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-rw-r--r--drivers/mtd/mtdchar.c26
-rw-r--r--drivers/mtd/mtdconcat.c6
-rw-r--r--include/linux/mtd/mtd.h2
3 files changed, 14 insertions, 20 deletions
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index c501eec17b38..55f0961103a7 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -1124,25 +1124,21 @@ static unsigned long mtdchar_get_unmapped_area(struct file *file,
{
struct mtd_file_info *mfi = file->private_data;
struct mtd_info *mtd = mfi->mtd;
+ unsigned long offset;
+ int ret;
- if (mtd->get_unmapped_area) {
- unsigned long offset;
-
- if (addr != 0)
- return (unsigned long) -EINVAL;
-
- if (len > mtd->size || pgoff >= (mtd->size >> PAGE_SHIFT))
- return (unsigned long) -EINVAL;
+ if (addr != 0)
+ return (unsigned long) -EINVAL;
- offset = pgoff << PAGE_SHIFT;
- if (offset > mtd->size - len)
- return (unsigned long) -EINVAL;
+ if (len > mtd->size || pgoff >= (mtd->size >> PAGE_SHIFT))
+ return (unsigned long) -EINVAL;
- return mtd_get_unmapped_area(mtd, len, offset, flags);
- }
+ offset = pgoff << PAGE_SHIFT;
+ if (offset > mtd->size - len)
+ return (unsigned long) -EINVAL;
- /* can't map directly */
- return (unsigned long) -ENOSYS;
+ ret = mtd_get_unmapped_area(mtd, len, offset, flags);
+ return ret == -EOPNOTSUPP ? -ENOSYS : ret;
}
#endif
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index f694b51e7856..9119f76f87ff 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -726,11 +726,7 @@ static unsigned long concat_get_unmapped_area(struct mtd_info *mtd,
if (offset + len > subdev->size)
return (unsigned long) -EINVAL;
- if (subdev->get_unmapped_area)
- return mtd_get_unmapped_area(subdev, len, offset,
- flags);
-
- break;
+ return mtd_get_unmapped_area(subdev, len, offset, flags);
}
return (unsigned long) -ENOSYS;
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index b355a83e7cc2..2c2a92247e5a 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -280,6 +280,8 @@ static inline unsigned long mtd_get_unmapped_area(struct mtd_info *mtd,
unsigned long offset,
unsigned long flags)
{
+ if (!mtd->get_unmapped_area)
+ return -EOPNOTSUPP;
return mtd->get_unmapped_area(mtd, len, offset, flags);
}