pwm: sifive: Reduce time the controller lock is held

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The lock is only to serialize access and update to user_count and
approx_period between different PWMs served by the same pwm_chip.
So the lock needs only to be taken during the check if the (chip global)
period can and/or needs to be changed.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

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Uwe Kleine-König 2022-07-21 12:31:25 +02:00 • committed by Thierry Reding

parent 61180f68ad

commit 0f02f491b7

1 changed files with 5 additions and 3 deletions

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drivers/pwm/pwm-sifive.c

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