[PATCH v1 2/6] pwm: tegra: Don't modify HW state in .remove callback
From: Uwe Kleine-König <hidden>
Date: 2021-06-17 09:52:00
Also in:
linux-pwm
Subsystem:
pwm subsystem, tegra pwm driver, the rest · Maintainers:
Uwe Kleine-König, Thierry Reding, Linus Torvalds
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 <redacted> --- drivers/pwm/pwm-tegra.c | 13 ------------- 1 file changed, 13 deletions(-)
diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
index fa025795198b..a051cf43e7d7 100644
--- a/drivers/pwm/pwm-tegra.c
+++ b/drivers/pwm/pwm-tegra.c@@ -300,25 +300,12 @@ 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; err = clk_prepare_enable(pc->clk); 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);
--
2.30.2