20 files changed, 44 insertions, 52 deletions

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index a92054e945e1..edec457d361d 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -239,7 +239,7 @@ config MTD_NAND_BCM_UMI
         help
           This enables the NAND flash controller on the BCM UMI block.
 
-          No board specfic support is done by this driver, each board
+          No board specific support is done by this driver, each board
           must advertise a platform_device for the driver to attach.
 
 config MTD_NAND_BCM_UMI_HWCS
diff --git a/drivers/mtd/nand/ams-delta.c b/drivers/mtd/nand/ams-delta.c
index a067d090cb31..bc65bf71e1a2 100644
--- a/drivers/mtd/nand/ams-delta.c
+++ b/drivers/mtd/nand/ams-delta.c
@@ -228,7 +228,7 @@ static int __devinit ams_delta_init(struct platform_device *pdev)
                                           AMS_DELTA_LATCH2_NAND_NCE |
                                           AMS_DELTA_LATCH2_NAND_NWP);
 
-        /* Scan to find existance of the device */
+        /* Scan to find existence of the device */
         if (nand_scan(ams_delta_mtd, 1)) {
                 err = -ENXIO;
                 goto out_mtd;
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 6fae04b3fc6d..950646aa4c4b 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -209,22 +209,8 @@ static int atmel_nand_dma_op(struct mtd_info *mtd, void *buf, int len,
         int err = -EIO;
         enum dma_data_direction dir = is_read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
 
-        if (buf >= high_memory) {
-                struct page *pg;
-
-                if (((size_t)buf & PAGE_MASK) !=
-                    ((size_t)(buf + len - 1) & PAGE_MASK)) {
-                        dev_warn(host->dev, "Buffer not fit in one page\n");
-                        goto err_buf;
-                }
-
-                pg = vmalloc_to_page(buf);
-                if (pg == 0) {
-                        dev_err(host->dev, "Failed to vmalloc_to_page\n");
-                        goto err_buf;
-                }
-                p = page_address(pg) + ((size_t)buf & ~PAGE_MASK);
-        }
+        if (buf >= high_memory)
+                goto err_buf;
 
         dma_dev = host->dma_chan->device;
 
@@ -280,7 +266,8 @@ static void atmel_read_buf(struct mtd_info *mtd, u8 *buf, int len)
         struct nand_chip *chip = mtd->priv;
         struct atmel_nand_host *host = chip->priv;
 
-        if (use_dma && len >= mtd->oobsize)
+        if (use_dma && len > mtd->oobsize)
+                /* only use DMA for bigger than oob size: better performances */
                 if (atmel_nand_dma_op(mtd, buf, len, 1) == 0)
                         return;
 
@@ -295,7 +282,8 @@ static void atmel_write_buf(struct mtd_info *mtd, const u8 *buf, int len)
         struct nand_chip *chip = mtd->priv;
         struct atmel_nand_host *host = chip->priv;
 
-        if (use_dma && len >= mtd->oobsize)
+        if (use_dma && len > mtd->oobsize)
+                /* only use DMA for bigger than oob size: better performances */
                 if (atmel_nand_dma_op(mtd, (void *)buf, len, 0) == 0)
                         return;
 
@@ -599,7 +587,10 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
                 nand_chip->options |= NAND_USE_FLASH_BBT;
         }
 
-        if (cpu_has_dma() && use_dma) {
+        if (!cpu_has_dma())
+                use_dma = 0;
+
+        if (use_dma) {
                 dma_cap_mask_t mask;
 
                 dma_cap_zero(mask);
@@ -611,7 +602,8 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
                 }
         }
         if (use_dma)
-                dev_info(host->dev, "Using DMA for NAND access.\n");
+                dev_info(host->dev, "Using %s for DMA transfers.\n",
+                                        dma_chan_name(host->dma_chan));
         else
                 dev_info(host->dev, "No DMA support for NAND access.\n");
 
diff --git a/drivers/mtd/nand/autcpu12.c b/drivers/mtd/nand/autcpu12.c
index 7c95da1f612c..0911cf03db80 100644
--- a/drivers/mtd/nand/autcpu12.c
+++ b/drivers/mtd/nand/autcpu12.c
@@ -176,7 +176,7 @@ static int __init autcpu12_init(void)
          */
         this->options = NAND_USE_FLASH_BBT;
 
-        /* Scan to find existance of the device */
+        /* Scan to find existence of the device */
         if (nand_scan(autcpu12_mtd, 1)) {
                 err = -ENXIO;
                 goto out_ior;
diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c
index 9f1b451005ca..71c35a0b9826 100644
--- a/drivers/mtd/nand/cs553x_nand.c
+++ b/drivers/mtd/nand/cs553x_nand.c
@@ -241,7 +241,7 @@ static int __init cs553x_init_one(int cs, int mmio, unsigned long adr)
         /* Enable the following for a flash based bad block table */
         this->options = NAND_USE_FLASH_BBT | NAND_NO_AUTOINCR;
 
