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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-02-03 16:23:52 +0200
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-03-27 00:28:18 +0100
commit5def48982b778aaebe201f85af7170b7d0a6619f (patch)
tree2920f1b524698877fab8521ee04349a5e285e47d /drivers/mtd/onenand
parent8273a0c911d8e068297ef70aa7241ee78db4c712 (diff)
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/onenand')
-rw-r--r--drivers/mtd/onenand/onenand_base.c20
1 files changed, 0 insertions, 20 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 914c49bdf2b..9c6445d372c 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1756,13 +1756,6 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
/* Initialize retlen, in case of early exit */
*retlen = 0;
- /* Do not allow writes past end of device */
- if (unlikely((to + len) > mtd->size)) {
- printk(KERN_ERR "%s: Attempt write to past end of device\n",
- __func__);
- return -EINVAL;
- }
-
/* Reject writes, which are not page aligned */
if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) {
printk(KERN_ERR "%s: Attempt to write not page aligned data\n",
@@ -1890,13 +1883,6 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
ops->retlen = 0;
ops->oobretlen = 0;
- /* Do not allow writes past end of device */
- if (unlikely((to + len) > mtd->size)) {
- printk(KERN_ERR "%s: Attempt write to past end of device\n",
- __func__);
- return -EINVAL;
- }
-
/* Reject writes, which are not page aligned */
if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) {
printk(KERN_ERR "%s: Attempt to write not page aligned data\n",
@@ -2493,12 +2479,6 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
(unsigned long long)instr->addr,
(unsigned long long)instr->len);
- /* Do not allow erase past end of device */
- if (unlikely((len + addr) > mtd->size)) {
- printk(KERN_ERR "%s: Erase past end of device\n", __func__);
- return -EINVAL;
- }
-
if (FLEXONENAND(this)) {
/* Find the eraseregion of this address */
int i = flexonenand_region(mtd, addr);