From: Mark Brown <broonie@kernel.org>
To: Jerome Brunet <jbrunet@baylibre.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>,
alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
patchwork-bot+notify@kernel.org
Subject: Re: [PATCH v2 2/4] ASoC: hdmi-codec: remove reference to the current substream
Date: Wed, 8 May 2019 17:57:58 +0900 [thread overview]
Message-ID: <20190508085758.GE14916@sirena.org.uk> (raw)
In-Reply-To: <fd633a5597703f557d75e43c14213699efe295f0.camel@baylibre.com>
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On Wed, May 08, 2019 at 10:08:44AM +0200, Jerome Brunet wrote:
> On Wed, 2019-05-08 at 16:00 +0900, Mark Brown wrote:
> > The advantage of mutexes is that they are very simple and clear to
> > reason about. It is therefore unclear that this conversion to use
> > atomic variables is an improvement, they're generally more complex
> > to reason about and fragile.
> The point of this patch is not to remove the mutex in favor of atomic
> operations
Sure, but you mixed in a conversion to atomic operations as well.
> I can put back mutex to protect the flag if you prefer.
> Another solution would be to use the mutex as the 'busy' flag.
> Get the ownership of the hdmi using try_lock() in startup() and
> release it in shutdown()
> Would you have a preference Mark ?
Probably using a mutex for the flag is clearer. I'd rather keep things
as simple as absolutely possible to avoid people making mistakes in
future.
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next prev parent reply other threads:[~2019-05-08 8:58 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-06 9:58 [PATCH v2 0/4] ASoC: hdmi-codec: fixes and improvements Jerome Brunet
2019-05-06 9:58 ` [PATCH v2 1/4] ASoC: hdmi-codec: remove function name debug traces Jerome Brunet
2019-05-08 6:50 ` Mark Brown
2019-05-08 8:08 ` Jerome Brunet
2019-05-08 9:01 ` Applied "ASoC: hdmi-codec: remove function name debug traces" to the asoc tree Mark Brown
2019-05-08 9:01 ` Mark Brown
2019-05-06 9:58 ` [PATCH v2 2/4] ASoC: hdmi-codec: remove reference to the current substream Jerome Brunet
2019-05-08 7:00 ` Mark Brown
2019-05-08 8:08 ` Jerome Brunet
2019-05-08 8:57 ` Mark Brown [this message]
2019-05-09 8:11 ` Jerome Brunet
2019-05-12 8:27 ` Mark Brown
2019-05-08 9:01 ` Applied "ASoC: hdmi-codec: remove reference to the current substream" to the asoc tree Mark Brown
2019-05-08 9:01 ` Mark Brown
2019-05-06 9:58 ` [PATCH v2 3/4] ASoC: hdmi-codec: remove reference to the dai drivers in the private data Jerome Brunet
2019-05-08 9:01 ` Applied "ASoC: hdmi-codec: remove reference to the dai drivers in the private data" to the asoc tree Mark Brown
2019-05-08 9:01 ` Mark Brown
2019-05-06 9:58 ` [PATCH v2 4/4] ASoC: hdmi-codec: remove ops dependency on the dai id Jerome Brunet
2019-05-08 9:01 ` Applied "ASoC: hdmi-codec: remove ops dependency on the dai id" to the asoc tree Mark Brown
2019-05-08 9:01 ` Mark Brown
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