mtd: introduce mtd_has_oob helper

We are working in the direction of making sure that MTD clients to not
use 'mtd->func' pointers directly. In some places we want to know if
OOB operations are supported by an MTD device. Introduce 'mtd_has_oob()'
helper for these purposes.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c
index 4ec2af7fb845..072ed5970e2f 100644
--- a/drivers/mtd/sm_ftl.c
+++ b/drivers/mtd/sm_ftl.c
@@ -645,8 +645,8 @@ int sm_get_media_info(struct sm_ftl *ftl, struct mtd_info *mtd)
         if (!ftl->smallpagenand && mtd->oobsize < SM_OOB_SIZE)
                 return -ENODEV;
 
-        /* We use these functions for IO */
-        if (!mtd->read_oob || !mtd->write_oob)
+        /* We use OOB */
+        if (!mtd_has_oob(mtd))
                 return -ENODEV;
 
         /* Find geometry information */