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| author | Hans de Goede <hdegoede@redhat.com> | 2014-07-08 10:47:21 +0200 |
|---|---|---|
| committer | Matthew Garrett <matthew.garrett@nebula.com> | 2014-08-16 01:23:50 -0700 |
| commit | d8c66f62992dac3a92cbc5f16791557100c7a068 (patch) | |
| tree | e36c0ca00da555d77a4547bb7733edff0f2967ee | |
| parent | ce363c2bcb2303e7fad3a79398db739c6995141b (diff) | |
| download | linux-d8c66f62992dac3a92cbc5f16791557100c7a068.tar.gz linux-d8c66f62992dac3a92cbc5f16791557100c7a068.tar.bz2 linux-d8c66f62992dac3a92cbc5f16791557100c7a068.zip | |
asus-wmi: Disable acpi-video backlight on desktop machines
Some Asus motherboards for desktop PC-s export an acpi-video interface
advertising backlight support. Test the dmi chassis-type and tell acpi-video
to not register a backlight interface on desktops.
https://bugzilla.redhat.com/show_bug.cgi?id=1097436
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
| -rw-r--r-- | drivers/platform/x86/asus-wmi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index 3c6ccedc82b6..70aec19f50f3 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" @@ -1734,6 +1735,7 @@ 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 +1772,11 @@ 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()) { |