linux-kernel - [PATCH v3 2/3] tty: serial: msm: Remove duplicate operations on clocks in startup/shutdown

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Date:	Fri, 10 Apr 2015 17:49:55 +0530
From:	Pramod Gurav <gpramod@...eaurora.org>
To:	linux-arm-msm@...r.kernel.org, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	gregkh@...uxfoundation.org, bryanh@...eaurora.org,
	sboyd@...eaurora.org, jslaby@...e.cz,
	Pramod Gurav <gpramod@...eaurora.org>
Subject: [PATCH v3 2/3] tty: serial: msm: Remove duplicate operations on clocks in startup/shutdown

clk_prepare_enable/clk_disable_unprepare is already done in .pm
function of uart_ops hence get rid of them from msm_startup and
msm_shutdown.

Signed-off-by: Pramod Gurav <gpramod@...eaurora.org>
---
Changes since last version:
 - Decided to drop calls to clk operations

 drivers/tty/serial/msm_serial.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 99aba04..c32b088 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -494,8 +494,6 @@ static int msm_startup(struct uart_port *port)
 	if (unlikely(ret))
 		return ret;
 
-	msm_init_clock(port);
-
 	if (likely(port->fifosize > 12))
 		rfr_level = port->fifosize - 12;
 	else
@@ -525,8 +523,6 @@ static void msm_shutdown(struct uart_port *port)
 	msm_port->imr = 0;
 	msm_write(port, 0, UART_IMR); /* disable interrupts */
 
-	clk_disable_unprepare(msm_port->clk);
-
 	free_irq(port->irq, port);
 }
 
@@ -683,8 +679,7 @@ static void msm_power(struct uart_port *port, unsigned int state,
 
 	switch (state) {
 	case 0:
-		clk_prepare_enable(msm_port->clk);
-		clk_prepare_enable(msm_port->pclk);
+		msm_init_clock(port);
 		break;
 	case 3:
 		clk_disable_unprepare(msm_port->clk);
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

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