commit b2bf96833c5782befc3e7700f791fde754a47b01
author Jens Axboe <jens.axboe@oracle.com> Thu Feb 19 08:50:26 2009 +0100
committer Jens Axboe <jens.axboe@oracle.com> Thu Feb 26 10:45:48 2009 +0100
tree b38745750c948b519e4c46bb9589d3a61c6359f4
parent 169d418b127b98a3e464e9c4b807ad083760f98c

block: fix bogus gcc warning for uninitialized var usage

Newer gcc throw this warning:

        fs/bio.c: In function ?bio_alloc_bioset?:
        fs/bio.c:305: warning: ?p? may be used uninitialized in this function

since it cannot figure out that 'p' is only ever used if 'bs' is non-NULL.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

fs/bio.c

diff --git a/fs/bio.c b/fs/bio.c
index 72ab251..124b95c 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -302,7 +302,7 @@
 struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
 {
 	struct bio *bio = NULL;
-	void *p;
+	void *uninitialized_var(p);
 
 	if (bs) {
 		p = mempool_alloc(bs->bio_pool, gfp_mask);