| Message ID | 84aa28c0-aec0-355b-ac85-6e98c47a1caf@intel.com (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Delegated to: | Rafael Wysocki |
| Headers | show |
On Thu, 2016-05-26 at 13:15 +0800, Aaron Lu wrote: > On 05/26/2016 09:49 AM, Valdis.Kletnieks@vt.edu wrote: > > On Wed, 25 May 2016 13:15:26 +0800, Aaron Lu said: > >> Valdis, can you please give the patch a try? Thanks. > > > > Sorry, had a few days where actual work commitments and other > > things got in the way... I tested this patch against next-20160524, > > and can report that the problem is fixed, so feel free to > > stick a "Tested-By:" on it.... > > Thanks a lot for the confirm, here is the updated patch with your > tested-by tag added. > > From: Aaron Lu <aaron.lu@intel.com> > Date: Sat, 21 May 2016 15:30:46 +0800 > Subject: [PATCH] ACPI / Thermal / video: fix max_level incorrect value > > commit 059500940def("ACPI/video: export acpi_video_get_levels") > mistakenly dropped the correct value of max_level and that caused the > set_level function following failed and the acpi_video backlight interface > didn't get created. Fix this by passing back the correct max_level value. > > While at it, also fix the param used in acpi_video_device_lcd_query_levels > where acpi_handle is expected but acpi_video_device is passed. > > Reported-and-tested-by: Valdis Kletnieks <valdis.kletnieks@vt.edu> > Signed-off-by: Aaron Lu <aaron.lu@intel.com> Acked-by: Zhang Rui <rui.zhang@intel.com> > --- > drivers/acpi/acpi_video.c | 9 ++++++--- > drivers/thermal/int340x_thermal/int3406_thermal.c | 2 +- > include/acpi/video.h | 6 ++++-- > 3 files changed, 11 insertions(+), 6 deletions(-) > > diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c > index 3d5b8a099351..c1d138e128cb 100644 > --- a/drivers/acpi/acpi_video.c > +++ b/drivers/acpi/acpi_video.c > @@ -754,7 +754,8 @@ static int acpi_video_bqc_quirk(struct acpi_video_device *device, > } > > int acpi_video_get_levels(struct acpi_device *device, > - struct acpi_video_device_brightness **dev_br) > + struct acpi_video_device_brightness **dev_br, > + int *pmax_level) > { > union acpi_object *obj = NULL; > int i, max_level = 0, count = 0, level_ac_battery = 0; > @@ -841,6 +842,8 @@ int acpi_video_get_levels(struct acpi_device *device, > > br->count = count; > *dev_br = br; > + if (pmax_level) > + *pmax_level = max_level; > > out: > kfree(obj); > @@ -869,7 +872,7 @@ acpi_video_init_brightness(struct acpi_video_device *device) > struct acpi_video_device_brightness *br = NULL; > int result = -EINVAL; > > - result = acpi_video_get_levels(device->dev, &br); > + result = acpi_video_get_levels(device->dev, &br, &max_level); > if (result) > return result; > device->brightness = br; > @@ -1737,7 +1740,7 @@ static void acpi_video_run_bcl_for_osi(struct acpi_video_bus *video) > > mutex_lock(&video->device_list_lock); > list_for_each_entry(dev, &video->video_device_list, entry) { > - if (!acpi_video_device_lcd_query_levels(dev, &levels)) > + if (!acpi_video_device_lcd_query_levels(dev->dev->handle, &levels)) > kfree(levels); > } > mutex_unlock(&video->device_list_lock); > diff --git a/drivers/thermal/int340x_thermal/int3406_thermal.c b/drivers/thermal/int340x_thermal/int3406_thermal.c > index 13d431cbd29e..a578cd257db4 100644 > --- a/drivers/thermal/int340x_thermal/int3406_thermal.c > +++ b/drivers/thermal/int340x_thermal/int3406_thermal.c > @@ -177,7 +177,7 @@ static int int3406_thermal_probe(struct platform_device *pdev) > return -ENODEV; > d->raw_bd = bd; > > - ret = acpi_video_get_levels(ACPI_COMPANION(&pdev->dev), &d->br); > + ret = acpi_video_get_levels(ACPI_COMPANION(&pdev->dev), &d->br, NULL); > if (ret) > return ret; > > diff --git a/include/acpi/video.h