linux-kernel - Re: [PATCH 0/3] Fix streaming on/off logic

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Message-ID: <ce0bf57c-7d96-5c33-6ab5-a64d772dee21@selasky.org>
Date:   Tue, 21 Dec 2021 07:34:27 +0100
From:   Hans Petter Selasky <hps@...asky.org>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com, pb@...uxtv.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [PATCH 0/3] Fix streaming on/off logic

On 9/26/21 22:51, Mauro Carvalho Chehab wrote:
> As discussed on:
> 	https://github.com/hselasky/webcamd/issues/16
> 
> the dib0700 had a regression on Kernel 2.6.39. Such regression didn't
> affect most devices, in practice, as it seems to happen only under
> certain circunstances.
> 
> Michael came up with a solution for the issue (already submitted to
> the ML) but let's take the opportunity to do a cleanup, as the resulting
> code was still touching both adapters when an stream off command
> was issued to one adapter, turning on the other one.
> 
> After the change, each adapter is idependently controlled by
> a separate bit, as can be shown when its debug message
> is turned on (tested on a dual-adapter device: Hauppauge
> WinTV Nova TD):
> 
> [608855.124780] adapter 1, streaming ON: 0f 10 12
> [608868.189827] adapter 0, streaming ON: 0f 10 13
> [608879.584330] adapter 1, streaming OFF: 0f 00 11
> [608887.014772] adapter 0, streaming OFF: 0f 00 10
> 
> Mauro Carvalho Chehab (2):
>    media: dib0700: cleanup start/stop streaming logic
>    media: dib0700: Only touch one bit when start/stop an adapter
> 
> Michael Kuron (1):
>    media: dib0700: fix undefined behavior in tuner shutdown
> 
>   drivers/media/usb/dvb-usb/dib0700_core.c | 28 +++++++++++-------------
>   1 file changed, 13 insertions(+), 15 deletions(-)
> 

Were these patches upstreamed yet?

--HPS