linux-kernel - [ 29/48] ARM: SAMSUNG: Should check for IS

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Date:	Sun, 01 Jul 2012 18:20:35 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Jonghwan Choi <jhbird.choi@...sung.com>,
	Kukjin Kim <kgene.kim@...sung.com>
Subject: [ 29/48] ARM: SAMSUNG: Should check for IS_ERR(clk) instead of NULL

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jonghwan Choi <jhbird.choi@...sung.com>

commit a5d8f4765f0e92ef027492a8cb979c5b8d45f2c3 upstream.

On the error condition clk_get() returns ERR_PTR().

Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
Signed-off-by: Kukjin Kim <kgene.kim@...sung.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/arm/plat-samsung/include/plat/watchdog-reset.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/plat-samsung/include/plat/watchdog-reset.h b/arch/arm/plat-samsung/include/plat/watchdog-reset.h
index f19aff1..bc4db9b 100644
--- a/arch/arm/plat-samsung/include/plat/watchdog-reset.h
+++ b/arch/arm/plat-samsung/include/plat/watchdog-reset.h
@@ -25,7 +25,7 @@ static inline void arch_wdt_reset(void)
 
 	__raw_writel(0, S3C2410_WTCON);	  /* disable watchdog, to be safe  */
 
-	if (s3c2410_wdtclk)
+	if (!IS_ERR(s3c2410_wdtclk))
 		clk_enable(s3c2410_wdtclk);
 
 	/* put initial values into count and data */


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