serial: pl011: (cosmetic) remove superfluous register write

In pl011_rx_chars() if pl011_dma_rx_trigger_dma() succeeds it will disable
the receive interrupt, no need to do this again.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 182a922e1942..ea6c2a3798ff 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -1214,8 +1214,8 @@ __acquires(&uap->port.lock)
                         dev_dbg(uap->port.dev, "could not trigger RX DMA job "
                                 "fall back to interrupt mode again\n");
                         uap->im |= UART011_RXIM;
+                        writew(uap->im, uap->port.membase + UART011_IMSC);
                 } else {
-                        uap->im &= ~UART011_RXIM;
 #ifdef CONFIG_DMA_ENGINE
                         /* Start Rx DMA poll */
                         if (uap->dmarx.poll_rate) {
@@ -1227,8 +1227,6 @@ __acquires(&uap->port.lock)
                         }
 #endif
                 }
-
-                writew(uap->im, uap->port.membase + UART011_IMSC);
         }
         spin_lock(&uap->port.lock);
 }