[alsa-devel] [PATCH v2 2/4] ASoC: hdmi-codec: remove reference to the current substream

[Mark Brown]

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.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: not available
URL: <http://mailman.alsa-project.org/pipermail/alsa-devel/attachments/20190508/14f1de82/attachment.sig>