At Wed, 21 Jan 2004 13:55:53 +0100, p z oooo wrote: > > Hi, > > When I remove control through hwdep layer on emu10k1 > driver when in use by oss emulation I got oops. > This is because oss emulation holds pointer to this control. > Is there any api to disable an then enable oss emulation or > only proc interface ???
hmm weird, the access to ctl elements in mixer_oss.c is restricted with card->controls_rwsem. since snd_emu10k1_del_controls issues down_write() for it, it must be safe... Takashi > > Jan 20 20:53:52 localhost kernel: Unable to handle kernel NULL > pointer dereference at virtual address 000000b0 > Jan 20 20:53:52 localhost kernel: printing eip: > Jan 20 20:53:52 localhost kernel: e8edc94b > Jan 20 20:53:52 localhost kernel: *pde = 0567b067 > Jan 20 20:53:52 localhost kernel: *pte = 00000000 > Jan 20 20:53:52 localhost kernel: Oops: 0000 > Jan 20 20:53:52 localhost kernel: snd-pcm-oss snd-mixer-oss evdev > tuner saa7134 video-buf v4l2-common v4l1-compat ir-common videodev > w83781d i2c-isa eeprom i2c-proc i2c-viapro i2c-dev i2c-core > Jan 20 20:53:52 localhost kernel: CPU: 0 > Jan 20 20:53:52 localhost kernel: EIP: 0060:[<e8edc94b>] > Tainted: P > Jan 20 20:53:52 localhost kernel: EFLAGS: 00010286 > Jan 20 20:53:52 localhost kernel: > Jan 20 20:53:52 localhost kernel: EIP is at snd_emu10k1_gpr_ctl_info > [snd-emu10k1] 0xb (2.4.22-1.2115.nptlcustom) > Jan 20 20:53:52 localhost kernel: eax: daf33cc0 ebx: daf33cc0 > ecx: daa8ce00 edx: 00000000 > Jan 20 20:53:52 localhost kernel: esi: daa8ce00 edi: c5ff8000 > ebp: d4795f60 esp: d4795ef4 > Jan 20 20:53:52 localhost kernel: ds: 0068 es: 0068 ss: 0068 > Jan 20 20:53:52 localhost kernel: Process xine (pid: 4800, > stackpage=d4795000) > Jan 20 20:53:52 localhost kernel: Stack: e9040ded daf33cc0 daa8ce00 > 00000000 00000000 d4795f64 dd93a0e4 dd2bf400 > Jan 20 20:53:52 localhost kernel: dadb7000 dadb714c c9a9d200 > e90411d7 c9a9d200 dd93a0e4 daf33cc0 d4795f60 > Jan 20 20:53:52 localhost kernel: d4795f64 dffef300 dd93a0e4 > c9a9d200 c52ae540 c9a9d200 e90406cf c9a9d200 > Jan 20 20:53:52 localhost kernel: Call Trace: [<e9040ded>] > snd_mixer_oss_get_volume1_vol [snd-mixer-oss] 0x6d (0xd4795ef4) > Jan 20 20:53:52 localhost kernel: [<e90411d7>] > snd_mixer_oss_get_volume1 [snd-mixer-oss] 0x207 (0xd4795f20) > Jan 20 20:53:52 localhost kernel: [<e90406cf>] > snd_mixer_oss_get_volume [snd-mixer-oss] 0x9f (0xd4795f4c) > Jan 20 20:53:52 localhost kernel: [<e904086d>] snd_mixer_oss_ioctl1 > [snd-mixer-oss] 0xcd (0xd4795f70) > Jan 20 20:53:52 localhost kernel: [<e9040b30>] snd_mixer_oss_ioctl > [snd-mixer-oss] 0x0 (0xd4795f90) > Jan 20 20:53:52 localhost kernel: [<c015570c>] sys_ioctl [kernel] > 0xbc (0xd4795f94) > Jan 20 20:53:52 localhost kernel: [<c014561a>] sys_open [kernel] 0x8a > (0xd4795fa8) > Jan 20 20:53:52 localhost kernel: [<c01099df>] system_call [kernel] > 0x33 (0xd4795fc0) > Jan 20 20:53:52 localhost kernel: > Jan 20 20:53:52 localhost kernel: > Jan 20 20:53:52 localhost kernel: Code: 8b 82 b0 00 00 00 85 c0 75 09 > 83 ba b4 00 00 00 01 74 22 c7 > > > > ____________________________________ > http://www.logofun.pobox.sk - urobte radost svojmu telefonu > > > > ------------------------------------------------------- > The SF.Net email is sponsored by EclipseCon 2004 > Premiere Conference on Open Tools Development and Integration > See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. > http://www.eclipsecon.org/osdn > _______________________________________________ > Alsa-devel mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/alsa-devel > ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
