On 8/20/09, Karsten Jaeger <lists@xxxxxxxxx> wrote:
> Hi there,
>
> I've just ask in IRC for help and was ask to write it to the list.
>
> Last week I bought my EeePC 1005HA-M. It comes with Windows and Ubuntu
> Installation, everything works fine.
> Because my favorite OS is Debian I install it on the EeePC with
> Standard-Lenny and kernel linux-image-2.6.31-rc5, updating it to sid and
> everything worked fine. I updated it last sunday with latest sid and
> kernel linux-image-2.6.31-rc6, put in in sleep mode (which worked fine
> before) and want to restart it again on monday but nothing worked, I
> have a black screen and it do not return from sleep. So I do an cold reboot.
> After that, my wlan said, it have an segmentation fault and also gives
> the line back:
>
> SIOCSIFFLAGS: Unknown error 132
> Because I want to change some more, I do reinstalling it all, but since
> than, I can't get wlan to work again.
>
> As attachment I give you some files, that I do think are nessesary. If
> you need more, just give a hint.
That looks like the new rfkill error code. Basically it means the
wireless has been disabled. I guess the segmentation fault is a
userspace bug, unless you also see a BUG message in dmesg.
You should definitely be able to re-enable the wireless using the BIOS
setup screen... try these instructions:
<http://www.1-script.com/forums/wireless-card-and-camera-no-longer-work-or-show-in-hardware-article46509--25.htm>
Are you able to confirm that this happens just by upgrading the
kernel? If so, there's only one eeepc-laptop commit between -rc5 and
-rc6, and I'm afraid it's mine.
I re-wrote it again for 2.6.32 in a slightly more sensible way. If
we're lucky, your problem is fixed by the re-write and it can be
expedited for 2.6.31. I've attached the relevant changes as a test
patch; it should apply cleanly to 2.6.31-rc6.
Regards
Alan
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 222ffb8..1790103 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -143,7 +143,7 @@ struct eeepc_hotk {
struct rfkill *bluetooth_rfkill;
struct rfkill *wwan3g_rfkill;
struct hotplug_slot *hotplug_slot;
- struct work_struct hotplug_work;
+ struct mutex hotplug_lock;
};
/* The actual device the driver binds to */
@@ -661,24 +661,31 @@ static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
return 0;
}
-static void eeepc_hotplug_work(struct work_struct *work)
+static void eeepc_rfkill_hotplug(void)
{
struct pci_dev *dev;
- struct pci_bus *bus = pci_find_bus(0, 1);
- bool blocked;
+ struct pci_bus *bus;
+ bool blocked = eeepc_wlan_rfkill_blocked();
+
+ rfkill_set_sw_state(ehotk->wlan_rfkill, blocked);
+
+ mutex_lock(&ehotk->hotplug_lock);
+ if (ehotk->hotplug_slot == NULL)
+ goto out_unlock;
+
+ bus = pci_find_bus(0, 1);
if (!bus) {
pr_warning("Unable to find PCI bus 1?\n");
- return;
+ goto out_unlock;
}
- blocked = eeepc_wlan_rfkill_blocked();
if (!blocked) {
dev = pci_get_slot(bus, 0);
if (dev) {
/* Device already present */
pci_dev_put(dev);
- return;
+ goto out_unlock;
}
dev = pci_scan_single_device(bus, 0);
if (dev) {
@@ -694,7 +701,8 @@ static void eeepc_hotplug_work(struct work_struct *work)
}
}
- rfkill_set_sw_state(ehotk->wlan_rfkill, blocked);
+out_unlock:
+ mutex_unlock(&ehotk->hotplug_lock);
}
static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
@@ -702,7 +710,7 @@ static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
if (event != ACPI_NOTIFY_BUS_CHECK)
return;
- schedule_work(&ehotk->hotplug_work);
+ eeepc_rfkill_hotplug();
}
static void eeepc_hotk_notify(struct acpi_device *device, u32 event)
@@ -893,7 +901,7 @@ static int eeepc_hotk_resume(struct acpi_device *device)
rfkill_set_sw_state(ehotk->wlan_rfkill, wlan != 1);
- schedule_work(&ehotk->hotplug_work);
+ eeepc_rfkill_hotplug();
}
if (ehotk->bluetooth_rfkill)
@@ -1094,7 +1102,7 @@ static int eeepc_rfkill_init(struct device *dev)
{
int result = 0;
- INIT_WORK(&ehotk->hotplug_work, eeepc_hotplug_work);
+ mutex_init(&ehotk->hotplug_lock);
eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6");
eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
