Re: [PATCH v3] backlight: Convert from Legacy pm ops to dev_pm_ops
From: Jingoo Han <hidden>
Date: 2013-06-03 04:10:19
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On Sunday, June 02, 2013 8:07 AM, Shuah Khan wrote:
Convert drivers/video/backlight/class to use dev_pm_ops for power management and remove Legacy PM ops hooks. With this change, backlight class registers suspend/resume callbacks via class->pm (dev_pm_ops) instead of Legacy class->suspend/resume. When __device_suspend() runs call-backs, it will find class->pm ops for the backlight class. Signed-off-by: Shuah Khan <redacted> Cc: Shuah Khan <redacted>
CC'ed Andrew Morton, It looks good. Acked-by: Jingoo Han <redacted> Best regards, Jingoo Han
quoted hunk ↗ jump to hunk
--- v2: Updated changelog to correct device class. v3: Updated changelog to correct device class. drivers/video/backlight/backlight.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index c74e7aa..0ffb251 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c@@ -208,7 +208,7 @@ static ssize_t backlight_show_actual_brightness(struct device *dev, static struct class *backlight_class; -static int backlight_suspend(struct device *dev, pm_message_t state) +static int backlight_suspend(struct device *dev) { struct backlight_device *bd = to_backlight_device(dev);@@ -236,6 +236,9 @@ static int backlight_resume(struct device *dev) return 0; } +static SIMPLE_DEV_PM_OPS(backlight_class_dev_pm_ops, backlight_suspend, + backlight_resume); + static void bl_device_release(struct device *dev) { struct backlight_device *bd = to_backlight_device(dev);@@ -414,8 +417,7 @@ static int __init backlight_class_init(void) } backlight_class->dev_attrs = bl_device_attributes; - backlight_class->suspend = backlight_suspend; - backlight_class->resume = backlight_resume; + backlight_class->pm = &backlight_class_dev_pm_ops; return 0; } --1.7.10.4