/*
-*  Copyright (C) 2005 - 2007 by Basler Vision Technologies AG
-*  Author: Thomas Koeller <thomas.koeller.qbaslerweb.com>
-*  Original code by Thies Moeller <thies.moeller@baslerweb.com>
-*
-*  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.
-*
-*  This program is distributed in the hope that it will be useful,
-*  but WITHOUT ANY WARRANTY; without even the implied warranty of
-*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*  GNU General Public License for more details.
-*
-*  You should have received a copy of the GNU General Public License
-*  along with this program; if not, write to the Free Software
-*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/ioport.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/nand_ecc.h>
-#include <linux/mtd/partitions.h>
-
-#include <asm/io.h>
-#include <asm/rm9k-ocd.h>
-
-#include <excite_nandflash.h>
-
-#define EXCITE_NANDFLASH_VERSION "0.1"
-
-/* I/O register offsets */
-#define EXCITE_NANDFLASH_DATA_BYTE   0x00
-#define EXCITE_NANDFLASH_STATUS_BYTE 0x0c
-#define EXCITE_NANDFLASH_ADDR_BYTE   0x10
-#define EXCITE_NANDFLASH_CMD_BYTE    0x14
-
-/* prefix for debug output */
-static const char module_id[] = "excite_nandflash";
-
-/*
- * partition definition
- */
-static const struct mtd_partition partition_info[] = {
-        {
-                .name = "eXcite RootFS",
-                .offset = 0,
-                .size = MTDPART_SIZ_FULL
-        }
-};
-
-static inline const struct resource *
-excite_nand_get_resource(struct platform_device *d, unsigned long flags,
-                         const char *basename)
-{
-        char buf[80];
-
-        if (snprintf(buf, sizeof buf, "%s_%u", basename, d->id) >= sizeof buf)
-                return NULL;
-        return platform_get_resource_byname(d, flags, buf);
-}
-
-static inline void __iomem *
-excite_nand_map_regs(struct platform_device *d, const char *basename)
-{
-        void *result = NULL;
-        const struct resource *const r =
-            excite_nand_get_resource(d, IORESOURCE_MEM, basename);
-
-        if (r)
-                result = ioremap_nocache(r->start, r->end + 1 - r->start);
-        return result;
-}
-
-/* controller and mtd information */
-struct excite_nand_drvdata {
-        struct mtd_info board_mtd;
-        struct nand_chip board_chip;
-        void __iomem *regs;
-        void __iomem *tgt;
-};
-
-/* Control function */
-static void excite_nand_control(struct mtd_info *mtd, int cmd,
-                                       unsigned int ctrl)
-{
-        struct excite_nand_drvdata * const d =
-            container_of(mtd, struct excite_nand_drvdata, board_mtd);
-
-        switch (ctrl) {
-        case NAND_CTRL_CHANGE | NAND_CTRL_CLE:
-                d->tgt = d->regs + EXCITE_NANDFLASH_CMD_BYTE;
-                break;
-        case NAND_CTRL_CHANGE | NAND_CTRL_ALE:
-                d->tgt = d->regs + EXCITE_NANDFLASH_ADDR_BYTE;
-                break;
-        case NAND_CTRL_CHANGE | NAND_NCE:
-                d->tgt = d->regs + EXCITE_NANDFLASH_DATA_BYTE;
-                break;
-        }
-
-        if (cmd != NAND_CMD_NONE)
-                __raw_writeb(cmd, d->tgt);
-}
-
-/* Return 0 if flash is busy, 1 if ready */
-static int excite_nand_devready(struct mtd_info *mtd)
-{
-        struct excite_nand_drvdata * const drvdata =
-            container_of(mtd, struct excite_nand_drvdata, board_mtd);
-
-        return __raw_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS_BYTE);
-}
-
-/*
- * Called by device layer to remove the driver.
- * The binding to the mtd and all allocated
- * resources are released.
- */
-static int __devexit excite_nand_remove(struct platform_device *dev)
-{
-        struct excite_nand_drvdata * const this = platform_get_drvdata(dev);
-
-        platform_set_drvdata(dev, NULL);
-
-        if (unlikely(!this)) {
-                printk(KERN_ERR "%s: called %s without private data!!",
-                       module_id, __func__);
