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virtio-blk: fix NULL checking in virtblk_alloc_req() 

Smatch complains about the inconsistent NULL checking here.  Fix it to
return NULL on failure.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (fixed accidental deletion)
This commit is contained in:
Dan Carpenter 2012-09-05 15:32:53 +03:00 committed by Rusty Russell
parent c85a1f91b3
commit f22cf8eb48
1 changed files with 4 additions and 2 deletions
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6
drivers/block/virtio_blk.c
View File

@ -90,10 +90,12 @@ static inline struct virtblk_req *virtblk_alloc_req(struct virtio_blk *vblk,
struct virtblk_req *vbr;
vbr = mempool_alloc(vblk->pool, gfp_mask);
if (vbr && use_bio)
sg_init_table(vbr->sg, vblk->sg_elems);
if (!vbr)
return NULL;
vbr->vblk = vblk;
if (use_bio)
sg_init_table(vbr->sg, vblk->sg_elems);
return vbr;
}