pwm: bcm2835: Suppress error message for invalid period_ns

The PWM config can be triggered via sysfs, so we better suppress the
error message in case of an invalid period to avoid kernel log spamming.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pwm/pwm-bcm2835.c b/drivers/pwm/pwm-bcm2835.c
index f6fe0b9..5276306 100644 (file)
--- a/drivers/pwm/pwm-bcm2835.c
+++ b/drivers/pwm/pwm-bcm2835.c
@@ -72,11 +72,8 @@ static int bcm2835_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
 
        scaler = DIV_ROUND_CLOSEST(NSEC_PER_SEC, rate);
 
-       if (period_ns <= MIN_PERIOD) {
-               dev_err(pc->dev, "period %d not supported, minimum %d\n",
-                       period_ns, MIN_PERIOD);
+       if (period_ns <= MIN_PERIOD)
                return -EINVAL;
-       }
 
        writel(DIV_ROUND_CLOSEST(duty_ns, scaler),
               pc->base + DUTY(pwm->hwpwm));