ACPI: video: Add dev argument for backlight_device_register

This patch set adds generic abstract layer support for acpi video driver to
have generic user interface to control backlight and output switch control by
leveraging the existing backlight sysfs class driver, and by adding a new
video output sysfs class driver.

This patch:

Add dev argument for backlight_device_register to link the class device to
real device object.  The platform specific driver should find a way to get the
real device object for their video device.

[akpm@osdl.org: build fix]
[akpm@osdl.org: fix msi-laptop.c]
Signed-off-by: Luming Yu <Luming.yu@intel.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 27597c576eff..1d97cdf6f382 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -190,8 +190,10 @@ static int fb_notifier_callback(struct notifier_block *self,
  * Creates and registers new backlight class_device. Returns either an
  * ERR_PTR() or a pointer to the newly allocated device.
  */
-struct backlight_device *backlight_device_register(const char *name, void *devdata,
-                                                   struct backlight_properties *bp)
+struct backlight_device *backlight_device_register(const char *name,
+        struct device *dev,
+        void *devdata,
+        struct backlight_properties *bp)
 {
         int i, rc;
         struct backlight_device *new_bd;
@@ -206,6 +208,7 @@ struct backlight_device *backlight_device_register(const char *name, void *devda
         new_bd->props = bp;
         memset(&new_bd->class_dev, 0, sizeof(new_bd->class_dev));
         new_bd->class_dev.class = &backlight_class;
+        new_bd->class_dev.dev = dev;
         strlcpy(new_bd->class_dev.class_id, name, KOBJ_NAME_LEN);
         class_set_devdata(&new_bd->class_dev, devdata);