This is a note to let you know that I've just added the patch titled
acer-wmi: Add acpi_backlight=video quirk for the Acer KAV80
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acer-wmi-add-acpi_backlight-video-quirk-for-the-acer-kav80.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 183fd8fcd7f8afb7ac5ec68f83194872f9fecc84 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Wed, 22 Oct 2014 16:06:38 +0200
Subject: acer-wmi: Add acpi_backlight=video quirk for the Acer KAV80
From: Hans de Goede <hdegoede@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Darren Hart <dvhart@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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"),
+ },
+ },
{}
};
Patches currently in stable-queue which might be from hdegoede@xxxxxxxxxx are
queue-3.14/input-i8042-quirks-for-fujitsu-lifebook-a544-and-lifebook-ah544.patch
queue-3.14/usb-do-not-allow-usb_alloc_streams-on-unconfigured-devices.patch
queue-3.14/input-i8042-add-noloop-quirk-for-asus-x750ln.patch
queue-3.14/acer-wmi-add-acpi_backlight-video-quirk-for-the-acer-kav80.patch
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