linux-kernel - Re: Bug fix for pvrusb2 driver [was: Re: Kernel 2.6.26.5 -> 2.6.27.2 [USB REGRESSION] (USB -> D

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Date:	Fri, 24 Oct 2008 11:29:36 -0400
From:	"Michael Krufky" <mkrufky@...uxtv.org>
To:	"Mike Isely" <isely@...ox.com>
Cc:	"Justin Piszcz" <jpiszcz@...idpixels.com>,
	"Greg KH" <greg@...ah.com>,
	"Alan Stern" <stern@...land.harvard.edu>,
	"Oliver Neukum" <oliver@...kum.org>,
	"Kernel development list" <linux-kernel@...r.kernel.org>,
	"USB list" <linux-usb@...r.kernel.org>
Subject: Re: Bug fix for pvrusb2 driver [was: Re: Kernel 2.6.26.5 -> 2.6.27.2 [USB REGRESSION] (USB -> D_STATE)]

On Fri, Oct 24, 2008 at 1:43 AM, Mike Isely <isely@...ly.net> wrote:
> On Thu, 23 Oct 2008, Justin Piszcz wrote:
>
>>
>>
>> On Thu, 23 Oct 2008, Michael Krufky wrote:
>>
>> > On Thu, Oct 23, 2008 at 3:54 PM, Mike Isely <isely@...ly.net> wrote:
>> > > On Thu, 23 Oct 2008, Greg KH wrote:
>> > >
>> > > > On Thu, Oct 23, 2008 at 11:27:11AM -0500, Mike Isely wrote:
>> > > > > On Mon, 20 Oct 2008, Greg KH wrote:
>> > > > >
>> > >
>> > >   [...]
>> > >
>> > > > > >
>> > > > > > Will this patch be sent to the -stable group, to fix this regression
>> > > > > > in
>> > > > > > 2.6.27?  Or should they take Alan's fix instead?
>> > > > > >
>> > > > >
>> > > > > Greg:
>>
>> [ .. ]
>>
>> > The changeset in Linus tree is: c82732a42896364296599b0f73f01c5e3fd781ae
>> >
>> > Reviewed-by: Michael Krufky <mkrufky@...uxtv.org>
>> >
>> > Please wait on test results from Mike Isely or I confirming that
>> > digital mode still works properly before queuing this one.
>> >
>> > Thanks,
>> >
>> > Mike Krufky
>> >
>>
>> I only tested analog here for the 1950 FYI.
>>
>> Justin.
>
> Analog and digital HVR-1950 operation are unaffected by the reset fix
> here.  This is safe.
>
>  -Mike
>
> --
>
> Mike Isely
> isely @ pobox (dot) com
> PGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 B5 F5 C1 E8
>

I concur.  This patch is fine for -stable.  (I tested digital myself
last night / this morning and its fine)

Greg -- any chance you can slip this in to 2.6.27.4 ?  The driver is
entirely broken otherwise.

cherry-picked changeset attached...

Thanks,

Mike Krufky

View attachment "0001-V4L-pvrusb2-Fix-deadlock-problem.patch" of type "text/x-diff" (2856 bytes)