Messages in this thread Patch in this message | | | From | Wolfram Sang <> | Subject | [PATCH 6/6] watchdog: tangox_wdt: test clock rate to avoid division by 0 | Date | Wed, 2 Mar 2016 23:33:37 +0100 |
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From: Wolfram Sang <wsa+renesas@sang-engineering.com>
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@sang-engineering.com> ---
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
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