SND_CHN_OSS_MAX
m->channels > SND_CHN_OSS_MAX)
for (i = 0; i < SND_CHN_OSS_MAX && m->map[i].type != SND_CHN_T_MAX;
m->channels > SND_CHN_OSS_MAX || (*map & 0xffffffff00000000ULL))
for (i = 0; i < SND_CHN_OSS_MAX; i++) {