[PATCH] watchdog: fix clk_get() error check

[Akinobu Mita <akinobu.mita@gmail.com>]

The return value of clk_get() should be checked by IS_ERR().

Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>

---
 drivers/char/watchdog/pnx4008_wdt.c |    3 ++-
 drivers/char/watchdog/s3c2410_wdt.c |    4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

Index: 2.6-mm/drivers/char/watchdog/pnx4008_wdt.c
===================================================================
--- 2.6-mm.orig/drivers/char/watchdog/pnx4008_wdt.c
+++ 2.6-mm/drivers/char/watchdog/pnx4008_wdt.c
@@ -283,7 +283,8 @@ static int pnx4008_wdt_probe(struct plat
 	wdt_base = (void __iomem *)IO_ADDRESS(res->start);
 
 	wdt_clk = clk_get(&pdev->dev, "wdt_ck");
-	if (!wdt_clk) {
+	if (IS_ERR(wdt_clk)) {
+		ret = PTR_ERR(wdt_clk);
 		release_resource(wdt_mem);
 		kfree(wdt_mem);
 		goto out;
Index: 2.6-mm/drivers/char/watchdog/s3c2410_wdt.c
===================================================================
--- 2.6-mm.orig/drivers/char/watchdog/s3c2410_wdt.c
+++ 2.6-mm/drivers/char/watchdog/s3c2410_wdt.c
@@ -392,10 +392,10 @@ static int s3c2410wdt_probe(struct platf
 	}
 
 	wdt_clock = clk_get(&pdev->dev, "watchdog");
-	if (wdt_clock == NULL) {
+	if (IS_ERR(wdt_clock)) {
 		printk(KERN_INFO PFX "failed to find watchdog clock source\n");
 		iounmap(wdt_base);
-		return -ENOENT;
+		return PTR_ERR(wdt_clock);
 	}
 
 	clk_enable(wdt_clock);
-
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