diff options
| author | Tim Gardner <tim.gardner@canonical.com> | 2013-11-14 14:29:52 -0700 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-11-26 11:23:53 -0500 |
| commit | 427bfe07e6744c058ce6fc4aa187cda96b635539 (patch) | |
| tree | 5833c988a625406a9572a2b89d07f8f21be7c579 /drivers/block/xen-blkfront.c | |
| parent | f7cb20f03dc6dff1b19942cf3dda6d154c86f29b (diff) | |
| download | lwn-427bfe07e6744c058ce6fc4aa187cda96b635539.tar.gz lwn-427bfe07e6744c058ce6fc4aa187cda96b635539.zip | |
xen-blkfront: Silence pfn maybe-uninitialized warning
pfn cannot actually be used unless (!info->feature_persistent), nor is
pfn accessed in get_grant() unless (!info->feature_persistent), but silence
this warning anyway. gcc-4.8
drivers/block/xen-blkfront.c: In function 'do_blkif_request':
drivers/block/xen-blkfront.c:508:20: warning: 'pfn' may be used uninitialized in this function [-Wmaybe-uninitialized]
gnt_list_entry = get_grant(&gref_head, pfn, info);
^
drivers/block/xen-blkfront.c:492:19: note: 'pfn' was declared here
unsigned long pfn;
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Diffstat (limited to 'drivers/block/xen-blkfront.c')
| -rw-r--r-- | drivers/block/xen-blkfront.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 432db1b59b00..5f926de61950 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -489,7 +489,7 @@ static int blkif_queue_request(struct request *req) if ((ring_req->operation == BLKIF_OP_INDIRECT) && (i % SEGS_PER_INDIRECT_FRAME == 0)) { - unsigned long pfn; + unsigned long uninitialized_var(pfn); if (segments) kunmap_atomic(segments); |