On Wed, 2006-06-14 at 08:30 -0600, Ross Wille wrote: > Hi, > > I have an ALSA sound driver working on an ARM platform running on a > 2.6.10 kernel. But when I ported this driver to the 2.6.16.19 kernel > it does not work. The device nodes show up, but when I try to call any > of the OSS-emulation ioctls (for example, SNDCTL_DSP_SETFMT) I get a > -EINVAL return code from the ioctl call and a "No usable accesses" > error gets printed to the console. (I do have OSS emulation enabled in > the kernel.) > The only problem I've experienced lately with ALSA on ARM is this gcc optimisation bug:- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27363 This only applies to gcc 4.1.0 (it's fixed in 4.1.1) and caused the SNDRV_PCM_FORMAT_* refinement (in sound/core/pcm_native.c) to break. A few things to also check:- o Does aplay/arecord and alsamixer work (they don't use OSS emulation) ? o Does the Dummy driver work ? HTH Liam _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
