From 48c7823f42da2bc881ae2e325ed40123871c2fb9 Mon Sep 17 00:00:00 2001
From: Jon Derrick <jonathan.derrick@intel.com>
Date: Tue, 8 Mar 2016 10:34:54 -0700
Subject: [PATCH] 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>
---
drivers/nvme/host/pci.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 74514c7674290..e9f18e1d73e59 100644
--- 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;
--
GitLab