From: Simon South simon@simonsouth.net
[ Upstream commit d5d8d675865ccddfe4da26c85f22c55cec663bf2 ]
If rockchip_pwm_probe() fails to register a PWM device it calls clk_unprepare() for the device's PWM clock, without having first disabled the clock and before jumping to an error handler that also unprepares it. This is likely to produce warnings from the kernel about the clock being unprepared when it is still enabled, and then being unprepared when it has already been unprepared.
Prevent these warnings by removing this unnecessary call to clk_unprepare().
Fixes: 48cf973cae33 ("pwm: rockchip: Avoid glitches on already running PWMs") Signed-off-by: Simon South simon@simonsouth.net Signed-off-by: Thierry Reding thierry.reding@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pwm/pwm-rockchip.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c index 7b9cdefb3daa3..ede027fbf2bb4 100644 --- a/drivers/pwm/pwm-rockchip.c +++ b/drivers/pwm/pwm-rockchip.c @@ -353,7 +353,6 @@ static int rockchip_pwm_probe(struct platform_device *pdev)
ret = pwmchip_add(&pc->chip); if (ret < 0) { - clk_unprepare(pc->clk); dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret); goto err_pclk; }