-        /* Scan to find existance of the device */
+        /* Scan to find existence of the device */
         if (nand_scan(new_mtd, 1)) {
                 err = -ENXIO;
                 goto out_ior;
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index 8c8d3c86c0e8..4633f094c510 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -724,7 +724,7 @@ static uint32_t wait_for_irq(struct denali_nand_info *denali, uint32_t irq_mask)
 }
 
 /* This helper function setups the registers for ECC and whether or not
- * the spare area will be transfered. */
+ * the spare area will be transferred. */
 static void setup_ecc_for_xfer(struct denali_nand_info *denali, bool ecc_en,
                                 bool transfer_spare)
 {
@@ -965,7 +965,7 @@ static bool handle_ecc(struct denali_nand_info *denali, uint8_t *buf,
 
                         if (ECC_ERROR_CORRECTABLE(err_correction_info)) {
                                 /* If err_byte is larger than ECC_SECTOR_SIZE,
-                                 * means error happend in OOB, so we ignore
+                                 * means error happened in OOB, so we ignore
                                  * it. It's no need for us to correct it
                                  * err_device is represented the NAND error
                                  * bits are happened in if there are more
@@ -1109,7 +1109,7 @@ static void denali_write_page(struct mtd_info *mtd, struct nand_chip *chip,
 }
 
 /* This is the callback that the NAND core calls to write a page without ECC.
- * raw access is similiar to ECC page writes, so all the work is done in the
+ * raw access is similar to ECC page writes, so all the work is done in the
  * write_page() function above.
  */
 static void denali_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index b7f8de7b2780..96c0b34ba8db 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -137,7 +137,7 @@ static struct rs_control *rs_decoder;
  *
  * Fabrice Bellard figured this out in the old docecc code. I added
  * some comments, improved a minor bit and converted it to make use
- * of the generic Reed-Solomon libary. tglx
+ * of the generic Reed-Solomon library. tglx
  */
 static int doc_ecc_decode(struct rs_control *rs, uint8_t *data, uint8_t *ecc)
 {
@@ -400,7 +400,7 @@ static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr)
         doc200x_hwcontrol(mtd, 0, NAND_CTRL_ALE | NAND_CTRL_CHANGE);
         doc200x_hwcontrol(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
-        /* We cant' use dev_ready here, but at least we wait for the
+        /* We can't' use dev_ready here, but at least we wait for the
          * command to complete
          */
         udelay(50);
@@ -986,7 +986,7 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat,
                 dummy = ReadDOC(docptr, ECCConf);
         }
 
-        /* Error occured ? */
+        /* Error occurred ? */
         if (dummy & 0x80) {
                 for (i = 0; i < 6; i++) {
                         if (DoC_is_MillenniumPlus(doc))
@@ -1160,7 +1160,7 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, struct mtd_partitio
         /* NOTE: The lines below modify internal variables of the NAND and MTD
            layers; variables with have already been configured by nand_scan.
            Unfortunately, we didn't know before this point what these values
-           should be.  Thus, this code is somewhat dependant on the exact
+           should be.  Thus, this code is somewhat dependent on the exact
            implementation of the NAND layer.  */
         if (mh->UnitSizeFactor != 0xff) {
                 this->bbt_erase_shift += (0xff - mh->UnitSizeFactor);
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index 7a13d42cbabd..537e380b8dcb 100644
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -59,7 +59,7 @@ struct fsl_elbc_mtd {
         unsigned int fmr;       /* FCM Flash Mode Register value     */
 };
 
-/* Freescale eLBC FCM controller infomation */
+/* Freescale eLBC FCM controller information */
 
 struct fsl_elbc_fcm_ctrl {
         struct nand_hw_control controller;
diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c
index 205b10b9f9b9..0d45ef3883e8 100644
--- a/drivers/mtd/nand/fsmc_nand.c
+++ b/drivers/mtd/nand/fsmc_nand.c
@@ -335,7 +335,7 @@ static void fsmc_enable_hwecc(struct mtd_info *mtd, int mode)
 
 /*
  * fsmc_read_hwecc_ecc4 - Hardware ECC calculator for ecc4 option supported by
- * FSMC. ECC is 13 bytes for 512 bytes of data (supports error correction upto
+ * FSMC. ECC is 13 bytes for 512 bytes of data (supports error correction up to
  * max of 8-bits)
  */
 static int fsmc_read_hwecc_ecc4(struct mtd_info *mtd, const uint8_t *data,
@@ -381,7 +381,7 @@ static int fsmc_read_hwecc_ecc4(struct mtd_info *mtd, const uint8_t *data,
 
