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; dev->wdt.parent = &pdev->dev; dev->wdt.info = &tangox_wdt_info; -- 2.7.0
