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Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
-rw-r--r--drivers/tty/serial/sh-sci.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 3bea91b3a6f..cd1379235f1 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1465,12 +1465,17 @@ static void sci_stop_rx(struct uart_port *port)
static void sci_enable_ms(struct uart_port *port)
{
- /* Nothing here yet .. */
+ /*
+ * Not supported by hardware, always a nop.
+ */
}
static void sci_break_ctl(struct uart_port *port, int break_state)
{
- /* Nothing here yet .. */
+ /*
+ * Not supported by hardware. Most parts couple break and rx
+ * interrupts together, with break detection always enabled.
+ */
}
#ifdef CONFIG_SERIAL_SH_SCI_DMA