[WATCHDOG] fix clk_get() error check

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

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/char/watchdog/pnx4008_wdt.c b/drivers/char/watchdog/pnx4008_wdt.c
index 3a55fc6abcd8..0e3d589d6332 100644
--- a/drivers/char/watchdog/pnx4008_wdt.c
+++ b/drivers/char/watchdog/pnx4008_wdt.c
@@ -283,7 +283,8 @@ static int pnx4008_wdt_probe(struct platform_device *pdev)
         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;