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Diffstat (limited to 'drivers/mtd/devices')
-rw-r--r--drivers/mtd/devices/block2mtd.c3
-rw-r--r--drivers/mtd/devices/lart.c3
-rw-r--r--drivers/mtd/devices/m25p80.c12
-rw-r--r--drivers/mtd/devices/mtd_dataflash.c10
-rw-r--r--drivers/mtd/devices/spear_smi.c6
-rw-r--r--drivers/mtd/devices/sst25l.c8
6 files changed, 0 insertions, 42 deletions
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index ba2d74b01c7e..a4a80b742e65 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -178,9 +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;
-
mutex_lock(&dev->write_mutex);
err = _block2mtd_write(dev, buf, to, len, retlen);
mutex_unlock(&dev->write_mutex);
diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c
index 6fb8dba76959..82bd00af5cc3 100644
--- a/drivers/mtd/devices/lart.c
+++ b/drivers/mtd/devices/lart.c
@@ -437,9 +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);
-
/* we always read len bytes */
*retlen = len;
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 45cc4a1ae5b0..1924d247c1cb 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -346,10 +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;
-
spi_message_init(&m);
memset(t, 0, (sizeof t));
@@ -408,10 +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);
- /* sanity checks */
- if (!len)
- return(0);
-
spi_message_init(&m);
memset(t, 0, (sizeof t));
@@ -495,10 +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);
- /* sanity checks */
- if (!len)
- return 0;
-
spi_message_init(&m);
memset(t, 0, (sizeof t));
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index c76b4464e8b9..928fb0e6d73a 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -249,10 +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));
- /* Sanity checks */
- if (!len)
- return 0;
-
/* Calculate flash page/byte address */
addr = (((unsigned)from / priv->page_size) << priv->page_offset)
+ ((unsigned)from % priv->page_size);
@@ -321,10 +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));
- /* Sanity checks */
- if (!len)
- return 0;
-
spi_message_init(&msg);
x[0].tx_buf = command = priv->command;
@@ -479,8 +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);
diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c
index 2cdbcc65b39f..f45dd37b771e 100644
--- a/drivers/mtd/devices/spear_smi.c
+++ b/drivers/mtd/devices/spear_smi.c
@@ -563,9 +563,6 @@ static int spear_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
u32 ctrlreg1, val;
int ret;
- if (!len)
- return 0;
-
if (!flash || !dev)
return -ENODEV;
@@ -662,9 +659,6 @@ static int spear_mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
if (!flash || !dev)
return -ENODEV;
- if (!len)
- return 0;
-
if (flash->bank > dev->num_flashes - 1) {
dev_err(&dev->pdev->dev, "Invalid Bank Num");
return -EINVAL;
diff --git a/drivers/mtd/devices/sst25l.c b/drivers/mtd/devices/sst25l.c
index 5c2613c99e4a..51b2df33b8e9 100644
--- a/drivers/mtd/devices/sst25l.c
+++ b/drivers/mtd/devices/sst25l.c
@@ -220,10 +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;
-
spi_message_init(&message);
memset(&transfer, 0, sizeof(transfer));
@@ -265,10 +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 ((uint32_t)to % mtd->writesize)
return -EINVAL;