pwm: stm32: Add check for clk_enable()

Add check for the return value of clk_enable() to catch the potential
error.

Fixes: 19f1016ea960 ("pwm: stm32: Fix enable count for clk in .probe()")
Signed-off-by: Mingwei Zheng <[email protected]>
Signed-off-by: Jiasheng Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>

diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c
index 17e591f61efb6031b6c47e25c88d252377d0094a..a59de4de18b6e9a06de5afd952241c1844ab149a 100644 (file)
--- a/drivers/pwm/pwm-stm32.c
+++ b/drivers/pwm/pwm-stm32.c
@@ -858,8 +858,11 @@ static int stm32_pwm_probe(struct platform_device *pdev)
        chip->ops = &stm32pwm_ops;
 
        /* Initialize clock refcount to number of enabled PWM channels. */
-       for (i = 0; i < num_enabled; i++)
-               clk_enable(priv->clk);
+       for (i = 0; i < num_enabled; i++) {
+               ret = clk_enable(priv->clk);
+               if (ret)
+                       return ret;
+       }
 
        ret = devm_pwmchip_add(dev, chip);
        if (ret < 0)