diff options
| author | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2012-02-06 15:27:43 +0400 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-03-27 03:32:19 +0400 |
| commit | bcb1d238716d138c9e16347fc32b3c1ae006339e (patch) | |
| tree | ccb7a9aea7b77481fa3474124218521e0c32de82 /drivers/mtd/devices/mtd_dataflash.c | |
| parent | 0dd5235f51fb0eb0b8cef3fed35be39b8a06d7bd (diff) | |
| download | linux-bcb1d238716d138c9e16347fc32b3c1ae006339e.tar.xz | |
mtd: move zero length verification to MTD API functions
In many places in drivers we verify for the zero length, but this is very
inconsistent across drivers. This is obviously the right thing to do, though.
This patch moves the check to the MTD API functions instead and removes a lot
of duplication.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/devices/mtd_dataflash.c')
| -rw-r--r-- | drivers/mtd/devices/mtd_dataflash.c | 10 |
1 files changed, 0 insertions, 10 deletions
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); |