serial: xilinx_uartps: remove superfluous IDR write

The datesheet clearly states, that writing low bits to the
XUARTPS_IDR register have no effect. Remove the write.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index ba451c7209fc..974c361a91fe 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -583,9 +583,6 @@ static int xuartps_startup(struct uart_port *port)
         xuartps_writel(XUARTPS_IXR_TXEMPTY | XUARTPS_IXR_PARITY |
                 XUARTPS_IXR_FRAMING | XUARTPS_IXR_OVERRUN |
                 XUARTPS_IXR_RXTRIG | XUARTPS_IXR_TOUT, XUARTPS_IER_OFFSET);
-        xuartps_writel(~(XUARTPS_IXR_TXEMPTY | XUARTPS_IXR_PARITY |
-                XUARTPS_IXR_FRAMING | XUARTPS_IXR_OVERRUN |
-                XUARTPS_IXR_RXTRIG | XUARTPS_IXR_TOUT), XUARTPS_IDR_OFFSET);
 
         return retval;
 }