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watchdog: imx2_wdt: Check for clk_prepare_enable() error

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clk_prepare_enable() may fail, so we should better check its return value
and propagate it in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Fabio Estevam 2015-06-22 01:16:18 -03:00 committed by Wim Van Sebroeck
parent 46c80b20d0
commit aefb163cb2
1 changed files with 7 additions and 2 deletions
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9
drivers/watchdog/imx2_wdt.c
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@ -260,7 +260,9 @@ static int __init imx2_wdt_probe(struct platform_device *pdev)
wdog->max_timeout = IMX2_WDT_MAX_TIME;
wdog->parent = &pdev->dev;
clk_prepare_enable(wdev->clk);
ret = clk_prepare_enable(wdev->clk);
if (ret)
return ret;
regmap_read(wdev->regmap, IMX2_WDT_WRSR, &val);
wdog->bootstatus = val & IMX2_WDT_WRSR_TOUT ? WDIOF_CARDRESET : 0;
@ -365,8 +367,11 @@ static int imx2_wdt_resume(struct device *dev)
{
struct watchdog_device *wdog = dev_get_drvdata(dev);
struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);
int ret;
clk_prepare_enable(wdev->clk);
ret = clk_prepare_enable(wdev->clk);
if (ret)
return ret;
if (watchdog_active(wdog) && !imx2_wdt_is_running(wdev)) {
/*