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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2011-12-29 10:45:04 +0200
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-01-09 18:26:18 +0000
commite2936b2af5562c8c66060e2bc2ae2e209d0acd3d (patch)
tree99af09f8049f9fd76abca6d630ff333b169ab25f /include/linux/mtd
parent27c151a5e52efaa46d0938984f2ef591bdcb6d5b (diff)
mtd: do not use mtd->lock_user_prot_reg directly
Instead, check the -EOPNOTSUPP return code of 'mtd_lock_user_prot_reg()'. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include/linux/mtd')
-rw-r--r--include/linux/mtd/mtd.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 7cd56d2b9419..a994129ede55 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -389,6 +389,8 @@ static inline int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to,
static inline int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len)
{
+ if (!mtd->lock_user_prot_reg)
+ return -EOPNOTSUPP;
return mtd->lock_user_prot_reg(mtd, from, len);
}