The 2.4.20-gentoo-r7 kernel has a bug: if you have more than one sound card, for only one of them will be created a /dev/dsp entry. Reproducible: Always Steps to Reproduce: 1. compile the kernel on a PC with more than a sound card Actual Results: Couldn't find more than one /dev/dsp, and so couldn't use my brand new cmipci card Expected Results: Devfs should have created two /dev/dsp entries Sorry for my poor english. If you go to the url above, you can find a patch. I've applied the patch MANUALLY to the gentoo- sources-2.4.20-r7, and it works. Here you are the patch I've made against the 2.4.20-gentoo-r7 kernel: --- linux-2.4.20-gentoo-r7/drivers/sound/sound_core.c.orig 2003-10- 10 17:30:07.000000000 +0000 +++ linux-2.4.20-gentoo-r7/drivers/sound/sound_core.c 2003-10-10 17:33:23.000000000 +0000 @@ -17,8 +17,9 @@ * plug into this. The fact they dont all go via OSS doesn't mean * they don't have to implement the OSS API. There is a lot of logic * to keeping much of the OSS weight out of the code in a compatibility - * module, but its up to the driver to rember to load it... + * module, but it's up to the driver to rember to load it... * + * The code provides a set of functions for registration of devices * by type. This is done rather than providing a single call so that * we can hide any future changes in the internals (eg when we go to @@ -174,10 +175,10 @@ return r; } - if (r == low) + if ( r < SOUND_STEP ) sprintf (name_buf, "%s", name); else - sprintf (name_buf, "%s%d", name, (r - low) / SOUND_STEP); + sprintf (name_buf, "%s%d", name, (r / SOUND_STEP)); s->de = devfs_register (devfs_handle, name_buf, DEVFS_FL_NONE, SOUND_MAJOR, s->unit_minor, S_IFCHR | mode, fops, NULL); @@ -232,17 +233,20 @@ int register_sound_special(struct file_operations *fops, int unit) { - char *name; + const int chain = (unit & 0x0F); + int max_unit = chain + 128; + const char *name; - switch (unit) { + switch (chain) { case 0: name = "mixer"; break; case 1: name = "sequencer"; + max_unit = unit + 1; break; case 2: - name = "midi00"; + name = "midi"; break; case 3: name = "dsp"; @@ -261,6 +265,7 @@ break; case 8: name = "sequencer2"; + max_unit = unit + 1; break; case 9: name = "dmmidi"; @@ -281,10 +286,10 @@ name = "admmidi"; break; default: - name = "unknown"; + name = "unknownX"; break; } - return sound_insert_unit(&chains[unit&15], fops, -1, unit, unit+1, + return sound_insert_unit(&chains[chain], fops, -1, unit, max_unit, name, S_IRUSR | S_IWUSR); } I hope this will be included in the next gentoo-sources Here you are my machine info: Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.1/specs Configured with: /var/tmp/portage/gcc-3.3.1-r4/work/gcc-3.3.1/configure --prefix=/usr -- bindir=/usr/i686-pc-linux-gnu/gcc-bin/3.3 --includedir=/usr/lib/gcc-lib/i686-pc-linux-gnu/ 3.3.1/include --datadir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3 --mandir=/usr/share/gcc- data/i686-pc-linux-gnu/3.3/man --infodir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/info -- enable-shared --host=i686-pc-linux-gnu --target=i686-pc-linux-gnu --with-system-zlib -- enable-languages=c,c++,f77,objc,java --enable-threads=posix --enable-long-long --disable- checking --enable-cstdio=stdio --enable-clocale=generic --enable-__cxa_atexit --enable- version-specific-runtime-libs --with-gxx-include-dir=/usr/lib/gcc-lib/i686-pc-linux-gnu/ 3.3.1/include/g++-v3 --with-local-prefix=/usr/local --enable-shared --enable-nls --without- included-gettext --disable-multilib Thread model: posix gcc version 3.3.1 20030916 (Gentoo Linux 3.3.1-r4, propolice) cdimage / # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 2.20GHz stepping : 4 cpu MHz : 2205.045 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm bogomips : 4404.01 cdimage / #
I'll add this in some time tomorrow...
In CVS.
