linux/include/acpi/video.h

#ifndef __ACPI_VIDEO_H
#define __ACPI_VIDEO_H

#if (defined CONFIG_ACPI_VIDEO || defined CONFIG_ACPI_VIDEO_MODULE)
extern int acpi_video_register(void);
#else
static inline int acpi_video_register(void) { return 0; }
#endif

#endif
ACPI: Populate DIDL before registering ACPI video device on Intel Intel graphics hardware that implements the ACPI IGD OpRegion spec requires that the list of display devices be populated before any ACPI video methods are called. Detect when this is the case and defer registration until the opregion code calls it. Fixes crashes on HP laptops. http://bugzilla.kernel.org/show_bug.cgi?id=11259 Signed-off-by: Matthew Garrett <mjg@redhat.com> Acked-by: Eric Anholt <eric@anholt.net> Signed-off-by: Len Brown <len.brown@intel.com> 2009-03-19 21:35:39 +00:00			`#ifndef __ACPI_VIDEO_H`
			`#define __ACPI_VIDEO_H`

			`#if (defined CONFIG_ACPI_VIDEO \|\| defined CONFIG_ACPI_VIDEO_MODULE)`
			`extern int acpi_video_register(void);`
			`#else`
			`static inline int acpi_video_register(void) { return 0; }`
			`#endif`

			`#endif`