On Mon, 2010-02-22 at 23:51 +0000, Fernando Lopez-Lezcano wrote:
On Tue, 2010-02-16 at 17:58 -0800, Fernando Lopez-Lezcano wrote:
Hey, has anyone been seeing strange behavior from this combination?
kernel 2.6.31.x rt20 + alsa 1.0.22 userland RME card (pcmcia card + multiface)
hdspmixer is not doing the right thing (does not initialize the card in a way in which playback works), it does not see the hwdep interface (or something like that) and disables metering,
[MUNCH]
I have been trying to see if I can figure _anything_ out of this...
A diff of 2.6.29 (last known working) against 2.6.31.12 reveals something that might have an influence on the problem:
in snd_hdsp_create_hwdep there are two lines added:
- hw->ops.open = snd_hdsp_hwdep_dummy_op;
Hmmm, looks like snd_hdsp_hwdep_dummy_op is not passing back the hdsp->hwdep structure to the open call at all (returning 0 is not enough from the description of the alsa api). That would explain what is happening, most probably no ioctls are found...
Am I on the right track? -- Fernando
hw->ops.ioctl = snd_hdsp_hwdep_ioctl;
- hw->ops.release = snd_hdsp_hwdep_dummy_op;
And snd_hdsp_hwdep_dummy_op just returns 0...
Other differences between the two files (not that many) seem irrelevant to me.
I imagine this is what is causing the difference in behavior (hwdep fails). Any suggestions on what I could try to fix this?
Thanks for any help!