gpio: mvebu/pwm: Refuse requests with inverted polarity
[ Upstream commit 3ecb1017 ] The driver doesn't take struct pwm_state::polarity into account when configuring the hardware, so refuse requests for inverted polarity. Fixes: 757642f9 ("gpio: mvebu: Add limited PWM support") Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Sasha Levin <sashal@kernel.org>
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