linux-kernel - Re: [PATCH] acer-wmi: blacklist Thinkpad edge E520

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Date:	Mon, 24 Oct 2011 19:13:29 -0400
From:	Dave Jones <davej@...hat.com>
To:	joeyli <jlee@...e.com>
Cc:	Ike Panhc <ike.pan@...onical.com>,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
	Matthew Garrett <mjg@...hat.com>, Joey Lee <jlee@...ell.com>
Subject: Re: [PATCH] acer-wmi: blacklist Thinkpad edge E520

On Tue, Oct 25, 2011 at 06:22:47AM +0800, joeyli wrote:
 > 於 四，2011-10-13 於 14:51 +0800，Ike Panhc 提到：
 > > BugLink: http://launchpad.net/bugs/836865
 > > BugLink: http://launchpad.net/bugs/826784
 > > 
 > > There are reports say that acer-wmi is loaded on Thinkpad E520 which
 > > cause wireless connection hard blocked and we can not unblock it. It
 > > will be better not to load acer-wmi on this machine.
 > > 
 > > Signed-off-by: Ike Panhc <ike.pan@...onical.com>
 > > ---
 > >  drivers/platform/x86/acer-wmi.c |    7 +++++++
 > >  1 files changed, 7 insertions(+), 0 deletions(-)
 > > 
 > > diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
 > > index af2bb20..dc9a116 100644
 > > --- a/drivers/platform/x86/acer-wmi.c
 > > +++ b/drivers/platform/x86/acer-wmi.c
 > > @@ -325,6 +325,13 @@ static struct dmi_system_id __devinitdata acer_blacklist[] = {
 > >  			DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 > >  		},
 > >  	},
 > > +	{
 > > +		.ident = "Lenovo Thinkpad Edge E520",
 > > +		.matches = {
 > > +			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 > > +			DMI_MATCH(DMI_PRODUCT_NAME, "114320U"),
 > > +		},
 > > +	},
 > >  	{}
 > >  };
 > >  
 > 
 > Unfortunately didn't see any useful EC register for unblock wifi rfkill in acer-wmi, let's 
 > add this device to blacklist.
 > 
 > Signed-off-by: Lee, Chun-Yi <jlee@...ell.com>

We've seen similar reports from other Lenovo machines & acer-wmi in Fedora bugzilla.
https://bugzilla.redhat.com/show_bug.cgi?id=674353 for example has people reporting
the b450 and V460 also suffer the same issue.

(There are also a bunch of bug reports from the other *-wmi modules on various hardware.
It seems these modules really upset rfkill).

	Dave

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