linux-kernel - Re: Linux 2.6.39.1

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Message-ID: <alpine.LNX.2.00.1106081740040.22872@pobox.suse.cz>
Date:	Wed, 8 Jun 2011 17:41:03 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Chase Douglas <chase.douglas@...onical.com>
Cc:	Ed Tomlinson <edt@....ca>, Greg KH <gregkh@...e.de>,
	linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Linux 2.6.39.1

On Wed, 8 Jun 2011, Chase Douglas wrote:

> > I also played a bit with 1.1 CSR dongle and couldn't find any mask that would
> > be accepted. I think this command can be left out for older than 1.2 devices.
> > 
> > Following patch should do it. Could you verify it. I don't have access to old
> > hw ATM.
> > 
> > diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
> > index 19cd4af..86d1e26 100644
> > --- a/net/bluetooth/hci_event.c
> > +++ b/net/bluetooth/hci_event.c
> > @@ -477,14 +477,16 @@ static void hci_setup_event_mask(struct hci_dev *hdev)
> >          * command otherwise */
> >         u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 };
> >  
> > -       /* Events for 1.2 and newer controllers */
> > -       if (hdev->lmp_ver > 1) {
> > -               events[4] |= 0x01; /* Flow Specification Complete */
> > -               events[4] |= 0x02; /* Inquiry Result with RSSI */
> > -               events[4] |= 0x04; /* Read Remote Extended Features Complete */
> > -               events[5] |= 0x08; /* Synchronous Connection Complete */
> > -               events[5] |= 0x10; /* Synchronous Connection Changed */
> > -       }
> > +       /* CSR 1.1 dongles does not accept any bitfield so don't try to set
> > +        * any event mask for pre 1.2 devices */
> > +       if (hdev->lmp_ver <= 1)
> > +               return;
> > +
> > +       events[4] |= 0x01; /* Flow Specification Complete */
> > +       events[4] |= 0x02; /* Inquiry Result with RSSI */
> > +       events[4] |= 0x04; /* Read Remote Extended Features Complete */
> > +       events[5] |= 0x08; /* Synchronous Connection Complete */
> > +       events[5] |= 0x10; /* Synchronous Connection Changed */
> >  
> >         if (hdev->features[3] & LMP_RSSI_INQ)
> >                 events[4] |= 0x04; /* Inquiry Result with RSSI */
> 
> Where did this patch come from? I don't see it in Linus' tree. If this
> patch is merged, I can test the a new kernel out to see if we should
> back out the commit from Jiri. However, right now my magic trackpad
> (which has the same issue as the magic mouse) works fine on plain 2.6.39.1.

It might be because of different versions of CSR dongles you guys might 
have.

I am still a bit lost here -- Ed, do you say that with the patch above, 
and with my patch reverted, your device is working properly?

Chase, could you please try the same on your side? Thanks,

-- 
Jiri Kosina
SUSE Labs
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