[PATCH 4/4] platform/x86: thinkpad_acpi: Use backlight helper

[Stephen Kitt]

Instead of retrieving the backlight brightness in struct
backlight_properties manually, and then checking whether the backlight
should be on at all, use backlight_get_brightness() which does all
this and insulates this from future changes.

Signed-off-by: Stephen Kitt <steve@xxxxxxx>
Cc: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx>
Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
Cc: Mark Gross <markgross@xxxxxxxxxx>
Cc: ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: platform-driver-x86@xxxxxxxxxxxxxxx
---
 drivers/platform/x86/thinkpad_acpi.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index e6cb4a14cdd4..a9337bd1d125 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6796,10 +6796,7 @@ static int brightness_set(unsigned int value)
 
 static int brightness_update_status(struct backlight_device *bd)
 {
-	unsigned int level =
-		(bd->props.fb_blank == FB_BLANK_UNBLANK &&
-		 bd->props.power == FB_BLANK_UNBLANK) ?
-				bd->props.brightness : 0;
+	int level = backlight_get_brightness(bd);
 
 	dbg_printk(TPACPI_DBG_BRGHT,
 			"backlight: attempt to set level to %d\n",
-- 
2.30.2