pwm: meson: Use devm_clk_get_optional() to get the input clock

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Simplify the code which fetches the input clock for a PWM channel by
using devm_clk_get_optional().
This comes with a small functional change: previously all errors except
EPROBE_DEFER were ignored. Now all other errors are also treated as
errors. If no input clock is present devm_clk_get_optional() will return
NULL instead of an error which matches the behavior of the old code.

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

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Martin Blumenstingl 2019-06-12 21:58:59 +02:00 • committed by Thierry Reding

parent 084f137600

commit ba4004c715

1 changed files with 3 additions and 8 deletions

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drivers/pwm/pwm-meson.c

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