From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Date: Thu, 21 Jul 2022 10:31:29 +0000 (+0200)
Subject: pwm: sifive: Shut down hardware only after pwmchip_remove() completed
X-Git-Tag: v5.10.137~388
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6aaac1d9243ba46e52964f106e645f414668417a;p=users%2Fdwmw2%2Flinux.git

pwm: sifive: Shut down hardware only after pwmchip_remove() completed

[ Upstream commit 2375e964d541bb09158cd2dff67b5d74e8de61cd ]

The PWMs are expected to be functional until pwmchip_remove() is called.
So disable the clks only afterwards.

Fixes: 9e37a53eb051 ("pwm: sifive: Add a driver for SiFive SoC PWM")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/pwm/pwm-sifive.c b/drivers/pwm/pwm-sifive.c
index 1def1bc59240a..9cc0612f08498 100644
--- a/drivers/pwm/pwm-sifive.c
+++ b/drivers/pwm/pwm-sifive.c
@@ -326,6 +326,9 @@ static int pwm_sifive_remove(struct platform_device *dev)
 	struct pwm_device *pwm;
 	int ch;
 
+	pwmchip_remove(&ddata->chip);
+	clk_notifier_unregister(ddata->clk, &ddata->notifier);
+
 	for (ch = 0; ch < ddata->chip.npwm; ch++) {
 		pwm = &ddata->chip.pwms[ch];
 		if (pwm->state.enabled)
@@ -333,8 +336,6 @@ static int pwm_sifive_remove(struct platform_device *dev)
 	}
 
 	clk_unprepare(ddata->clk);
-	pwmchip_remove(&ddata->chip);
-	clk_notifier_unregister(ddata->clk, &ddata->notifier);
 
 	return 0;
 }