-                return -EINVAL;
-        }
-
-        /* first thing we need to do is release our mtd
-         * then go through freeing the resource used
-         */
-        nand_release(&this->board_mtd);
-
-        /* free the common resources */
-        iounmap(this->regs);
-        kfree(this);
-
-        DEBUG(MTD_DEBUG_LEVEL1, "%s: removed\n", module_id);
-        return 0;
-}
-
-/*
- * Called by device layer when it finds a device matching
- * one our driver can handle. This code checks to see if
- * it can allocate all necessary resources then calls the
- * nand layer to look for devices.
-*/
-static int __init excite_nand_probe(struct platform_device *pdev)
-{
-        struct excite_nand_drvdata *drvdata;    /* private driver data */
-        struct nand_chip *board_chip;   /* private flash chip data */
-        struct mtd_info *board_mtd;     /* mtd info for this board */
-        int scan_res;
-
-        drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
-        if (unlikely(!drvdata)) {
-                printk(KERN_ERR "%s: no memory for drvdata\n",
-                       module_id);
-                return -ENOMEM;
-        }
-
-        /* bind private data into driver */
-        platform_set_drvdata(pdev, drvdata);
-
-        /* allocate and map the resource */
-        drvdata->regs =
-                excite_nand_map_regs(pdev, EXCITE_NANDFLASH_RESOURCE_REGS);
-
-        if (unlikely(!drvdata->regs)) {
-                printk(KERN_ERR "%s: cannot reserve register region\n",
-                       module_id);
-                kfree(drvdata);
-                return -ENXIO;
-        }
-        
-        drvdata->tgt = drvdata->regs + EXCITE_NANDFLASH_DATA_BYTE;
-
-        /* initialise our chip */
-        board_chip = &drvdata->board_chip;
-        board_chip->IO_ADDR_R = board_chip->IO_ADDR_W =
-                drvdata->regs + EXCITE_NANDFLASH_DATA_BYTE;
-        board_chip->cmd_ctrl = excite_nand_control;
-        board_chip->dev_ready = excite_nand_devready;
-        board_chip->chip_delay = 25;
-        board_chip->ecc.mode = NAND_ECC_SOFT;
-
-        /* link chip to mtd */
-        board_mtd = &drvdata->board_mtd;
-        board_mtd->priv = board_chip;
-
-        DEBUG(MTD_DEBUG_LEVEL2, "%s: device scan\n", module_id);
-        scan_res = nand_scan(&drvdata->board_mtd, 1);
-
-        if (likely(!scan_res)) {
-                DEBUG(MTD_DEBUG_LEVEL2, "%s: register partitions\n", module_id);
-                add_mtd_partitions(&drvdata->board_mtd, partition_info,
-                                   ARRAY_SIZE(partition_info));
-        } else {
-                iounmap(drvdata->regs);
-                kfree(drvdata);
-                printk(KERN_ERR "%s: device scan failed\n", module_id);
-                return -EIO;
-        }
-        return 0;
-}
-
-static struct platform_driver excite_nand_driver = {
-        .driver = {
-                .name = "excite_nand",
-                .owner          = THIS_MODULE,
-        },
-        .probe = excite_nand_probe,
-        .remove = __devexit_p(excite_nand_remove)
-};
-
-static int __init excite_nand_init(void)
-{
-        pr_info("Basler eXcite nand flash driver Version "
-                EXCITE_NANDFLASH_VERSION "\n");
-        return platform_driver_register(&excite_nand_driver);
-}
-
-static void __exit excite_nand_exit(void)
-{
-        platform_driver_unregister(&excite_nand_driver);
-}
-
-module_init(excite_nand_init);
-module_exit(excite_nand_exit);
-
-MODULE_AUTHOR("Thomas Koeller <thomas.koeller@baslerweb.com>");
-MODULE_DESCRIPTION("Basler eXcite NAND-Flash driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(EXCITE_NANDFLASH_VERSION)
diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c
index 79fc4530987b..25c5dd03a837 100644
--- a/drivers/mtd/tests/mtd_readtest.c
+++ b/drivers/mtd/tests/mtd_readtest.c
@@ -147,6 +147,10 @@ static int scan_for_bad_eraseblocks(void)
         }
         memset(bbt, 0 , ebcnt);
 
