1 files changed, 10 insertions, 6 deletions

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 3c6ccedc82b6..21fc932da3a1 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -46,6 +46,7 @@
 #include <linux/platform_device.h>
 #include <linux/thermal.h>
 #include <linux/acpi.h>
+#include <linux/dmi.h>
 #include <acpi/video.h>
 
 #include "asus-wmi.h"
@@ -554,7 +555,7 @@ static int asus_wmi_led_init(struct asus_wmi *asus)
                         goto error;
         }
 
-        if (wlan_led_presence(asus) && (asus->driver->quirks->wapf == 4)) {
+        if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
                 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
 
                 asus->wlan_led.name = "asus::wlan";
@@ -884,7 +885,7 @@ static int asus_new_rfkill(struct asus_wmi *asus,
                 return -EINVAL;
 
         if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
-                        (asus->driver->quirks->wapf == 4))
+                        (asus->driver->quirks->wapf > 0))
                 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
 
         rfkill_init_sw_state(*rfkill, !result);
@@ -1270,10 +1271,7 @@ static int asus_wmi_backlight_init(struct asus_wmi *asus)
         int power;
 
         max = read_brightness_max(asus);
-
-        if (max == -ENODEV)
-                max = 0;
-        else if (max < 0)
+        if (max < 0)
                 return max;
 
         power = read_backlight_power(asus);
@@ -1734,6 +1732,7 @@ static int asus_wmi_add(struct platform_device *pdev)
         struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
         struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
         struct asus_wmi *asus;
+        const char *chassis_type;
         acpi_status status;
         int err;
         u32 result;
@@ -1770,6 +1769,11 @@ static int asus_wmi_add(struct platform_device *pdev)
         if (err)
                 goto fail_rfkill;
 
+        /* Some Asus desktop boards export an acpi-video backlight interface,
+           stop this from showing up */
+        chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
+        if (chassis_type && !strcmp(chassis_type, "3"))
+                acpi_video_dmi_promote_vendor();
         if (asus->driver->quirks->wmi_backlight_power)
                 acpi_video_dmi_promote_vendor();
         if (!acpi_video_backlight_support()) {