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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-02-03 15:23:52 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-03-27 01:28:18 +0200
commit5def48982b778aaebe201f85af7170b7d0a6619f (patch)
tree2920f1b524698877fab8521ee04349a5e285e47d /drivers/mtd/devices/lart.c
parentmtd: add offset and length checks to the API function (diff)
downloadlinux-5def48982b778aaebe201f85af7170b7d0a6619f.tar.xz
linux-5def48982b778aaebe201f85af7170b7d0a6619f.zip
mtd: do not duplicate length and offset checks in drivers
We already verify that offset and length are within the MTD device size in the MTD API functions. Let's remove the duplicated checks in drivers. This patch only affects the following API's: 'mtd_erase()' 'mtd_point()' 'mtd_unpoint()' 'mtd_get_unmapped_area()' 'mtd_read()' 'mtd_write()' 'mtd_panic_write()' 'mtd_lock()' 'mtd_unlock()' 'mtd_is_locked()' 'mtd_block_isbad()' 'mtd_block_markbad()' This patch adds a bit of noise by removing too sparse empty lines, but this is not too bad. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/devices/lart.c')
-rw-r--r--drivers/mtd/devices/lart.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c
index 6d6502c2ec35..c9ae60112a90 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.
@@ -442,7 +439,6 @@ static int flash_read (struct mtd_info *mtd,loff_t from,size_t len,size_t *retle
/* sanity checks */
if (!len) return (0);
- if (from + len > mtd->size) return (-EINVAL);
/* we always read len bytes */
*retlen = len;
@@ -526,7 +522,6 @@ static int flash_write (struct mtd_info *mtd,loff_t to,size_t len,size_t *retlen
/* 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))