commit fda6e0034e9da64e1cec31f4539b6c7abd9ed8be
author Uwe Kleine-König <u.kleine-koenig@baylibre.com> Sat Apr 05 11:27:13 2025 +0200
committer Uwe Kleine-König <ukleinek@kernel.org> Mon Apr 07 15:10:30 2025 +0200
tree afb65fc34c2f3f69c98a1b1251e6f08f63255d55
parent 00e53d0f4baedd72196b65f00698b2a5a537dc2b

pwm: stm32: Search an appropriate duty_cycle if period cannot be modified

If another channel is already enabled period must not be modified. If
the requested period is smaller than this unchangable period the driver
is still supposed to search a duty_cycle according to the usual rounding
rules.

So don't set the duty_cycle to 0 but continue to determine an
appropriate value for ccr.

Fixes: deaba9cff809 ("pwm: stm32: Implementation of the waveform callbacks")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/f0c50df31daa3d6069bfa8d7fb3e71fae241b026.1743844730.git.u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>