rpmsg: Allow callback to return errors

[cascardo/linux.git] / samples / rpmsg / rpmsg_client_sample.c

diff --git a/samples/rpmsg/rpmsg_client_sample.c b/samples/rpmsg/rpmsg_client_sample.c
index 4fcd7ee..f161dfd 100644 (file)
--- a/samples/rpmsg/rpmsg_client_sample.c
+++ b/samples/rpmsg/rpmsg_client_sample.c
@@ -28,7 +28,7 @@ struct instance_data {
        int rx_count;
 };
 
-static void rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len,
+static int rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len,
                                                void *priv, u32 src)
 {
        int ret;
@@ -43,13 +43,15 @@ static void rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len,
        /* samples should not live forever */
        if (idata->rx_count >= MSG_LIMIT) {
                dev_info(&rpdev->dev, "goodbye!\n");
-               return;
+               return 0;
        }
 
        /* send a new message now */
        ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG));
        if (ret)
                dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);
+
+       return 0;
 }
 
 static int rpmsg_sample_probe(struct rpmsg_device *rpdev)