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Date: Wed, 12 Nov 2014 10:17:45 +0900 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>, Darren Hart <dvhart@...ux.intel.com> Subject: [PATCH 3.14 195/203] acer-wmi: Add acpi_backlight=video quirk for the Acer KAV80 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hans de Goede <hdegoede@...hat.com> commit 183fd8fcd7f8afb7ac5ec68f83194872f9fecc84 upstream. The acpi-video backlight interface on the Acer KAV80 is broken, and worse it causes the entire machine to slow down significantly after a suspend/resume. Blacklist it, and use the acer-wmi backlight interface instead. Note that the KAV80 is somewhat unique in that it is the only Acer model where we fall back to acer-wmi after blacklisting, rather then using the native (e.g. intel) backlight driver. This is done because there is no native backlight interface on this model. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1128309 Signed-off-by: Hans de Goede <hdegoede@...hat.com> Signed-off-by: Darren Hart <dvhart@...ux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/platform/x86/acer-wmi.c | 11 +++++++++++ 1 file changed, 11 insertions(+) --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -570,6 +570,17 @@ static const struct dmi_system_id video_ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"), }, }, + { + /* + * Note no video_set_backlight_video_vendor, we must use the + * acer interface, as there is no native backlight interface. + */ + .ident = "Acer KAV80", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"), + }, + }, {} }; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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