diff mbox series

[13/14] pwm: cros-ec: Refuse requests with unsupported polarity

Message ID 20210319102852.101209-14-u.kleine-koenig@pengutronix.de
State Rejected
Headers show
Series pwm: Patches I consider ready for the next merge window | expand

Commit Message

Uwe Kleine-König March 19, 2021, 10:28 a.m. UTC 
The driver only supports normal polarity and so should refuse requests
for inversed polarity.

Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20210312090058.386850-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/pwm/pwm-cros-ec.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
index d3115cb0e058..9fffb566af5f 100644
--- a/drivers/pwm/pwm-cros-ec.c
+++ b/drivers/pwm/pwm-cros-ec.c
@@ -124,6 +124,9 @@  static int cros_ec_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 	if (state->period != EC_PWM_MAX_DUTY)
 		return -EINVAL;
 
+	if (state->polarity != PWM_POLARITY_NORMAL)
+		return -EINVAL;
+
 	/*
 	 * EC doesn't separate the concept of duty cycle and enabled, but
 	 * kernel does. Translate.