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Commit 7bbdfb28 authored by Naveen Kaje's avatar Naveen Kaje Committed by Gerrit - the friendly Code Review server
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msm_serial_hs: avoid enabling disabling tx and rx in set_termios 



In set_termios, we reset RX and TX. It is not necessary to disable
and enable the RX and TX.

Change-Id: I7f902d5ce52a9f2c67b4313a6b08532e4f6c995f
Signed-off-by: default avatarNaveen Kaje <nkaje@codeaurora.org>
parent 8a749c24

drivers/tty/serial/msm_serial_hs.c

+1 −11
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
 * MSM 7k High speed uart driver

 *

 * Copyright (c) 2008 Google Inc.

 * Copyright (c) 2007-2014, The Linux Foundation. All rights reserved.

 * Copyright (c) 2007-2015, The Linux Foundation. All rights reserved.

 * Modified: Nick Pelly <npelly@google.com>

 *

 * All source code in this file is licensed under the following license
@@ -1144,11 +1144,6 @@ static void msm_hs_set_termios(struct uart_port *uport, 
	msm_hs_write(uport, UART_DM_CR, RESET_RX);

	msm_hs_write(uport, UART_DM_CR, RESET_TX);



	/* Disable RX and TX */

	msm_hs_write(uport, UART_DM_CR, UARTDM_CR_RX_DISABLE_BMSK);

	msm_hs_write(uport, UART_DM_CR, STALE_EVENT_DISABLE);

	msm_hs_write(uport, UART_DM_CR, UARTDM_CR_TX_DISABLE_BMSK);



	/* Issue TX BAM Start IFC command */

	msm_hs_write(uport, UART_DM_CR, START_TX_BAM_IFC);
@@ -1189,11 +1184,6 @@ static void msm_hs_set_termios(struct uart_port *uport, 
		msm_uport->flow_control = true;

	}

	msm_hs_write(uport, UART_DM_MR1, data);

	/* Enable RX and TX */

	msm_hs_write(uport, UART_DM_CR, STALE_EVENT_ENABLE);

	msm_hs_write(uport, UART_DM_CR, UARTDM_CR_RX_EN_BMSK);

	msm_hs_write(uport, UART_DM_CR, UARTDM_CR_TX_EN_BMSK);



	msm_hs_write(uport, UART_DM_IMR, msm_uport->imr_reg);

	/* Ensure register IO completion */

	mb();