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 <[email protected]> --- 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
