Merge remote-tracking branches 'asoc/fix/atmel', 'asoc/fix/fsl', 'asoc/fix/tegra...

[linux-drm-fsl-dcu.git] / block / blk-mq.c

diff --git a/block/blk-mq.c b/block/blk-mq.c
index cdc629cf075b74f27f7801565ec3d90f3e299ce0..c79126e110308e8b1ea4b322506a425ceeb3085c 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -202,10 +202,12 @@ static struct request *blk_mq_alloc_request_pinned(struct request_queue *q,
                if (rq) {
                        blk_mq_rq_ctx_init(q, ctx, rq, rw);
                        break;
-               } else if (!(gfp & __GFP_WAIT))
-                       break;
+               }
 
                blk_mq_put_ctx(ctx);
+               if (!(gfp & __GFP_WAIT))
+                       break;
+
                __blk_mq_run_hw_queue(hctx);
                blk_mq_wait_for_tags(hctx->tags);
        } while (1);
@@ -222,7 +224,8 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
                return NULL;
 
        rq = blk_mq_alloc_request_pinned(q, rw, gfp, reserved);
-       blk_mq_put_ctx(rq->mq_ctx);
+       if (rq)
+               blk_mq_put_ctx(rq->mq_ctx);
        return rq;
 }
 
@@ -235,7 +238,8 @@ struct request *blk_mq_alloc_reserved_request(struct request_queue *q, int rw,
                return NULL;
 
        rq = blk_mq_alloc_request_pinned(q, rw, gfp, true);
-       blk_mq_put_ctx(rq->mq_ctx);
+       if (rq)
+               blk_mq_put_ctx(rq->mq_ctx);
        return rq;
 }
 EXPORT_SYMBOL(blk_mq_alloc_reserved_request);
@@ -308,12 +312,12 @@ void blk_mq_complete_request(struct request *rq, int error)
 
        blk_account_io_completion(rq, bytes);
 
+       blk_account_io_done(rq);
+
        if (rq->end_io)
                rq->end_io(rq, error);
        else
                blk_mq_free_request(rq);
-
-       blk_account_io_done(rq);
 }
 
 void __blk_mq_end_io(struct request *rq, int error)