+        /* NOR flash does not implement block_isbad */
+        if (mtd->block_isbad == NULL)
+                return 0;
+
         printk(PRINT_PREF "scanning for bad eraseblocks\n");
         for (i = 0; i < ebcnt; ++i) {
                 bbt[i] = is_block_bad(i) ? 1 : 0;
@@ -184,7 +188,7 @@ static int __init mtd_readtest_init(void)
         tmp = mtd->size;
         do_div(tmp, mtd->erasesize);
         ebcnt = tmp;
-        pgcnt = mtd->erasesize / mtd->writesize;
+        pgcnt = mtd->erasesize / pgsize;
 
         printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
                "page size %u, count of eraseblocks %u, pages per "
diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c
index 141363a7e805..7fbb51d4eabe 100644
--- a/drivers/mtd/tests/mtd_speedtest.c
+++ b/drivers/mtd/tests/mtd_speedtest.c
@@ -301,6 +301,10 @@ static int scan_for_bad_eraseblocks(void)
         }
         memset(bbt, 0 , ebcnt);
 
+        /* NOR flash does not implement block_isbad */
+        if (mtd->block_isbad == NULL)
+                goto out;
+
         printk(PRINT_PREF "scanning for bad eraseblocks\n");
         for (i = 0; i < ebcnt; ++i) {
                 bbt[i] = is_block_bad(i) ? 1 : 0;
@@ -309,6 +313,7 @@ static int scan_for_bad_eraseblocks(void)
                 cond_resched();
         }
         printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+out:
         goodebcnt = ebcnt - bad;
         return 0;
 }
@@ -340,7 +345,7 @@ static int __init mtd_speedtest_init(void)
         tmp = mtd->size;
         do_div(tmp, mtd->erasesize);
         ebcnt = tmp;
-        pgcnt = mtd->erasesize / mtd->writesize;
+        pgcnt = mtd->erasesize / pgsize;
 
         printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
                "page size %u, count of eraseblocks %u, pages per "
diff --git a/drivers/mtd/tests/mtd_stresstest.c b/drivers/mtd/tests/mtd_stresstest.c
index 63920476b57a..a99d3cd737d8 100644
--- a/drivers/mtd/tests/mtd_stresstest.c
+++ b/drivers/mtd/tests/mtd_stresstest.c
@@ -227,6 +227,10 @@ static int scan_for_bad_eraseblocks(void)
         }
         memset(bbt, 0 , ebcnt);
 
+        /* NOR flash does not implement block_isbad */
+        if (mtd->block_isbad == NULL)
+                return 0;
+
         printk(PRINT_PREF "scanning for bad eraseblocks\n");
         for (i = 0; i < ebcnt; ++i) {
                 bbt[i] = is_block_bad(i) ? 1 : 0;
@@ -265,7 +269,7 @@ static int __init mtd_stresstest_init(void)
         tmp = mtd->size;
         do_div(tmp, mtd->erasesize);
         ebcnt = tmp;
-        pgcnt = mtd->erasesize / mtd->writesize;
+        pgcnt = mtd->erasesize / pgsize;
 
         printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
                "page size %u, count of eraseblocks %u, pages per "
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index f237ddbb2713..111ea41c4ecd 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -853,7 +853,6 @@ static long ubi_cdev_ioctl(struct file *file, unsigned int cmd,
                         break;
                 }
 
-                req.name[req.name_len] = '\0';
                 err = verify_mkvol_req(ubi, &req);
                 if (err)
                         break;
diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index 277786ebaa2c..1361574e2b00 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -291,8 +291,7 @@ EXPORT_SYMBOL_GPL(ubi_open_volume_nm);
  */
 struct ubi_volume_desc *ubi_open_volume_path(const char *pathname, int mode)
 {
-        int error, ubi_num, vol_id;
-        struct ubi_volume_desc *ret;
+        int error, ubi_num, vol_id, mod;
         struct inode *inode;
         struct path path;
 
@@ -306,16 +305,16 @@ struct ubi_volume_desc *ubi_open_volume_path(const char *pathname, int mode)
                 return ERR_PTR(error);
 
         inode = path.dentry->d_inode;
+        mod = inode->i_mode;
         ubi_num = ubi_major2num(imajor(inode));
         vol_id = iminor(inode) - 1;
+        path_put(&path);
 
+        if (!S_ISCHR(mod))
+                return ERR_PTR(-EINVAL);
         if (vol_id >= 0 && ubi_num >= 0)
-                ret = ubi_open_volume(ubi_num, vol_id, mode);
-        else
-                ret = ERR_PTR(-ENODEV);
-
-        path_put(&path);
-        return ret;
+                return ubi_open_volume(ubi_num, vol_id, mode);
+        return ERR_PTR(-ENODEV);
 }
 EXPORT_SYMBOL_GPL(ubi_open_volume_path);
 
diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c
index c1d7b880c795..425bf5a3edd4 100644
--- a/drivers/mtd/ubi/upd.c
+++ b/drivers/mtd/ubi/upd.c
@@ -155,6 +155,7 @@ int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol,
                 if (err)
                         return err;
                 vol->updating = 0;
+                return 0;
         }
 
         vol->upd_buf = vmalloc(ubi->leb_size);
diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
index 1afc61e7455d..40044028d682 100644
--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -566,6 +566,7 @@ static int init_volumes(struct ubi_device *ubi, const struct ubi_scan_info *si,
                 vol->reserved_pebs = be32_to_cpu(vtbl[i].reserved_pebs);
                 vol->alignment = be32_to_cpu(vtbl[i].alignment);
                 vol->data_pad = be32_to_cpu(vtbl[i].data_pad);
+                vol->upd_marker = vtbl[i].upd_marker;
                 vol->vol_type = vtbl[i].vol_type == UBI_VID_DYNAMIC ?
                                         UBI_DYNAMIC_VOLUME : UBI_STATIC_VOLUME;
                 vol->name_len = be16_to_cpu(vtbl[i].name_len);