The inline acpi_video_register stub simply allows compilation on systems
with CONFIG_ACPI_VIDEO disabled. the dummy acpi_video_register does not
register an acpi_bus_driver at all. The inline acpi_video_register should
return to indicate lack of support when attempting to register an
acpi_bus_driver on such a system with CONFIG_ACPI_VIDEO disabled.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
---
include/acpi/video.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/acpi/video.h b/include/acpi/video.h
index 5731ccb..4536bd3 100644
--- a/include/acpi/video.h
+++ b/include/acpi/video.h
@@ -54,7 +54,7 @@ extern int acpi_video_get_levels(struct acpi_device *device,
struct acpi_video_device_brightness **dev_br,
int *pmax_level);
#else
-static inline int acpi_video_register(void) { return 0; }
+static inline int acpi_video_register(void) { return -ENODEV; }
static inline void acpi_video_unregister(void) { return; }
static inline int acpi_video_get_edid(struct acpi_device *device, int type,
int device_id, void **edid)
--
1.9.1
--
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