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>
        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;
 
        }
 
        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");
-               ret =  -ENOENT;
+               ret = PTR_ERR(wdt_clock);
                goto err_irq;
        }