pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare()

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>

diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c
index e6929bc739684ccda681294b726653ea647c1abf..90f969f9f5e2b42f4da874088104b60aed1211c9 100644 (file)
--- a/drivers/pwm/pwm-rockchip.c
+++ b/drivers/pwm/pwm-rockchip.c
@@ -351,7 +351,6 @@ 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;
        }