pwm: tiehrpwm: fix clock imbalance in probe error path

Make sure to unprepare the clock before returning on late probe errors.

Fixes: b388f15fd14c ("pwm: pwm-tiehrpwm: Use clk_enable/disable instead clk_prepare/unprepare.")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c
index 6e51a075d1a7..387eaf1bac85 100644
--- a/drivers/pwm/pwm-tiehrpwm.c
+++ b/drivers/pwm/pwm-tiehrpwm.c
@@ -489,13 +489,18 @@ static int ehrpwm_pwm_probe(struct platform_device *pdev)
         ret = pwmchip_add(&pc->chip);
         if (ret < 0) {
                 dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
-                return ret;
+                goto err_clk_unprepare;
         }
 
         pm_runtime_enable(&pdev->dev);
 
         platform_set_drvdata(pdev, pc);
         return 0;
+
+err_clk_unprepare:
+        clk_unprepare(pc->tbclk);
+
+        return ret;
 }
 
 static int ehrpwm_pwm_remove(struct platform_device *pdev)