From: Wendy Liang <wendy.liang@xxxxxxxxxx>
Kick the remote in virtio reset.
In order to be backward compatible, only set the vdev
status to NEEDS_RESET and kick the remote if the remote is
RUNNING_INDEPENDENT, that is only if the remote is already
running.
Signed-off-by: Wendy Liang <jliang@xxxxxxxxxx>
Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
---
drivers/remoteproc/remoteproc_virtio.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c
index d43e15b..bf3be6f1 100644
--- a/drivers/remoteproc/remoteproc_virtio.c
+++ b/drivers/remoteproc/remoteproc_virtio.c
@@ -231,8 +231,19 @@ static void rproc_virtio_reset(struct virtio_device *vdev)
rsc = (void *)rvdev->rproc->table_ptr + rvdev->rsc_offset;
- rsc->status = 0;
dev_dbg(&vdev->dev, "reset !\n");
+ if (rvdev->rproc->state == RPROC_RUNNING_INDEPENDENT) {
+ rsc->status = VIRTIO_CONFIG_S_NEEDS_RESET;
+ virtio_mb(false);
+ rproc_virtio_notify(rvdev);
+ while (rsc->status) {
+ if (!wait_for_completion_timeout(
+ &rvdev->config_wait_complete, HZ))
+ break;
+ }
+ } else {
+ rsc->status = 0;
+ }
}
/* provide the vdev features as retrieved from the firmware */
--
1.9.1
--
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