diff options
| author | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2011-12-28 16:50:34 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-01-09 19:26:14 +0100 |
| commit | dac2639f9833e858139d7e07f6ee45fb2191a9f2 (patch) | |
| tree | 8927b0959d8415e419f321a8b43974ed8834b680 | |
| parent | mtd: mtdoops: do not use mtd->panic_write directly (diff) | |
| download | linux-dac2639f9833e858139d7e07f6ee45fb2191a9f2.tar.xz linux-dac2639f9833e858139d7e07f6ee45fb2191a9f2.zip | |
mtd: do not use mtd->read_oob directly
Instead of checking whether 'mtd->read_oob' is defined, just call
'mtd_read_oob()' and handle the '-EOPNOTSUPP' error which will be returned
if the function is undefined.
Additionally, make 'mtd_write_oob()' return '-EOPNOTSUPP' if the function
is undefined.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | drivers/mtd/mtdchar.c | 9 | ||||
| -rw-r--r-- | include/linux/mtd/mtd.h | 4 |
2 files changed, 6 insertions, 7 deletions
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 55f0961103a7..287ff0d35848 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -452,13 +452,8 @@ static int mtdchar_readoob(struct file *file, struct mtd_info *mtd, if (length > 4096) return -EINVAL; - if (!mtd->read_oob) - ret = -EOPNOTSUPP; - else - ret = access_ok(VERIFY_WRITE, ptr, - length) ? 0 : -EFAULT; - if (ret) - return ret; + if (!access_ok(VERIFY_WRITE, ptr, length)) + return -EFAULT; ops.ooblen = length; ops.ooboffs = start & (mtd->writesize - 1); diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index b72964049cdc..721a63ffeb96 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -320,6 +320,8 @@ static inline int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) { ops->retlen = ops->oobretlen = 0; + if (!mtd->read_oob) + return -EOPNOTSUPP; return mtd->read_oob(mtd, from, ops); } @@ -327,6 +329,8 @@ static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) { ops->retlen = ops->oobretlen = 0; + if (!mtd->write_oob) + return -EOPNOTSUPP; return mtd->write_oob(mtd, to, ops); } |