serial: omap: fix software flow control

Software flow control register bits were not defined correctly.

Also clarify the IXON and IXOFF logic to reflect what userspace wants.

Cc: stable@vger.kernel.org
Tested-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 6a58f4f64f81..1ba1f439a5b0 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -617,19 +617,19 @@ serial_omap_configure_xonxoff
 
         /*
          * IXON Flag:
-         * Enable XON/XOFF flow control on output.
-         * Transmit XON1, XOFF1
+         * Flow control for OMAP.TX
+         * OMAP.RX should listen for XON/XOFF
          */
         if (termios->c_iflag & IXON)
-                up->efr |= OMAP_UART_SW_TX;
+                up->efr |= OMAP_UART_SW_RX;
 
         /*
          * IXOFF Flag:
-         * Enable XON/XOFF flow control on input.
-         * Receiver compares XON1, XOFF1.
+         * Flow control for OMAP.RX
+         * OMAP.TX should send XON/XOFF
          */
         if (termios->c_iflag & IXOFF)
-                up->efr |= OMAP_UART_SW_RX;
+                up->efr |= OMAP_UART_SW_TX;
 
         serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
         serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);