diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2021-03-12 12:00:58 +0300 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2021-03-22 14:08:06 +0300 |
| commit | 9f0f6107e07289c99f599d4e4ad9c62dec4abfd6 (patch) | |
| tree | 9c9128777eb3e94e9a5ae1e9cb661e81184016d0 /drivers/pwm/pwm-cros-ec.c | |
| parent | 09081c9ba6c22bd63b6ce681e60d71a95acbc115 (diff) | |
| download | linux-9f0f6107e07289c99f599d4e4ad9c62dec4abfd6.tar.xz | |
pwm: cros-ec: Refuse requests with unsupported polarity
The driver only supports normal polarity and so should refuse requests
for inversed polarity.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-cros-ec.c')
| -rw-r--r-- | drivers/pwm/pwm-cros-ec.c | 3 |
1 files changed, 3 insertions, 0 deletions
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. |