[alsa-devel] [PATCH 00/14] SPDIF support

[Russell King - ARM Linux]

On Mon, Sep 02, 2013 at 03:47:13PM +0100, Mark Brown wrote:
> On Sat, Aug 31, 2013 at 08:34:31PM +0100, Russell King - ARM Linux wrote:
> > And here's the oops:
> 
> > Aug 10 22:06:17 cubox kernel: [<c030f724>] (snd_pcm_info+0xc8/0xd8) from [<c030f768>] (snd_pcm_info_user+0x34/0x9c)
> > Aug 10 22:06:17 cubox kernel: [<c030f768>] (snd_pcm_info_user+0x34/0x9c) from [<c030a67c>] (snd_pcm_control_ioctl+0x274/0x280)
> 
> > This is caused because substream->ops is NULL.  Why that's the case,
> > I don't know, but I believe the PCM which is trying to be operated on
> > is the one registered against the backend (by snd_pcm_new_internal).
> 
> Liam did provide you with a workaround for this one along with a
> suggested proper fix.  Have you had any success in using this
> workaround, or with implementing the proper fix for that matter?  I
> don't recall seeing any feedback on the results but perhaps I missed it.

I am not aware of any such patch.