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rkidder
n00b
Joined: 16 Jul 2004
Posts: 14
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 Posted: Thu Feb 02, 2006 3:33 am Post subject: lirc device missing with updated udev |
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After an emerge -u world, udev no longer creates the device files for lirc. At least I think it's udev to blame. I upgraded from 070-r1 to 079-r1.
Prior to upgrading, the device was created at /dev/lirc/0 and a socket was created at /dev/lircd. The socket is still created (by the init script), and the lircd daemon is running with the arguement '-d /dev/lirc/0' just as it had before. Of course as soon as something tries to read an event from lirc, lircd crashes with an error that it can't read from /dev/lirc/0.
udev does appear to detect the modules loading. Running udevmonitor, I get the following output when I load 'lirc_dev':
| Code: | | UEVENT[1138848975.951288] add@/module/lirc_dev |
and when I load 'lirc_i2c' (I'm using a Hauppauge remote), I get the following:
| Code: | UEVENT[1138849007.384068] add@/module/lirc_i2c
UEVENT[1138849007.384119] add@/bus/i2c/drivers/i2c ir driver |
I tried downgrading udev back to the previous version, but that didn't help. Also, I verified my udev rules are:
| Code: | | KERNEL="lirc[0-9]*", NAME="lirc/%n" |
and that my modprobe.conf contains:
| Code: | | alias char-major-61-* lirc_i2c |
I'm running 2.6.14-gentoo-r2, but got the exact same results when I upgraded to 2.6.15-gentoo-r1.
Anyone have any other suggestions? |
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rkidder
n00b
Joined: 16 Jul 2004
Posts: 14
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| Posted: Thu Feb 02, 2006 1:11 pm Post subject: |
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Made a little progress on this (if you could call it that). I recompiled the ivtv module. I noticed it wasn't loading before and surmised that's why the device wasn't being created, because it depended on the ivtv device. Now, when I load the lirc module, it segfaults:
| Code: | lirc_dev: IR Remote Control driver registered, at major 61
lirc_i2c: chip found @ 0x18 (Hauppauge IR)
lirc_dev: lirc_register_plugin: sample_rate: 10
Unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
c01e9042
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: lirc_i2c lirc_dev ivtv snd_via82xx snd_mpu401_uart snd_rawmidi
CPU: 0
EIP: 0060:[<c01e9042>] Not tainted VLI
EFLAGS: 00010216 (2.6.15-gentoo-r1)
EIP is at vsnprintf+0x7a/0x49c
eax: 00000000 ebx: c9121af0 ecx: 00000000 edx: 000000d0
esi: ced9dd68 edi: c9121b80 ebp: d1088920 esp: ced9dd10
ds: 007b es: 007b ss: 0068
Process modprobe (pid: 26588, threadinfo=ced9c000 task=cf37fa10)
Stack: 00000286 00000084 00000000 c9121b03 c9121a80 fffffff4 c9121b80 d1088920
c025b6db c9121af0 00000014 00000000 ced9dd68 c141cc20 00000000 c141c570
d1086577 c9121b80 03d00000 00000000 d10876e9 00000000 00000000 00000000
Call Trace:
[<c025b6db>] class_device_create+0x6f/0x8d
[<d1086577>] lirc_register_plugin+0x312/0x3da [lirc_dev]
[<d108a980>] ir_attach+0x269/0x276 [lirc_i2c]
[<d108aa6d>] ir_probe+0xb4/0x2d3 [lirc_i2c]
[<c0110ec4>] activate_task+0x58/0x67
[<c02e653a>] i2c_add_driver+0x90/0xa7
[<d108acc1>] init_module+0x32/0x38 [lirc_i2c]
[<c012a45d>] sys_init_module+0xb5/0x1ad
[<c0102b9d>] syscall_call+0x7/0xb
Code: 24 24 8b 44 24 28 8d 44 03 ff 89 44 24 0c 89 d8 48 39 44 24 0c 73 10 89 da c7 44 24 0c ff ff ff ff f7 da 89 54 24 28 8b 44 24 2c <80> 38 00 0f 84 f2 03 00 00 8b 44 24 2c 0f b6 00 3c 25 74 11 3b
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vert
Apprentice
Joined: 07 May 2002
Posts: 214
Location: Delft, The Netherlands
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Kernel & Hardware
