Since we cannot make sure the 'chip->npwm' will always be none zero here, and then if either equal to zero, the kzalloc() will return ZERO_SIZE_PTR, which equals to ((void *)16).
So this patch fix this with just doing the zero check before calling kzalloc(). Signed-off-by: Xiubo Li <[email protected]> --- drivers/pwm/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 4b66bf0..786d0f1 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -236,7 +236,7 @@ int pwmchip_add(struct pwm_chip *chip) int ret; if (!chip || !chip->dev || !chip->ops || !chip->ops->config || - !chip->ops->enable || !chip->ops->disable) + !chip->ops->enable || !chip->ops->disable || !chip->npwm) return -EINVAL; mutex_lock(&pwm_lock); -- 1.8.5 -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
