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Subject[PATCH 1/2] mmc: block: Avoid uninitialized warning in mmc_blk_issue_discard_rq()
Date
With gcc-4.1.2:

mmc/core/block.c: In function ‘mmc_blk_issue_discard_rq’:
mmc/core/block.c:1150: warning: ‘arg’ may be used uninitialized in this function
mmc/core/block.c:1150: warning: ‘nr’ may be used uninitialized in this function
mmc/core/block.c:1150: warning: ‘from’ may be used uninitialized in this function

While this is a false positive, it can be avoided easily by jumping over
the checks for "err" that are always false.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
drivers/mmc/core/block.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index bab3f07b1117ea81..8c0e0833d481cf94 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -1152,7 +1152,7 @@ static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)

if (!mmc_can_erase(card)) {
err = -EOPNOTSUPP;
- goto out;
+ goto fail;
}

from = blk_rq_pos(req);
@@ -1181,6 +1181,7 @@ static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
goto retry;
if (!err)
mmc_blk_reset_success(md, type);
+fail:
blk_end_request(req, err, blk_rq_bytes(req));

return err ? 0 : 1;
--
1.9.1
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