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ACPI / video: Document acpi_video_handles_brightness_key_presses() a bit

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Document that acpi_video_handles_brightness_key_presses()'s return value
may change over time and should not be cached.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Hans de Goede 2016-01-14 09:41:47 +01:00 committed by Rafael J. Wysocki
parent 14e9355363
commit 382d11639f
1 changed files with 4 additions and 0 deletions
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include/acpi/video.h
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@ -32,6 +32,10 @@ extern int acpi_video_get_edid(struct acpi_device *device, int type,
int device_id, void **edid);
extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
/*
* Note: The value returned by acpi_video_handles_brightness_key_presses()
* may change over time and should not be cached.
*/
extern bool acpi_video_handles_brightness_key_presses(void);
#else
static inline int acpi_video_register(void) { return 0; }