b/include/acpi/video.h > index 70a41f742037..5731ccb42585 100644 > --- a/include/acpi/video.h > +++ b/include/acpi/video.h > @@ -51,7 +51,8 @@ extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type); > */ > extern bool acpi_video_handles_brightness_key_presses(void); > extern int acpi_video_get_levels(struct acpi_device *device, > - struct acpi_video_device_brightness **dev_br); > + struct acpi_video_device_brightness **dev_br, > + int *pmax_level); > #else > static inline int acpi_video_register(void) { return 0; } > static inline void acpi_video_unregister(void) { return; } > @@ -72,7 +73,8 @@ static inline bool acpi_video_handles_brightness_key_presses(void) > return false; > } > static inline int acpi_video_get_levels(struct acpi_device *device, > - struct acpi_video_device_brightness **dev_br) > + struct acpi_video_device_brightness **dev_br, > + int *pmax_level) > { > return -ENODEV; > }
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c index 3d5b8a099351..c1d138e128cb 100644 --- a/drivers/acpi/acpi_video.c +++ b/drivers/acpi/acpi_video.c @@ -754,7 +754,8 @@ static int acpi_video_bqc_quirk(struct acpi_video_device *device, } int acpi_video_get_levels(struct acpi_device *device, - struct acpi_video_device_brightness **dev_br) + struct acpi_video_device_brightness **dev_br, + int *pmax_level) { union acpi_object *obj = NULL; int i, max_level = 0, count = 0, level_ac_battery = 0; @@ -841,6 +842,8 @@ int acpi_video_get_levels(struct acpi_device *device, br->count = count; *dev_br = br; + if (pmax_level) + *pmax_level = max_level; out: kfree(obj); @@ -869,7 +872,7 @@ acpi_video_init_brightness(struct acpi_video_device *device) struct acpi_video_device_brightness *br = NULL; int result = -EINVAL; - result = acpi_video_get_levels(device->dev, &br); + result = acpi_video_get_levels(device->dev, &br, &max_level); if (result) return result; device->brightness = br; @@ -1737,7 +1740,7 @@ static void acpi_video_run_bcl_for_osi(struct acpi_video_bus *video) mutex_lock(&video->device_list_lock); list_for_each_entry(dev, &video->video_device_list, entry) { - if (!acpi_video_device_lcd_query_levels(dev, &levels)) + if (!acpi_video_device_lcd_query_levels(dev->dev->handle, &levels)) kfree(levels); } mutex_unlock(&video->device_list_lock); diff --git a/drivers/thermal/int340x_thermal/int3406_thermal.c b/drivers/thermal/int340x_thermal/int3406_thermal.c index 13d431cbd29e..a578cd257db4 100644 --- a/drivers/thermal/int340x_thermal/int3406_thermal.c +++ b/drivers/thermal/int340x_thermal/int3406_thermal.c @@ -177,7 +177,7 @@ static int int3406_thermal_probe(struct platform_device *pdev) return -ENODEV; d->raw_bd = bd; - ret = acpi_video_get_levels(ACPI_COMPANION(&pdev->dev), &d->br); + ret = acpi_video_get_levels(ACPI_COMPANION(&pdev->dev), &d->br, NULL); if (ret) return ret; diff --git a/include/acpi/video.h b/include/acpi/video.h index 70a41f742037..5731ccb42585 100644 --- a/include/acpi/video.h +++ b/include/acpi/video.h @@ -51,7 +51,8 @@ extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type); */ extern bool acpi_video_handles_brightness_key_presses(void); extern int acpi_video_get_levels(struct acpi_device *device, - struct acpi_video_device_brightness **dev_br); + struct acpi_video_device_brightness **dev_br, + int *pmax_level); #else static inline int acpi_video_register(void) { return 0; } static inline void acpi_video_unregister(void) { return; } @@ -72,7 +73,8 @@ static inline bool acpi_video_handles_brightness_key_presses(void) return false; } static inline int acpi_video_get_levels(struct acpi_device *device, - struct acpi_video_device_brightness **dev_br) + struct acpi_video_device_brightness **dev_br, + int *pmax_level) { return -ENODEV; }