Re: [PATCH] acer-wmi: No wifi rfkill on Lenovo machines

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Hi Ike, 

於 三,2012-01-25 於 10:14 +0800,Ike Panhc 提到:
> This patch has been tested on ideapad s205
> 
> User reports the first time try wireless hard/soft all blocked
> 
>   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/875659/comments/53
> 
> but the second try looks good.
> 
>   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/875659/comments/55
> 
> 

That will be better retest this patch after remove ac power and battery.

> On 01/25/2012 09:57 AM, Ike Panhc wrote:
> > 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@xxxxxxxxxxxxx>
> > ---
> >  drivers/platform/x86/acer-wmi.c |   29 ++++++++++++++++++++++++++++-
> >  1 files changed, 28 insertions(+), 1 deletions(-)
> > 
> > diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
> > index b848277..aaef8f8 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 = 0;
> > +
> > +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 +718,8 @@ static acpi_status AMW0_set_capabilities(void)
> >  	 * work.
> >  	 */
> >  	if (wmi_has_guid(AMW0_GUID2)) {
> > -		interface->capability |= ACER_CAP_WIRELESS;
> > +		if (!AMW0_set_cap_acpi_check_device())
> > +			interface->capability |= ACER_CAP_WIRELESS;

I suggest add the following logic (non-test) to pass quirks that were
already supported by acer-wmi:

	if ((quirk != &quirk_unknown) || !AMW0_set_cap_acpi_check_device())
		interface->capability |= ACER_CAP_WIRELESS;

That can keep acer-wmi still support Lenovo Ideapad S205 and Lenovo 3000 N200 by
quirks. Those quirks works fine before.

> >  		return AE_OK;
> >  	}
> >  
> 
> 


Thanks a lot!
Joey Lee

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