linux-kernel - [PATCH 2/4] tty: serial: 8250

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Date:	Thu, 23 Apr 2015 10:51:04 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	linux-kernel@...r.kernel.org
Cc:	gregkh@...uxfoundation.org,
	Matthias Brugger <matthias.bgg@...il.com>,
	linux-mediatek@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-serial@...r.kernel.org,
	Alan Cox <alan@...ux.intel.com>,
	Sascha Hauer <s.hauer@...gutronix.de>
Subject: [PATCH 2/4] tty: serial: 8250_mtk: remove unnecessary test

When the driver has probed successfully the clk pointer is always valid,
so no need to test for it.

Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
---
 drivers/tty/serial/8250/8250_mtk.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index c6901dc..bcfaa8dc 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -212,9 +212,7 @@ static int mtk8250_remove(struct platform_device *pdev)
 	pm_runtime_get_sync(&pdev->dev);
 
 	serial8250_unregister_port(data->line);
-	if (!IS_ERR(data->uart_clk)) {
-		clk_disable_unprepare(data->uart_clk);
-	}
+	clk_disable_unprepare(data->uart_clk);
 
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
@@ -246,8 +244,7 @@ static int mtk8250_runtime_suspend(struct device *dev)
 {
 	struct mtk8250_data *data = dev_get_drvdata(dev);
 
-	if (!IS_ERR(data->uart_clk))
-		clk_disable_unprepare(data->uart_clk);
+	clk_disable_unprepare(data->uart_clk);
 
 	return 0;
 }
@@ -256,8 +253,7 @@ static int mtk8250_runtime_resume(struct device *dev)
 {
 	struct mtk8250_data *data = dev_get_drvdata(dev);
 
-	if (!IS_ERR(data->uart_clk))
-		clk_prepare_enable(data->uart_clk);
+	clk_prepare_enable(data->uart_clk);
 
 	return 0;
 }
-- 
2.1.4

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