Bug#655941: iwlagn: my wifi card doesn't works - Intel Corporation Centrino Wireless-N 1000 [8086:0084]

[Jonathan Nieder <jrnieder@gmail.com>]

tags 655941 + upstream patch moreinfo
quit

Hi Andrey,

Jonathan Nieder wrote:

> Excellent.  Next step is to test whatever patch upstream arrives at.

Ok, looks like there is a patch agreed upon now (attached).  Could you
test it?

It works like this:

 0. Prerequisites:

     apt-get install git build-essential

 1. Get a copy of the kernel:

	git clone -o stable \
	 git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git \
	 linux
	cd linux

    Or, if you already have a copy of the kernel, update it to include
    the latest point releases:

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

 2. Check out the linux-3.2.y branch and make sure it reproduces the
    problem.

	git checkout stable/linux-3.2.y
	cp /boot/config-$(uname -r) .config; # current configuration
	make localmodconfig; # optional: minimize configuration
	make deb-pkg; # optionally with -j<num> for parallel build
	dpkg -i ../<name of package>
	reboot

 3. Apply patch and see if it improves things.

	git am -3sc thepatch
	make deb-pkg; # maybe with -j4
	dpkg -i ../<name of package>
	reboot

From: Ike Panhc <ike.pan@canonical.com>
Date: Fri, 3 Feb 2012 16:46:39 +0800
Subject: acer-wmi: No wifi rfkill on Lenovo machines

We have several reports which says acer-wmi is loaded on ideapads
and register rfkill for wifi which can not be unblocked.

Since ideapad-laptop also register rfkill for wifi and it works
reliably, it will be fine acer-wmi is not going to register rfkill
for wifi once VPC2004 is found.

Also put IBM0068/LEN0068 in the list. Though thinkpad_acpi has no
wifi rfkill capability, there are reports which says acer-wmi also
block wireless on Thinkpad E520/E420.

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 drivers/platform/x86/acer-wmi.c |   30 +++++++++++++++++++++++++++++-
 1 files changed, 29 insertions(+), 1 deletions(-)

diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index b848277171a4..1e5290b5396d 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -679,6 +679,32 @@ static acpi_status AMW0_find_mailled(void)
 	return AE_OK;
 }
 
+static int AMW0_set_cap_acpi_check_device_found;
+
+static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
+	u32 level, void *context, void **retval)
+{
+	AMW0_set_cap_acpi_check_device_found = 1;
+	return AE_OK;
+}
+
+static const struct acpi_device_id norfkill_ids[] = {
+	{ "VPC2004", 0},
+	{ "IBM0068", 0},
+	{ "LEN0068", 0},
+	{ "", 0},
+};
+
+static int AMW0_set_cap_acpi_check_device(void)
+{
+	const struct acpi_device_id *id;
+
+	for (id = norfkill_ids; id->id[0]; id++)
+		acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
+				NULL, NULL);
+	return AMW0_set_cap_acpi_check_device_found;
+}
+
 static acpi_status AMW0_set_capabilities(void)
 {
 	struct wmab_args args;
@@ -692,7 +718,9 @@ static acpi_status AMW0_set_capabilities(void)
 	 * work.
 	 */
 	if (wmi_has_guid(AMW0_GUID2)) {
-		interface->capability |= ACER_CAP_WIRELESS;
+		if ((quirks != &quirk_unknown) ||
+		    !AMW0_set_cap_acpi_check_device())
+			interface->capability |= ACER_CAP_WIRELESS;
 		return AE_OK;
 	}
 
-- 
1.7.9