linux-kernel - Re: [char-misc 3.11 V2] mei: me: fix hardware reset flow

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Message-ID: <20130805052715.GC31808@kroah.com>
Date:	Mon, 5 Aug 2013 13:27:15 +0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	"Winkler, Tomas" <tomas.winkler@...el.com>
Cc:	"arnd@...db.de" <arnd@...db.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Shuah Khan <shuah.kh@...sung.com>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>
Subject: Re: [char-misc 3.11 V2] mei: me: fix hardware reset flow

On Tue, Jul 30, 2013 at 02:28:55PM +0000, Winkler, Tomas wrote:
> 
> > Subject: Re: [char-misc 3.11 V2] mei: me: fix hardware reset flow
> > 
> > On Tue, Jul 30, 2013 at 02:11:51PM +0300, Tomas Winkler wrote:
> > > Both H_IS and H_IE needs to be set to receive H_RDY interrupt
> > >
> > > 1. Assert H_IS to clear the interrupts during hw reset and use
> > > mei_me_reg_write instead of mei_hcsr_set as the later strips down the
> > > H_IS
> > >
> > > 2. fix interrupt disablement embarrassing typo
> > >   hcsr |= ~H_IE -> hcsr &= ~H_IE;
> > > this will remove the unwanted interrupt on power down
> > >
> > > 3. remove useless debug print outs
> > >
> > > Cc: Shuah Khan <shuah.kh@...sung.com>
> > > Cc: Konstantin Khlebnikov <khlebnikov@...nvz.org>
> > > Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
> > > ---
> > >
> > > V2: Fixed typo in Shuah email
> > >
> > > Hope this finally resolve the ME reset issue for all
> > 
> > Can I get a "Tested-by:" from someone to ensure that it really does solve the
> > problem?
> 
> Yes,  please wait for ack/test results. It works for me but
> unfortunately I cannot go over all  9 gens of  PCH and all their
> proliferations  where ME resides. 
> I'm putting some effort to have better legacy HW testing coverage but I'm not there yet.

So what happened here with this patch, does it solve the reported
problems?

thanks,

greg k-h
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