On Mon, 2013-09-09 at 16:40 +0800, Aaron Lu wrote: > The backlight control and event delivery functionality provided by ACPI > video module is mixed together and registered all during video device > enumeration time. As a result, the two functionality are also removed > together on module unload time or by the acpi_video_unregister function. > The two functionalities are actually independent and one may be useful > while the other one may be broken, so it is desirable to seperate the > two functionalities such that it is clear and easy to disable one > functionality without affecting the other one. This patch does the > seperation and as a result, a new video_bus_head list is introduced to > store all registered video bus structure and a new function > acpi_video_unregister_backlight is introduced to unregister backlight > interfaces for all video devices belonging to stored video buses. > > Currently, there is no need to unregister ACPI video's event delivery > functionality alone so the function acpi_video_remove_notify_handler is > not introduced, it can be easily added when needed. > > Signed-off-by: Aaron Lu <aaron.lu@xxxxxxxxx> Tested-by: Igor Gnatenko <i.gnatenko.brain@xxxxxxxxx> > --- > drivers/acpi/video.c | 451 ++++++++++++++++++++++++++++++--------------------- > include/acpi/video.h | 2 + > 2 files changed, 264 insertions(+), 189 deletions(-) -- Igor Gnatenko Fedora release 20 (Heisenbug) Linux 3.11.0-3.fc20.x86_64 -- Igor Gnatenko Fedora release 20 (Heisenbug) Linux 3.11.0-1.fc20.x86_64 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
