[U-Boot] [PATCH] fs/fat: Correct blk_dread() return value check

The function blk_dread will return -ENOSYS on failure or on success the number of blocks read, which must be the number asked to read (otherwise it failed somewhere). Correct this check.

Signed-off-by: Tom Rini trini@konsulko.com --- fs/fat/fat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fat/fat.c b/fs/fat/fat.c index 9ad18f96ff07..465a6875edf5 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -54,7 +54,7 @@ static int disk_read(__u32 block, __u32 nr_blocks, void *buf)

ret = blk_dread(cur_dev, cur_part_info.start + block, nr_blocks, buf);

- if (nr_blocks && ret == 0) + if (ret != nr_blocks) return -1;

return ret;