linux-kernel - [PATCH] davinci: fix return value check by using IS_ERR in tnetv107x_devices

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Message-ID: <CAPgLHd-xYzLwnptYpOV4HrdJyn3AZahx2VGVAVLHiEYvcj-APw@mail.gmail.com>
Date:	Fri, 21 Sep 2012 14:12:31 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	nsekhar@...com, khilman@...com, linux@....linux.org.uk
Cc:	yongjun_wei@...ndmicro.com.cn,
	davinci-linux-open-source@...ux.davincidsp.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] davinci: fix return value check by using IS_ERR in tnetv107x_devices_init()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

In case of error, the function clk_get() returns ERR_PTR() not
NULL pointer. The NULL test in the error handling should be
replaced with IS_ERR().

dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 arch/arm/mach-davinci/devices-tnetv107x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-davinci/devices-tnetv107x.c b/arch/arm/mach-davinci/devices-tnetv107x.c
index 29b17f7..773ab07 100644
--- a/arch/arm/mach-davinci/devices-tnetv107x.c
+++ b/arch/arm/mach-davinci/devices-tnetv107x.c
@@ -374,7 +374,7 @@ void __init tnetv107x_devices_init(struct tnetv107x_device_info *info)
 	 * complete sample conversion in time.
 	 */
 	tsc_clk = clk_get(NULL, "sys_tsc_clk");
-	if (tsc_clk) {
+	if (!IS_ERR(tsc_clk)) {
 		error = clk_set_rate(tsc_clk, 5000000);
 		WARN_ON(error < 0);
 		clk_put(tsc_clk);


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