From: linuxtv <linuxtv@hubstar.net>
To: Jonathan Nieder <jrnieder@gmail.com>
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
Dan Carpenter <error27@gmail.com>,
Hans Verkuil <hverkuil@xs4all.nl>, Andi Huber <hobrom@gmx.at>,
Marlon de Boer <marlon@hyves.nl>,
Damien Churchill <damoxc@gmail.com>
Subject: Re: [PATCH v2.6.38 resend 0/7] cx88 deadlock and data races
Date: Sun, 01 May 2011 12:27:16 +0100 [thread overview]
Message-ID: <4DBD4394.20907@hubstar.net> (raw)
In-Reply-To: <20110501091710.GA18263@elie>
FYI I too experienced the problem of hanging and used the patch dated
6th April to get it working.
However I do have the problem that sound does not always work/come on.
Once it is started it stays, getting it started is not reliable.
On 01/05/11 10:17, Jonathan Nieder wrote:
> Hi,
>
> Since v2.6.37 (BKL removal), trying to open a cx88-blackbird driven
> MPEG device would hang. Ben Hutchings provided an initial patch[1] to
> fix that, and Andi Huber helped a lot in finding races that patch had
> missed. Ben requested that I take authorship of the series, so I've
> done so.
>
> These patches have visited the list twice before[2], towards the
> beginning of this month. No feedback from maintainers or reviewers
> --- I'm beginning to wonder if I have the right list. Luckily two
> people[3][4] experiencing this problem on bugzilla were kind enough to
> test the series and found it worked okay.
>
> Patches are against v2.6.38 (but they do not conflict with anything in
> media-tree/staging/for_v2.6.40). The intent is to include them in
> v2.6.40 if possible. A copy of these patches is also available for
> convenient fetching from
>
> git://repo.or.cz/linux-2.6/jrn.git cx88-locking
>
> Thoughts?
>
> Jonathan Nieder (7):
> [media] cx88: protect per-device driver list with device lock
> [media] cx88: fix locking of sub-driver operations
> [media] cx88: hold device lock during sub-driver initialization
> [media] cx88: protect cx8802_devlist with a mutex
> [media] cx88: gracefully reject attempts to use unregistered
> cx88-blackbird driver
> [media] cx88: don't use atomic_t for core->mpeg_users
> [media] cx88: don't use atomic_t for core->users
>
> drivers/media/video/cx88/cx88-blackbird.c | 41 +++++++++++++++-------------
> drivers/media/video/cx88/cx88-dvb.c | 2 +
> drivers/media/video/cx88/cx88-mpeg.c | 40 ++++++++++++++++++----------
> drivers/media/video/cx88/cx88-video.c | 5 ++-
> drivers/media/video/cx88/cx88.h | 11 +++++--
> 5 files changed, 61 insertions(+), 38 deletions(-)
>
> [1] http://bugs.debian.org/619827
> [2] http://thread.gmane.org/gmane.linux.kernel/1118815
> [3] https://bugzilla.kernel.org/show_bug.cgi?id=31792
> [4] https://bugzilla.kernel.org/show_bug.cgi?id=31962
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
next prev parent reply other threads:[~2011-05-01 12:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-01 9:17 [PATCH v2.6.38 resend 0/7] cx88 deadlock and data races Jonathan Nieder
2011-05-01 9:29 ` [PATCH 1/7] [media] cx88: protect per-device driver list with device lock Jonathan Nieder
2011-05-01 9:29 ` [PATCH 2/7] [media] cx88: fix locking of sub-driver operations Jonathan Nieder
2011-05-01 9:29 ` [PATCH 3/7] [media] cx88: hold device lock during sub-driver initialization Jonathan Nieder
2011-05-01 9:30 ` [PATCH 4/7] [media] cx88: protect cx8802_devlist with a mutex Jonathan Nieder
2011-05-01 9:30 ` [PATCH 5/7] [media] cx88: gracefully reject attempts to use unregistered cx88-blackbird driver Jonathan Nieder
2011-05-01 9:31 ` [PATCH 6/7] [media] cx88: don't use atomic_t for core->mpeg_users Jonathan Nieder
2011-05-01 9:31 ` [PATCH 7/7] [media] cx88: don't use atomic_t for core->users Jonathan Nieder
2011-05-01 11:27 ` linuxtv [this message]
2011-05-02 8:19 ` cx88 sound does not always work (Re: [PATCH v2.6.38 resend 0/7] cx88 deadlock and data races) Jonathan Nieder
2011-05-02 18:40 ` linuxtv
2011-05-04 9:09 ` hubstar
2011-05-04 9:23 ` cx88 sound does not always work Jonathan Nieder
2011-05-04 9:55 ` hubstar
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