On Wed, Mar 02, 2016 at 11:33:37PM +0100, Wolfram Sang wrote: > From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> > > The clk API may return 0 on clk_get_rate, so we should check the result before > using it as a divisor. > > Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> > --- > > Should go individually via subsystem tree. > > drivers/watchdog/tangox_wdt.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/watchdog/tangox_wdt.c b/drivers/watchdog/tangox_wdt.c > index 709c1ed6fd79b9..cc702718ae4dbb 100644 > --- a/drivers/watchdog/tangox_wdt.c > +++ b/drivers/watchdog/tangox_wdt.c > @@ -139,6 +139,8 @@ static int tangox_wdt_probe(struct platform_device *pdev) > return err; > > dev->clk_rate = clk_get_rate(dev->clk); > + if (!dev->clk_rate) > + return -EINVAL; May be a nitpick, but clk_disable_unprepare() is missing. Guenter > > dev->wdt.parent = &pdev->dev; > dev->wdt.info = &tangox_wdt_info; > -- > 2.7.0 >
