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/pwm/pwm-lpc18xx-sct.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pwm/pwm-lpc18xx-sct.c b/drivers/pwm/pwm-lpc18xx-sct.c index 9163085101bc94..6487962c355c03 100644 --- a/drivers/pwm/pwm-lpc18xx-sct.c +++ b/drivers/pwm/pwm-lpc18xx-sct.c @@ -360,6 +360,8 @@ static int lpc18xx_pwm_probe(struct platform_device *pdev) } lpc18xx_pwm->clk_rate = clk_get_rate(lpc18xx_pwm->pwm_clk); + if (!lpc18xx_pwm->clk_rate) + return -EINVAL; mutex_init(&lpc18xx_pwm->res_lock); mutex_init(&lpc18xx_pwm->period_lock); -- 2.7.0
