diff options
| author | David S. Miller <davem@davemloft.net> | 2013-12-18 16:42:06 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-18 16:42:06 -0500 |
| commit | 143c9054949436cb05e468439dc5e46231f33d09 (patch) | |
| tree | c2e972d8188fb1b36368e9acb5b6b59466c9d903 /drivers/block/xen-blkfront.c | |
| parent | 0b6807034791160d5e584138943d2daea765436d (diff) | |
| parent | 35eecf052250f663f07a4cded7d3503fd1b50729 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/ethernet/intel/i40e/i40e_main.c
drivers/net/macvtap.c
Both minor merge hassles, simple overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/block/xen-blkfront.c')
| -rw-r--r-- | drivers/block/xen-blkfront.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 432db1b59b00..c4a4c9006288 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); @@ -2011,6 +2011,10 @@ static void blkif_release(struct gendisk *disk, fmode_t mode) bdev = bdget_disk(disk, 0); + if (!bdev) { + WARN(1, "Block device %s yanked out from us!\n", disk->disk_name); + goto out_mutex; + } if (bdev->bd_openers) goto out; @@ -2041,6 +2045,7 @@ static void blkif_release(struct gendisk *disk, fmode_t mode) out: bdput(bdev); +out_mutex: mutex_unlock(&blkfront_mutex); } |