Return successfully when mtd_peb_read() or mtd_peb_write() is passed a
zero length so that the callers do not have to handle this case.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
drivers/mtd/peb.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/peb.c b/drivers/mtd/peb.c
index 8443ed86bc..a17d42885e 100644
--- a/drivers/mtd/peb.c
+++ b/drivers/mtd/peb.c
@@ -205,10 +205,12 @@ int mtd_peb_read(struct mtd_info *mtd, void *buf, int pnum, int offset,
return -EINVAL;
if (offset < 0 || offset + len > mtd->erasesize)
return -EINVAL;
- if (len <= 0)
+ if (len < 0)
return -EINVAL;
if (mtd_peb_is_bad(mtd, pnum))
return -EINVAL;
+ if (!len)
+ return 0;
/* Deliberately corrupt the buffer */
*((uint8_t *)buf) ^= 0xFF;
@@ -388,12 +390,14 @@ int mtd_peb_write(struct mtd_info *mtd, const void *buf, int pnum, int offset,
return -EINVAL;
if (offset < 0 || offset + len > mtd->erasesize)
return -EINVAL;
- if (len <= 0)
+ if (len < 0)
return -EINVAL;
if (len % (mtd->writesize >> mtd->subpage_sft))
return -EINVAL;
if (mtd_peb_is_bad(mtd, pnum))
return -EINVAL;
+ if (!len)
+ return 0;
if (mtd_peb_emulate_write_failure()) {
dev_err(&mtd->dev, "Cannot write %d bytes to PEB %d:%d (emulated)\n",
--
2.30.2
