remoteproc: fix error path of ->find_vqs

Eliminate an erroneous invocation of rproc_shutdown inside
the error path of rproc_virtio_find_vqs.

Reported-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>

1 files changed, 12 insertions, 6 deletions

diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c
index e7a4780e93db..9e198e590675 100644
--- a/drivers/remoteproc/remoteproc_virtio.c
+++ b/drivers/remoteproc/remoteproc_virtio.c
@@ -120,15 +120,11 @@ static struct virtqueue *rp_find_vq(struct virtio_device *vdev,
         return vq;
 }
 
-static void rproc_virtio_del_vqs(struct virtio_device *vdev)
+static void __rproc_virtio_del_vqs(struct virtio_device *vdev)
 {
         struct virtqueue *vq, *n;
-        struct rproc *rproc = vdev_to_rproc(vdev);
         struct rproc_vring *rvring;
 
-        /* power down the remote processor before deleting vqs */
-        rproc_shutdown(rproc);
-
         list_for_each_entry_safe(vq, n, &vdev->vqs, list) {
                 rvring = vq->priv;
                 rvring->vq = NULL;
@@ -137,6 +133,16 @@ static void rproc_virtio_del_vqs(struct virtio_device *vdev)
         }
 }
 
+static void rproc_virtio_del_vqs(struct virtio_device *vdev)
+{
+        struct rproc *rproc = vdev_to_rproc(vdev);
+
+        /* power down the remote processor before deleting vqs */
+        rproc_shutdown(rproc);
+
+        __rproc_virtio_del_vqs(vdev);
+}
+
 static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned nvqs,
                        struct virtqueue *vqs[],
                        vq_callback_t *callbacks[],
@@ -163,7 +169,7 @@ static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned nvqs,
         return 0;
 
 error:
-        rproc_virtio_del_vqs(vdev);
+        __rproc_virtio_del_vqs(vdev);
         return ret;
 }