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pwm: tegra: Don't modify HW state in .remove callback

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[ Upstream commit 86f7fa71cd ]

A consumer is expected to disable a PWM before calling pwm_put(). And if
they didn't there is hopefully a good reason (or the consumer needs
fixing). Also if disabling an enabled PWM was the right thing to do,
this should better be done in the framework instead of in each low level
driver.

So drop the hardware modification from the .remove() callback.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Uwe Kleine-König
2021-06-17 11:51:41 +02:00
committed by Chris
parent 261d860f42
commit b6866d62ab
1 changed files with 0 additions and 13 deletions
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13
drivers/pwm/pwm-tegra.c
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@@ -228,7 +228,6 @@ static int tegra_pwm_probe(struct platform_device *pdev)
static int tegra_pwm_remove(struct platform_device *pdev)
{
struct tegra_pwm_chip *pc = platform_get_drvdata(pdev);
unsigned int i;
int err;
if (WARN_ON(!pc))
@@ -238,18 +237,6 @@ static int tegra_pwm_remove(struct platform_device *pdev)
if (err < 0)
return err;
for (i = 0; i < pc->chip.npwm; i++) {
struct pwm_device *pwm = &pc->chip.pwms[i];
if (!pwm_is_enabled(pwm))
if (clk_prepare_enable(pc->clk) < 0)
continue;
pwm_writel(pc, i, 0);
clk_disable_unprepare(pc->clk);
}
reset_control_assert(pc->rst);
clk_disable_unprepare(pc->clk);