 /*
  * fsmc_read_hwecc_ecc1 - Hardware ECC calculator for ecc1 option supported by
- * FSMC. ECC is 3 bytes for 512 bytes of data (supports error correction upto
+ * FSMC. ECC is 3 bytes for 512 bytes of data (supports error correction up to
  * max of 1-bit)
  */
 static int fsmc_read_hwecc_ecc1(struct mtd_info *mtd, const uint8_t *data,
@@ -408,10 +408,10 @@ static int fsmc_read_hwecc_ecc1(struct mtd_info *mtd, const uint8_t *data,
  * @buf:        buffer to store read data
  * @page:       page number to read
  *
- * This routine is needed for fsmc verison 8 as reading from NAND chip has to be
+ * This routine is needed for fsmc version 8 as reading from NAND chip has to be
  * performed in a strict sequence as follows:
  * data(512 byte) -> ecc(13 byte)
- * After this read, fsmc hardware generates and reports error data bits(upto a
+ * After this read, fsmc hardware generates and reports error data bits(up to a
  * max of 8 bits)
  */
 static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
@@ -686,7 +686,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
         }
 
         /*
-         * Scan to find existance of the device
+         * Scan to find existence of the device
          */
         if (nand_scan_ident(&host->mtd, 1, NULL)) {
                 ret = -ENXIO;
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 85cfc061d41c..c54a4cbac6bc 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -1582,7 +1582,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
 }
 
 /**
- * nand_read - [MTD Interface] MTD compability function for nand_do_read_ecc
+ * nand_read - [MTD Interface] MTD compatibility function for nand_do_read_ecc
  * @mtd:        MTD device structure
  * @from:       offset to read from
  * @len:        number of bytes to read
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index a1e8b30078d9..af46428286fe 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -945,7 +945,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc
                 rd2 = NULL;
                 /* Per chip or per device ? */
                 chipsel = (td->options & NAND_BBT_PERCHIP) ? i : -1;
-                /* Mirrored table avilable ? */
+                /* Mirrored table available ? */
                 if (md) {
                         if (td->pages[i] == -1 && md->pages[i] == -1) {
                                 writeops = 0x03;
diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index 213181be0d9a..893d95bfea48 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -162,7 +162,7 @@ MODULE_PARM_DESC(bitflips,       "Maximum number of random bit flips per page (z
 MODULE_PARM_DESC(gravepages,     "Pages that lose data [: maximum reads (defaults to 3)]"
                                  " separated by commas e.g. 1401:2 means page 1401"
                                  " can be read only twice before failing");
-MODULE_PARM_DESC(rptwear,        "Number of erases inbetween reporting wear, if not zero");
+MODULE_PARM_DESC(rptwear,        "Number of erases between reporting wear, if not zero");
 MODULE_PARM_DESC(overridesize,   "Specifies the NAND Flash size overriding the ID bytes. "
                                  "The size is specified in erase blocks and as the exponent of a power of two"
                                  " e.g. 5 means a size of 32 erase blocks");
diff --git a/drivers/mtd/nand/nomadik_nand.c b/drivers/mtd/nand/nomadik_nand.c
index 8c0b69375224..a045a4a581b6 100644
--- a/drivers/mtd/nand/nomadik_nand.c
+++ b/drivers/mtd/nand/nomadik_nand.c
@@ -151,7 +151,7 @@ static int nomadik_nand_probe(struct platform_device *pdev)
         nand->options = pdata->options;
 
         /*
-         * Scan to find existance of the device
+         * Scan to find existence of the device
          */
         if (nand_scan(&host->mtd, 1)) {
                 ret = -ENXIO;
diff --git a/drivers/mtd/nand/pasemi_nand.c b/drivers/mtd/nand/pasemi_nand.c
index 59efa829ef24..20bfe5f15afd 100644
--- a/drivers/mtd/nand/pasemi_nand.c
+++ b/drivers/mtd/nand/pasemi_nand.c
@@ -157,7 +157,7 @@ static int __devinit pasemi_nand_probe(struct platform_device *ofdev)
         /* Enable the following for a flash based bad block table */
         chip->options = NAND_USE_FLASH_BBT | NAND_NO_AUTOINCR;
 
-        /* Scan to find existance of the device */
+        /* Scan to find existence of the device */
         if (nand_scan(pasemi_nand_mtd, 1)) {
                 err = -ENXIO;
                 goto out_lpc;
diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c
index 317aff428e42..caf5a736340a 100644
--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -95,7 +95,7 @@ static int __devinit plat_nand_probe(struct platform_device *pdev)
                         goto out;
         }
 
