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-rw-r--r--drivers/nvme/host/pci.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index e13c370de830..3726dc780d15 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -989,6 +989,11 @@ static inline int nvme_process_cq(struct nvme_queue *nvmeq)
while (nvme_cqe_pending(nvmeq)) {
found++;
+ /*
+ * load-load control dependency between phase and the rest of
+ * the cqe requires a full read memory barrier
+ */
+ dma_rmb();
nvme_handle_cqe(nvmeq, nvmeq->cq_head);
nvme_update_cq_head(nvmeq);
}