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fs/fat: Correct blk_dread() return value check

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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>
This commit is contained in:
Tom Rini 2017-08-14 21:02:08 -04:00
parent 9585dd3fff
commit 42a9f147d8
1 changed files with 1 additions and 1 deletions
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2
fs/fat/fat.c
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@ -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;