Commit 48c7823f authored by Jon Derrick's avatar Jon Derrick Committed by Jens Axboe
Browse files

NVMe: Remove unused sq_head read in completion path 



Signed-off-by: default avatarJon Derrick <jonathan.derrick@intel.com>
Reviewed-by: default avatarSagi Grimberg <sagig@mellanox.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent f8b11260

drivers/nvme/host/pci.c

+0 −2
Original line number Diff line number Diff line
@@ -134,7 +134,6 @@ struct nvme_queue { 
	u32 __iomem *q_db;

	u16 q_depth;

	s16 cq_vector;

	u16 sq_head;

	u16 sq_tail;

	u16 cq_head;

	u16 qid;
@@ -719,7 +718,6 @@ static void __nvme_process_cq(struct nvme_queue *nvmeq, unsigned int *tag) 


		if ((status & 1) != phase)

			break;

		nvmeq->sq_head = le16_to_cpu(cqe.sq_head);

		if (++head == nvmeq->q_depth) {

			head = 0;

			phase = !phase;