MLK-21222 rpmsg: imx: fix kernel dump when initialize the vring memory

The fix had been contained in commit "b7098fc4" MLK-16371-2 rpmsg: imx:
add the rpmsg for imx8qxp on imx_4.14.y branch.
But part of that patch is missed. Merge the solution back to imx_4.19.y
branch.
Use memset_io replace memset, because that the memory type of
rpvq->addr is strong order type. There would be kernel dump when memset
is used on imx8qxp.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>

diff --git a/drivers/rpmsg/imx_rpmsg.c b/drivers/rpmsg/imx_rpmsg.c
index 56e7d8b..9dfb498 100644 (file)
--- a/drivers/rpmsg/imx_rpmsg.c
+++ b/drivers/rpmsg/imx_rpmsg.c
@@ -248,7 +248,7 @@ static struct virtqueue *rp_find_vq(struct virtio_device *vdev,
                goto free_rpvq;
        }
 
-       memset(rpvq->addr, 0, RPMSG_RING_SIZE);
+       memset_io(rpvq->addr, 0, RPMSG_RING_SIZE);
 
        pr_debug("vring%d: phys 0x%x, virt 0x%p\n", index, virdev->vring[index],
                                        rpvq->addr);