Re: [PATCH] acer-wmi: check wireless capability on AMW0_GUID2 machines

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On 01/11/2012 12:26 PM, joeyli wrote:
> 於 一,2012-01-09 於 22:15 +0000,Carlos Corbacho 提到:
>> On Monday 09 Jan 2012 18:00:24 joeyli wrote:
>>> I just checked and found I also have no AMW0_GUID2 machines on my hand,
>>> now.
>>> I have some questions about AMW0_GUID2:
>>>   + Why we enabled wireless capability in acer-wim if a non-acer machine has
>>> AMW0_GUID2 ?
>> IIRC, there were some bug reports on non-Acer hardware (I don't think this 
>> involved Acer hardware, but this was some time ago...) where the wireless 
>> detection wasn't working with this, but if we forced it on, it worked fine.
> Yes, in acer-wmi supported some non-acer machine by quirk and read EC
> register. That means we need find out EC register reflect to wifi RF
> state if we are lucky.
> Unfortunately, direct enable wireless capability causes some non-acer
> machines' wireless rfkill always disabled. e.g. Lenovo E520
> If we don't check the wireless capability, then they need manually add
> acer-wmi to backlist. On some lenovo machines, ideapad-laptop driver
> should support by lenovo's ACPI method.

I've got two reports which says after poking the ec register, the phy0 rfkill reports hard blocked by mistake. And few hours ago I get the third report says the similar issue. I will summary the report.

I am thinking about alternative way

Since we have thinkpad_acpi and ideapad_laptop, both of them have rfkill capability. If there is VPC2004/IBM0068/LEN0068 in DSDT, then it will be fine if we do not register rfkill in acer-wmi.

Any thought?
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