[PATCH v3 3/3] backlight: aw99706: Honor the core blank state in update_status()

[Junjie Cao <junjie.cao@intel.com>]

From: Junjie Cao <junjie.cao@linux.dev>

update_status() passes props.brightness straight to the hardware and
ignores the power/blank state tracked by the core. Writing 4 to the
bl_power sysfs attribute or blanking the framebuffer therefore leaves
the backlight lit.

Use backlight_get_brightness(), which returns 0 while the device is
blanked.

Fixes: 147b38a5ad06 ("backlight: aw99706: Add support for Awinic AW99706 backlight")
Cc: stable@vger.kernel.org
Signed-off-by: Junjie Cao <junjie.cao@linux.dev>
---
 drivers/video/backlight/aw99706.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/backlight/aw99706.c b/drivers/video/backlight/aw99706.c
index 6ec49b6cb14c..c4a66b59ecf1 100644
--- a/drivers/video/backlight/aw99706.c
+++ b/drivers/video/backlight/aw99706.c
@@ -340,7 +340,7 @@ static int aw99706_bl_update_status(struct backlight_device *bl)
 {
 	struct aw99706_device *aw = bl_get_data(bl);
 
-	return aw99706_update_brightness(aw, bl->props.brightness);
+	return aw99706_update_brightness(aw, backlight_get_brightness(bl));
 }
 
 static const struct backlight_ops aw99706_bl_ops = {
-- 
2.43.0