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authorLinus Torvalds <torvalds@linux-foundation.org>2015-12-12 10:24:00 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-12-12 10:24:00 -0800
commit7807563183c4c1bec1bcc815e8bcc40d807c81b7 (patch)
tree4730f566d6391fdd597ad964c2d4d8870832b1ce /block
parent6539756e68bf8fab1dfc08bddf00d9fbba8c071f (diff)
parentaf096e2235c5de76af7e8749f59a90de07f5e943 (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe: "A set of fixes for the current series. This contains: - A bunch of fixes for lightnvm, should be the last round for this series. From Matias and Wenwei. - A writeback detach inode fix from Ilya, also marked for stable. - A block (though it says SCSI) fix for an OOPS in SCSI runtime power management. - Module init error path fixes for null_blk from Minfei" * 'for-linus' of git://git.kernel.dk/linux-block: null_blk: Fix error path in module initialization lightnvm: do not compile in debugging by default lightnvm: prevent gennvm module unload on use lightnvm: fix media mgr registration lightnvm: replace req queue with nvmdev for lld lightnvm: comments on constants lightnvm: check mm before use lightnvm: refactor spin_unlock in gennvm_get_blk lightnvm: put blks when luns configure failed lightnvm: use flags in rrpc_get_blk block: detach bdev inode from its wb in __blkdev_put() SCSI: Fix NULL pointer dereference in runtime PM
Diffstat (limited to 'block')
-rw-r--r--block/blk-core.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index a0af4043dda2..3636be469fa2 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -3405,6 +3405,9 @@ int blk_pre_runtime_suspend(struct request_queue *q)
{
int ret = 0;
+ if (!q->dev)
+ return ret;
+
spin_lock_irq(q->queue_lock);
if (q->nr_pending) {
ret = -EBUSY;
@@ -3432,6 +3435,9 @@ EXPORT_SYMBOL(blk_pre_runtime_suspend);
*/
void blk_post_runtime_suspend(struct request_queue *q, int err)
{
+ if (!q->dev)
+ return;
+
spin_lock_irq(q->queue_lock);
if (!err) {
q->rpm_status = RPM_SUSPENDED;
@@ -3456,6 +3462,9 @@ EXPORT_SYMBOL(blk_post_runtime_suspend);
*/
void blk_pre_runtime_resume(struct request_queue *q)
{
+ if (!q->dev)
+ return;
+
spin_lock_irq(q->queue_lock);
q->rpm_status = RPM_RESUMING;
spin_unlock_irq(q->queue_lock);
@@ -3478,6 +3487,9 @@ EXPORT_SYMBOL(blk_pre_runtime_resume);
*/
void blk_post_runtime_resume(struct request_queue *q, int err)
{
+ if (!q->dev)
+ return;
+
spin_lock_irq(q->queue_lock);
if (!err) {
q->rpm_status = RPM_ACTIVE;