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. It's more simple in error path.
Signed-off-by: Yang Yingliang <[email protected]> Reviewed-by: Daniel Thompson <[email protected]> --- Resend for adding SoB. --- drivers/video/backlight/pwm_bl.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index c0523a0269ee..ae858e3bd38f 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -513,9 +513,8 @@ static int pwm_backlight_probe(struct platform_device *pdev) } if (IS_ERR(pb->pwm)) { - ret = PTR_ERR(pb->pwm); - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "unable to request PWM\n"); + ret = dev_err_probe(&pdev->dev, PTR_ERR(pb->pwm), + "unable to request PWM\n"); goto err_alloc; } -- 2.25.1
