[PATCH 04/10] hid/hid-picolcd: Remove struct backlight_ops.check_fb

[Thomas Zimmermann <tzimmermann@suse.de>]

The driver sets struct fb_info.bl_dev to the correct backlight
device. Thus rely on the backlight core code to match backlight
and framebuffer devices, and remove the extra check_fb function
from struct backlight_ops.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: "Bruno Prémont" <bonbons@linux-vserver.org>
---
 drivers/hid/hid-picolcd_backlight.c | 7 -------
 drivers/hid/hid-picolcd_fb.c        | 4 ++++
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/hid/hid-picolcd_backlight.c b/drivers/hid/hid-picolcd_backlight.c
index 5bd2a8c4bbd66..08d16917eb60b 100644
--- a/drivers/hid/hid-picolcd_backlight.c
+++ b/drivers/hid/hid-picolcd_backlight.c
@@ -9,7 +9,6 @@
 
 #include <linux/hid.h>
 
-#include <linux/fb.h>
 #include <linux/backlight.h>
 
 #include "hid-picolcd.h"
@@ -39,15 +38,9 @@ static int picolcd_set_brightness(struct backlight_device *bdev)
 	return 0;
 }
 
-static int picolcd_check_bl_fb(struct backlight_device *bdev, struct fb_info *fb)
-{
-	return fb && fb == picolcd_fbinfo((struct picolcd_data *)bl_get_data(bdev));
-}
-
 static const struct backlight_ops picolcd_blops = {
 	.update_status  = picolcd_set_brightness,
 	.get_brightness = picolcd_get_brightness,
-	.check_fb       = picolcd_check_bl_fb,
 };
 
 int picolcd_init_backlight(struct picolcd_data *data, struct hid_report *report)
diff --git a/drivers/hid/hid-picolcd_fb.c b/drivers/hid/hid-picolcd_fb.c
index d7dddd99d325e..4500f6e03d32f 100644
--- a/drivers/hid/hid-picolcd_fb.c
+++ b/drivers/hid/hid-picolcd_fb.c
@@ -493,6 +493,10 @@ int picolcd_init_framebuffer(struct picolcd_data *data)
 	info->fix = picolcdfb_fix;
 	info->fix.smem_len   = PICOLCDFB_SIZE*8;
 
+#ifdef CONFIG_HID_PICOLCD_BACKLIGHT
+	info->bl_dev = data->backlight;
+#endif
+
 	fbdata = info->par;
 	spin_lock_init(&fbdata->lock);
 	fbdata->picolcd = data;
-- 
2.43.0