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pwm: rcar: Fix late Runtime PM enablement 

[ Upstream commit 1451a3eed2 ]

Runtime PM should be enabled before calling pwmchip_add(), as PWM users
can appear immediately after the PWM chip has been added.
Likewise, Runtime PM should be disabled after the removal of the PWM
chip.

Fixes: ed6c1476bf ("pwm: Add support for R-Car PWM Timer")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Geert Uytterhoeven 2020-03-16 11:32:14 +01:00 committed by Greg Kroah-Hartman
parent b71ac8086a
commit a5f036adae
1 changed files with 7 additions and 3 deletions
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10
drivers/pwm/pwm-rcar.c
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@ -228,24 +228,28 @@ static int rcar_pwm_probe(struct platform_device *pdev)
rcar_pwm->chip.base = -1;
rcar_pwm->chip.npwm = 1;
pm_runtime_enable(&pdev->dev);
ret = pwmchip_add(&rcar_pwm->chip);
if (ret < 0) {
dev_err(&pdev->dev, "failed to register PWM chip: %d\n", ret);
pm_runtime_disable(&pdev->dev);
return ret;
}
pm_runtime_enable(&pdev->dev);
return 0;
}
static int rcar_pwm_remove(struct platform_device *pdev)
{
struct rcar_pwm_chip *rcar_pwm = platform_get_drvdata(pdev);
int ret;
ret = pwmchip_remove(&rcar_pwm->chip);
pm_runtime_disable(&pdev->dev);
return pwmchip_remove(&rcar_pwm->chip);
return ret;
}
static const struct of_device_id rcar_pwm_of_table[] = {