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! _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
