In the probe path, dev_err() can be replaced with dev_err_probe() which will check if error code is -EPROBE_DEFER and prints the error name. It also sets the defer probe reason which can be checked later through debugfs. Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx> --- drivers/input/misc/pwm-vibra.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/drivers/input/misc/pwm-vibra.c b/drivers/input/misc/pwm-vibra.c index 81e777a04b88..fe6074e6fe68 100644 --- a/drivers/input/misc/pwm-vibra.c +++ b/drivers/input/misc/pwm-vibra.c @@ -135,21 +135,15 @@ static int pwm_vibrator_probe(struct platform_device *pdev) vibrator->vcc = devm_regulator_get(&pdev->dev, "vcc"); err = PTR_ERR_OR_ZERO(vibrator->vcc); - if (err) { - if (err != -EPROBE_DEFER) - dev_err(&pdev->dev, "Failed to request regulator: %d", - err); - return err; - } + if (err) + return dev_err_probe(&pdev->dev, err, + "Failed to request regulator\n"); vibrator->pwm = devm_pwm_get(&pdev->dev, "enable"); err = PTR_ERR_OR_ZERO(vibrator->pwm); - if (err) { - if (err != -EPROBE_DEFER) - dev_err(&pdev->dev, "Failed to request main pwm: %d", - err); - return err; - } + if (err) + return dev_err_probe(&pdev->dev, err, + "Failed to request main pwm\n"); INIT_WORK(&vibrator->play_work, pwm_vibrator_play_work); -- 2.25.1