[PATCH] nvme: use __iowrite64_copy for SQs in the CMB

[Saar Gross]

Use __iowrite64_copy() instead of memcpy_toio() when copying SQ entries
to a SQ that's contained in the CMB.
__iowrite64_copy() writes to the MMIO in 64-bit units, whenever
possible.

Signed-off-by: Saar Gross <saar at annapurnalabs.com>
---
 drivers/nvme/host/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 0248d0e..0e603f0 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -289,7 +289,7 @@ static void __nvme_submit_cmd(struct nvme_queue *nvmeq,
        u16 tail = nvmeq->sq_tail;

        if (nvmeq->sq_cmds_io)
-               memcpy_toio(&nvmeq->sq_cmds_io[tail], cmd, sizeof(*cmd));
+               __iowrite64_copy(&nvmeq->sq_cmds_io[tail], cmd,
sizeof(*cmd) / 8);
        else
                memcpy(&nvmeq->sq_cmds[tail], cmd, sizeof(*cmd));

-- 
2.7.4