diff options
| author |   Fabio Estevam <fabio.estevam@freescale.com> | 2015-06-22 01:16:18 -0300 |
|---|---|---|
| committer |   Wim Van Sebroeck <wim@iguana.be> | 2015-06-26 10:41:11 +0200 |
| commit | aefb163cb2b876bcbbceee47e3e4f22ed7364630 (patch) | |
| tree | 1b86dc1d609e293e2dc72a6db5c2258e8c3dbcdd /drivers/watchdog | |
| parent | watchdog: hpwdt: Add support for WDIOC_SETOPTIONS (diff) | |
| download | linux-dev-aefb163cb2b876bcbbceee47e3e4f22ed7364630.tar.xz linux-dev-aefb163cb2b876bcbbceee47e3e4f22ed7364630.zip | |
watchdog: imx2_wdt: Check for clk_prepare_enable() error
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>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/imx2_wdt.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/watchdog/imx2_wdt.c b/drivers/watchdog/imx2_wdt.c index 2acdd17025c4..add1fa0fad17 100644 --- a/drivers/watchdog/imx2_wdt.c +++ b/drivers/watchdog/imx2_wdt.c @@ -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)) { /* |