driver/uart_rpmsg: clear transmit buffer when remote exception occurred

Make uart rpmsg work normally when restart the remote core Signed-off-by: yintao <yintao@xiaomi.com>
2023-10-25 11:22:15 +08:00 · 2023-10-25 11:22:15 +08:00 · a1dc6dc7fc
parent b3727f67be
commit a1dc6dc7fc
1 changed files with 3 additions and 0 deletions
--- a/drivers/serial/uart_rpmsg.c
+++ b/drivers/serial/uart_rpmsg.c
@ -344,6 +344,9 @@ static void uart_rpmsg_device_destroy(FAR struct rpmsg_device *rdev,
    {
      rpmsg_destroy_ept(&priv->ept);
    }
+
+  dev->dmatx.nbytes = dev->dmatx.length + dev->dmatx.nlength;
+  uart_xmitchars_done(dev);
 }

 static int uart_rpmsg_ept_cb(FAR struct rpmsg_endpoint *ept, FAR void *data,