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 <[email protected]> --- drivers/platform/x86/asus-wmi.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index 3c6cced..70aec19 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()) { -- 2.0.0 -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
