Bug#666568: [acer_wmi] rfkill blocks WLAN on Sony VAIO VPCYA1V9E, regardless of hardware switch

[Jonathan Nieder <jrnieder@gmail.com>]

# basic hardware support
severity 666568 important
tags 666568 + patch upstream moreinfo
quit

Hi,

Kalle Olavi Niemitalo wrote:

> On Sony VAIO VPCYA1V9E, the acer-wmi module is automatically
> loaded.  It then misdetects an rfkill switch and keeps WLAN
> disabled all the time.  I can reenable WLAN by unloading the
> acer-wmi module.

Please test the attached patch, following instructions from [1] or the
following instructions:

 0. Prerequisites.

	apt-get install git build-essential

 1. Get a copy of the kernel history if you don't already have it.

	git clone \
	  git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

 2. Fetch point releases.

	cd linux
	git remote add -f stable \
	  git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git

 3. Configure, build, and test 3.2.y.

	git checkout stable/linux-3.2.y
	cp /boot/config-$(uname -r) .config; # current configuration
	# Make sure the acer-wmi is loaded so it doesn't get configured out
	# by the next step.
	modprobe acer-wmi
	make localmodconfig; # optional: minimize configuration
	make deb-pkg; # optionally with -j<num> for parallel build
	dpkg -i ../<name of package>; # as root
	reboot
	... test test test ...

 4. Hopefully it reproduces the bug.  So try the patch:

	cd linux
	git cherry-pick -x -s 5719b81988f3
	make deb-pkg; # maybe with -j4
	dpkg -i ../<name of package>
	reboot
	... test test test ...

Hope that helps,
Jonathan

[1] http://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official
or the corresponding page in the debian-kernel-handbook package

From: "Lee, Chun-Yi" <joeyli.kernel@gmail.com>
Date: Fri, 23 Mar 2012 12:36:44 +0800
Subject: acer-wmi: No wifi rfkill on Sony machines

commit 5719b81988f3c24ff694dc3a37e35b35630a3966 upstream.

The wireless rfkill should charged by sony-laptop but not acer-wmi.
So, add Sony's SNY5001 acpi device to blacklist in acer-wmi.

Tested on Sony Vaio

Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Mattia Dongili <malattia@linux.it>
Cc: Dimitris N <ddarlac@gmail.com>
Tested-by: Dimitris N <ddarlac@gmail.com>
Signed-off-by: Lee, Chun-Yi <jlee@suse.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 drivers/platform/x86/acer-wmi.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 1e5290b5396d..110e4af07640 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -692,6 +692,7 @@ static const struct acpi_device_id norfkill_ids[] = {
 	{ "VPC2004", 0},
 	{ "IBM0068", 0},
 	{ "LEN0068", 0},
+	{ "SNY5001", 0},	/* sony-laptop in charge */
 	{ "", 0},
 };
 
-- 
1.7.10.rc3