diff options
| -rw-r--r-- | drivers/serial/serial-uclass.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c index 321d23e..4121a37 100644 --- a/drivers/serial/serial-uclass.c +++ b/drivers/serial/serial-uclass.c @@ -228,6 +228,9 @@ static int _serial_getc(struct udevice *dev) struct serial_dev_priv *upriv = dev_get_uclass_priv(dev); char val; + if (upriv->rd_ptr == upriv->wr_ptr) + return __serial_getc(dev); + val = upriv->buf[upriv->rd_ptr++]; upriv->rd_ptr %= CONFIG_SERIAL_RX_BUFFER_SIZE; |