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Commit 68feaca0 authored by Nicolas Ferre's avatar Nicolas Ferre Committed by Lee Jones
Browse files

backlight: pwm: Handle EPROBE_DEFER while requesting the PWM 



When trying to request the PWM device with devm_pwm_get(), the EPROBE_DEFER
flag is not handled properly. It can lead to the PWM not being found.

Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: default avatarThierry Reding <thierry.reding@gmail.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent b787f68c

drivers/video/backlight/pwm_bl.c

+4 −0
Original line number Diff line number Diff line
@@ -274,6 +274,10 @@ static int pwm_backlight_probe(struct platform_device *pdev) 


	pb->pwm = devm_pwm_get(&pdev->dev, NULL);

	if (IS_ERR(pb->pwm)) {

		ret = PTR_ERR(pb->pwm);

		if (ret == -EPROBE_DEFER)

			goto err_alloc;



		dev_err(&pdev->dev, "unable to request PWM, trying legacy API\n");

		pb->legacy = true;

		pb->pwm = pwm_request(data->pwm_id, "pwm-backlight");