[alsa-devel] bug: reconfig broken on kernel 4.5

[Takashi Iwai]

On Tue, 10 May 2016 11:47:56 +0200,
Jochen Henneberg wrote:
> 
> On Di, 2016-05-10 at 10:36 +0200, Takashi Iwai wrote:
> > On Mon, 09 May 2016 16:11:46 +0200,
> > Takashi Iwai wrote:
> > > 
> > > On Mon, 09 May 2016 10:22:49 +0200,
> > > Jochen Henneberg wrote:
> > > > 
> > > > Hi,
> > > > 
> > > > it looks as if 'reconfig' feature is broken since the sysfs attributes
> > > > have been moved to device attributes. In hda_sysfs.c:reconfig_codec()
> > > > the device is cleared with snd_hda_codec_reset() which calls
> > > > snd_hdac_device_unregister() which removes the sysfs entries (including
> > > > the currently in-use 'reconfig'), the re-registration fails afterwards
> > > > in snd_hda_codec_build_controls().
> > > > I am not sure when things got broken, but snd_hda_codec_reset()
> > > > called from reconfig_codec() unregisters the device and removes the
> > > > sysfs entries where in the past it only stripped all configurations
> > > > (pcms, controls ...) from the device.
> > > 
> > > Hrm, OK, something got broken indeed there.  I'll check it later.
> > 
> > Actually it's not about the sysfs, but rather the superfluous calls of
> > snd_hda_codec_build_controls() & co.  The fix patch is below.
> > 
> 
> Sorry for the confusion, I did not notice. Anyway, I have tested the
> patch with 4.5, changed codec hints, reconfig and no error messages and
> the changed hints have been respected after reconfig, looks good for me.

The patch has been merged now.


thanks,

Takashi