From 4b83c52a21cf5a7421b7c28bebf8ff28ba96ceb9 Mon Sep 17 00:00:00 2001 From: Bjorn Andersson Date: Thu, 1 Sep 2016 15:28:08 -0700 Subject: rpmsg: Allow callback to return errors Some rpmsg backends support holding on to and redelivering messages upon failed handling of them, so provide a way for the callback to report and error and allow the backends to handle this. Signed-off-by: Bjorn Andersson --- drivers/rpmsg/virtio_rpmsg_bus.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/rpmsg') diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c index 671cb1803431..3090b0d3072f 100644 --- a/drivers/rpmsg/virtio_rpmsg_bus.c +++ b/drivers/rpmsg/virtio_rpmsg_bus.c @@ -791,8 +791,8 @@ static void rpmsg_xmit_done(struct virtqueue *svq) } /* invoked when a name service announcement arrives */ -static void rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len, - void *priv, u32 src) +static int rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len, + void *priv, u32 src) { struct rpmsg_ns_msg *msg = data; struct rpmsg_device *newch; @@ -808,7 +808,7 @@ static void rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len, if (len != sizeof(*msg)) { dev_err(dev, "malformed ns msg (%d)\n", len); - return; + return -EINVAL; } /* @@ -819,7 +819,7 @@ static void rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len, */ if (rpdev) { dev_err(dev, "anomaly: ns ept has an rpdev handle\n"); - return; + return -EINVAL; } /* don't trust the remote processor for null terminating the name */ @@ -842,6 +842,8 @@ static void rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len, if (!newch) dev_err(dev, "rpmsg_create_channel failed\n"); } + + return 0; } static int rpmsg_probe(struct virtio_device *vdev) -- cgit