backlight: Add backlight_device parameter to check_fb
check_fb from backlight_ops lacks a reference to the backlight_device
that's being referred to. Add this parameter so a backlight_device
can be mapped to a single framebuffer, especially if the same driver
handles multiple devices on a single system.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
diff --git a/drivers/video/backlight/adx_bl.c b/drivers/video/backlight/adx_bl.c
index d769b0b..a683dd1 100644
--- a/drivers/video/backlight/adx_bl.c
+++ b/drivers/video/backlight/adx_bl.c
@@ -56,7 +56,7 @@
return brightness & 0xff;
}
-static int adx_backlight_check_fb(struct fb_info *fb)
+static int adx_backlight_check_fb(struct backlight_device *bldev, struct fb_info *fb)
{
return 1;
}
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 18829cf..b800cd4 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -38,7 +38,7 @@
mutex_lock(&bd->ops_lock);
if (bd->ops)
if (!bd->ops->check_fb ||
- bd->ops->check_fb(evdata->info)) {
+ bd->ops->check_fb(bd, evdata->info)) {
bd->props.fb_blank = *(int *)evdata->data;
if (bd->props.fb_blank == FB_BLANK_UNBLANK)
bd->props.state &= ~BL_CORE_FBBLANK;
diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index ee377d7..21cd866 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -47,7 +47,7 @@
int (*get_brightness)(struct backlight_device *);
/* Check if given framebuffer device is the one bound to this backlight;
return 0 if not, !=0 if it is. If NULL, backlight always matches the fb. */
- int (*check_fb)(struct fb_info *);
+ int (*check_fb)(struct backlight_device *, struct fb_info *);
};
/* This structure defines all the properties of a backlight */