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>

1 files changed, 0 insertions, 12 deletions

diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c
index b80cb5b5ebbd..2238ab916a06 100644
--- a/drivers/mtd/devices/spear_smi.c
+++ b/drivers/mtd/devices/spear_smi.c
@@ -510,10 +510,6 @@ static int spear_mtd_erase(struct mtd_info *mtd, struct erase_info *e_info)
         if (!flash || !dev)
                 return -ENODEV;
 
-        /* do not allow erase past end of device */
-        if (e_info->addr + e_info->len > flash->mtd.size)
-                return -EINVAL;
-
         bank = flash->bank;
         if (bank > dev->num_flashes - 1) {
                 dev_err(&dev->pdev->dev, "Invalid Bank Num");
@@ -573,10 +569,6 @@ static int spear_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
         if (!flash || !dev)
                 return -ENODEV;
 
-        /* do not allow reads past end of device */
-        if (from + len > flash->mtd.size)
-                return -EINVAL;
-
         if (flash->bank > dev->num_flashes - 1) {
                 dev_err(&dev->pdev->dev, "Invalid Bank Num");
                 return -EINVAL;
@@ -678,10 +670,6 @@ static int spear_mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
         if (!len)
                 return 0;
 
-        /* do not allow write past end of page */
-        if (to + len > flash->mtd.size)
-                return -EINVAL;
-
         if (flash->bank > dev->num_flashes - 1) {
                 dev_err(&dev->pdev->dev, "Invalid Bank Num");
                 return -EINVAL;