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| author |   Bjorn Andersson <bjorn.andersson@linaro.org> | 2016-09-01 15:28:08 -0700 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2016-09-08 22:15:25 -0700 |
| commit | 4b83c52a21cf5a7421b7c28bebf8ff28ba96ceb9 (patch) | |
| tree | 750fbb5bb454ea00c2ea96859e08134cb50457bf /drivers/rpmsg | |
| parent | rpmsg: Move virtio specifics from public header (diff) | |
| download | linux-dev-4b83c52a21cf5a7421b7c28bebf8ff28ba96ceb9.tar.xz linux-dev-4b83c52a21cf5a7421b7c28bebf8ff28ba96ceb9.zip | |
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 <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/rpmsg')
| -rw-r--r-- | drivers/rpmsg/virtio_rpmsg_bus.c | 10 |
1 files changed, 6 insertions, 4 deletions
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) |