diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2021-03-12 11:59:16 +0300 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2021-03-22 14:07:26 +0300 |
| commit | 09081c9ba6c22bd63b6ce681e60d71a95acbc115 (patch) | |
| tree | 7bddf10dee9da89fad4e30e793e383841c1ef53e /drivers/pwm/pwm-sprd.c | |
| parent | c77e99f434c29d79505bd740cfead9648dfe0795 (diff) | |
| download | linux-09081c9ba6c22bd63b6ce681e60d71a95acbc115.tar.xz | |
pwm: sprd: 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: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-sprd.c')
| -rw-r--r-- | drivers/pwm/pwm-sprd.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-sprd.c b/drivers/pwm/pwm-sprd.c index 108cbec88667..98c479dfae31 100644 --- a/drivers/pwm/pwm-sprd.c +++ b/drivers/pwm/pwm-sprd.c @@ -164,6 +164,9 @@ static int sprd_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, struct pwm_state *cstate = &pwm->state; int ret; + if (state->polarity != PWM_POLARITY_NORMAL) + return -EINVAL; + if (state->enabled) { if (!cstate->enabled) { /* |