NVMe: Remove unused sq_head read in completion path

Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 74514c7..e9f18e1 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -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;