Merge tag 'pm+acpi-4.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...

[firefly-linux-kernel-4.4.55.git] / block / blk-core.c

diff --git a/block/blk-core.c b/block/blk-core.c
index a0af4043dda2bbe953b3550c07ac40f88148958b..c487b94c59e3052074f5e40c99680d0cb709b517 100644 (file)
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1689,8 +1689,6 @@ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
        struct request *req;
        unsigned int request_count = 0;
 
-       blk_queue_split(q, &bio, q->bio_split);
-
        /*
         * low level driver can indicate that it wants pages above a
         * certain limit bounced to low memory (ie for highmem, or even
@@ -1698,6 +1696,8 @@ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
         */
        blk_queue_bounce(q, &bio);
 
+       blk_queue_split(q, &bio, q->bio_split);
+
        if (bio_integrity_enabled(bio) && bio_integrity_prep(bio)) {
                bio->bi_error = -EIO;
                bio_endio(bio);
@@ -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;