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path: root/drivers/rpmsg/virtio_rpmsg_bus.c
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Diffstat (limited to 'drivers/rpmsg/virtio_rpmsg_bus.c')
-rw-r--r--drivers/rpmsg/virtio_rpmsg_bus.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
index 92f6af6da699..73354ee27877 100644
--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -951,6 +951,7 @@ static int rpmsg_probe(struct virtio_device *vdev)
951 void *bufs_va; 951 void *bufs_va;
952 int err = 0, i; 952 int err = 0, i;
953 size_t total_buf_space; 953 size_t total_buf_space;
954 bool notify;
954 955
955 vrp = kzalloc(sizeof(*vrp), GFP_KERNEL); 956 vrp = kzalloc(sizeof(*vrp), GFP_KERNEL);
956 if (!vrp) 957 if (!vrp)
@@ -1030,8 +1031,22 @@ static int rpmsg_probe(struct virtio_device *vdev)
1030 } 1031 }
1031 } 1032 }
1032 1033
1034 /*
1035 * Prepare to kick but don't notify yet - we can't do this before
1036 * device is ready.
1037 */
1038 notify = virtqueue_kick_prepare(vrp->rvq);
1039
1040 /* From this point on, we can notify and get callbacks. */
1041 virtio_device_ready(vdev);
1042
1033 /* tell the remote processor it can start sending messages */ 1043 /* tell the remote processor it can start sending messages */
1034 virtqueue_kick(vrp->rvq); 1044 /*
1045 * this might be concurrent with callbacks, but we are only
1046 * doing notify, not a full kick here, so that's ok.
1047 */
1048 if (notify)
1049 virtqueue_notify(vrp->rvq);
1035 1050
1036 dev_info(&vdev->dev, "rpmsg host is online\n"); 1051 dev_info(&vdev->dev, "rpmsg host is online\n");
1037 1052