-        /* Scan to find existance of the device */
+        /* Scan to find existence of the device */
         if (nand_scan(&data->mtd, pdata->chip.nr_chips)) {
                 err = -ENXIO;
                 goto out;
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index ab7f4c33ced6..ff0701276d65 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -184,7 +184,7 @@ struct pxa3xx_nand_info {
 
 static int use_dma = 1;
 module_param(use_dma, bool, 0444);
-MODULE_PARM_DESC(use_dma, "enable DMA for data transfering to/from NAND HW");
+MODULE_PARM_DESC(use_dma, "enable DMA for data transferring to/from NAND HW");
 
 /*
  * Default NAND flash controller configuration setup by the
diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c
index 6322d1fb5d62..cae2e013c986 100644
--- a/drivers/mtd/nand/r852.c
+++ b/drivers/mtd/nand/r852.c
@@ -185,7 +185,7 @@ static void r852_do_dma(struct r852_device *dev, uint8_t *buf, int do_read)
 
         dbg_verbose("doing dma %s ", do_read ? "read" : "write");
 
-        /* Set intial dma state: for reading first fill on board buffer,
+        /* Set initial dma state: for reading first fill on board buffer,
           from device, for writes first fill the buffer  from memory*/
         dev->dma_state = do_read ? DMA_INTERNAL : DMA_MEMORY;
 
@@ -766,7 +766,7 @@ static irqreturn_t r852_irq(int irq, void *data)
                 ret = IRQ_HANDLED;
                 dev->card_detected = !!(card_status & R852_CARD_IRQ_INSERT);
 
-                /* we shouldn't recieve any interrupts if we wait for card
+                /* we shouldn't receive any interrupts if we wait for card
                         to settle */
                 WARN_ON(dev->card_unstable);
 
@@ -794,13 +794,13 @@ static irqreturn_t r852_irq(int irq, void *data)
                 ret = IRQ_HANDLED;
 
                 if (dma_status & R852_DMA_IRQ_ERROR) {
-                        dbg("recieved dma error IRQ");
+                        dbg("received dma error IRQ");
                         r852_dma_done(dev, -EIO);
                         complete(&dev->dma_done);
                         goto out;
                 }
 
-                /* recieved DMA interrupt out of nowhere? */
+                /* received DMA interrupt out of nowhere? */
                 WARN_ON_ONCE(dev->dma_stage == 0);
 
                 if (dev->dma_stage == 0)
@@ -960,7 +960,7 @@ int  r852_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
                 &dev->card_detect_work, 0);
 
 
-        printk(KERN_NOTICE DRV_NAME ": driver loaded succesfully\n");
+        printk(KERN_NOTICE DRV_NAME ": driver loaded successfully\n");
         return 0;
 
 error10:
diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index 546c2f0eb2e8..81bbb5ee148d 100644
--- a/drivers/mtd/nand/sh_flctl.c
+++ b/drivers/mtd/nand/sh_flctl.c
@@ -78,7 +78,7 @@ static void start_translation(struct sh_flctl *flctl)
 
 static void timeout_error(struct sh_flctl *flctl, const char *str)
 {
-        dev_err(&flctl->pdev->dev, "Timeout occured in %s\n", str);
+        dev_err(&flctl->pdev->dev, "Timeout occurred in %s\n", str);
 }
 
 static void wait_completion(struct sh_flctl *flctl)
diff --git a/drivers/mtd/nand/sm_common.c b/drivers/mtd/nand/sm_common.c
index 4a8f367c295c..57cc80cd01a3 100644
--- a/drivers/mtd/nand/sm_common.c
+++ b/drivers/mtd/nand/sm_common.c
@@ -121,7 +121,7 @@ int sm_register_device(struct mtd_info *mtd, int smartmedia)
         if (ret)
                 return ret;
 
-        /* Bad block marker postion */
+        /* Bad block marker position */
         chip->badblockpos = 0x05;
         chip->badblockbits = 7;
         chip->block_markbad = sm_block_markbad;
diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c
index 38fb16771f85..14c578707824 100644
--- a/drivers/mtd/nand/tmio_nand.c
+++ b/drivers/mtd/nand/tmio_nand.c
@@ -4,7 +4,7 @@
  * Slightly murky pre-git history of the driver:
  *
  * Copyright (c) Ian Molton 2004, 2005, 2008
- *    Original work, independant of sharps code. Included hardware ECC support.
+ *    Original work, independent of sharps code. Included hardware ECC support.
  *    Hard ECC did not work for writes in the early revisions.
  * Copyright (c) Dirk Opfer 2005.
  *    Modifications developed from sharps code but