platform/x86: fujitsu-laptop: do not log set_lcd_level() failures in bl_update_status()

Any set_lcd_level() call can fail for one of two reasons: either
requested brightness is outside the allowed range or the ACPI method
used for setting brightness level is not available.  For
bl_update_status(), the first case is handled by backlight core, which
means bl_update_status() will not even be called if requested brightness
is outside the allowed range.  The second case will be logged anyway by
set_lcd_level() itself, so there is no point in generating another
message in bl_update_status().  Remove the superfluous debug message
along with a local variable that is now redundant.
Signed-off-by: NMichał Kępień <kernel@kempniu.pl>
Reviewed-by: NJonathan Woithe <jwoithe@just42.net>
Signed-off-by: NDarren Hart (VMware) <dvhart@infradead.org>

drivers/platform/x86/fujitsu-laptop.c

@@ -428,18 +428,12 @@ static int bl_get_brightness(struct backlight_device *b)
 
 static int bl_update_status(struct backlight_device *b)
 {
-	int ret;
 	if (b->props.power == FB_BLANK_POWERDOWN)
 		call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
 	else
 		call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
 
-	ret = set_lcd_level(b->props.brightness);
-	if (ret != 0)
-		vdbg_printk(FUJLAPTOP_DBG_ERROR,
-			"Unable to adjust LCD brightness, error code %i\n",
-			ret);
-	return ret;
+	return set_lcd_level(b->props.brightness);
 }
 
 static const struct backlight_ops fujitsu_bl_ops = {