diff options
| author | Uwe Kleine-König <u.kleine-koenig@baylibre.com> | 2025-07-08 19:18:01 +0200 |
|---|---|---|
| committer | Uwe Kleine-König <ukleinek@kernel.org> | 2025-09-15 11:39:44 +0200 |
| commit | b871d093f1caebeb39b12136a33e7529b8fdea50 (patch) | |
| tree | 509e9d8ec8ddaa3ea8f1602005ed640495b281e5 /drivers/pwm/core.c | |
| parent | pwm: Disable PWM_DEBUG check for disabled states (diff) | |
| download | linux-b871d093f1caebeb39b12136a33e7529b8fdea50.tar.gz linux-b871d093f1caebeb39b12136a33e7529b8fdea50.zip | |
pwm: Check actual period and duty_cycle for ignored polarity test
When a lowlevel driver configures the wrong period that might
(historically) be ok if the emitted signal has a 100% relative duty_cycle
as that just corresponds to rounding down the duty_cycle to 0 which is an
allowed thing to do for a lowlevel driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/bc511c0250ea2f6390e4209ab1ea9c08a3c18612.1751994988.git.u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Diffstat (limited to 'drivers/pwm/core.c')
| -rw-r--r-- | drivers/pwm/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index d5d2dfbe4ade..2570ad6a7f59 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -536,7 +536,7 @@ static void pwm_apply_debug(struct pwm_device *pwm, } if (s2.polarity != state->polarity && - state->duty_cycle < state->period) + s2.duty_cycle < s2.period) dev_warn(pwmchip_parent(chip), ".apply ignored .polarity\n"); if (last->polarity == state->polarity && |