Overrun also causes an internal flag to be set, which disables further
reception. Before the next frame can
be received, the MPU must:
• Reset the RX FIFO.
• clear the internal flag.
In the uart mode a dummy read is needed. Add the same.
Signed-off-by: Shubhrajyoti D <shubhrajy...@ti.com>
---
- functional testing on omap4sdp
- Verified idle and suspend path hits off on beagle.
drivers/tty/serial/omap-serial.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index a0d4460..bc22a2b 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -334,6 +334,13 @@ static unsigned int check_modem_status(struct
uart_omap_port *up)
static void serial_omap_rlsi(struct uart_omap_port *up, unsigned int lsr)
{
unsigned int flag;
+ unsigned char ch = 0;
+
+ if (!(lsr & UART_LSR_BRK_ERROR_BITS))
+ return;
+
+ if (likely(lsr & UART_LSR_DR))
+ ch = serial_in(up, UART_RX);
up->port.icount.rx++;
flag = TTY_NORMAL;
--
1.7.5.4
--
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