From 96e45e5202377da39d086ec19f8934ebcc5b0fd6 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Tue, 29 Jun 2021 18:22:53 +0100 Subject: [PATCH] pwm: ep93xx: Fix read of uninitialized variable ret There is a potential path in function ep93xx_pwm_apply where ret is never assigned a value and it is checked for an error code. Fix this by ensuring ret is zero'd in the success path to avoid this issue. Addresses-Coverity: ("Uninitialized scalar variable") Fixes: f6ef94edf0f6 ("pwm: ep93xx: Unfold legacy callbacks into ep93xx_pwm_apply()") Signed-off-by: Colin Ian King Signed-off-by: Thierry Reding --- drivers/pwm/pwm-ep93xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pwm/pwm-ep93xx.c b/drivers/pwm/pwm-ep93xx.c index 70fa2957..8a3d781 100644 --- a/drivers/pwm/pwm-ep93xx.c +++ b/drivers/pwm/pwm-ep93xx.c @@ -137,6 +137,7 @@ static int ep93xx_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, writew(duty_cycles, base + EP93XX_PWMx_DUTY_CYCLE); writew(period_cycles, base + EP93XX_PWMx_TERM_COUNT); } + ret = 0; } else { ret = -EINVAL; } -- 2.7.4