cm4000 device creation

cm4000 device creation

[Joachim Breitner]

Hi list,

since the change from pcmcia-cs to pcmciautils (I think at least), the
device /dev/cmm0 for my smartcard reader (Cardman 4000) is not created
anymore. I don't know enough about the internals of udev et. al to
pinpoint the problem, so I provide you with a lot of logs :-)

Without the cm4000_cs modules loaded (debian unstable 2.6.15 kernel), I
run pccardctl insert. 

Here is the udevmonitor output:
UEVENT[1138536089.027066] add@/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0.0
UDEV  [1138536089.072472] add@/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0.0
UEVENT[1138536089.102026] add@/module/cm4000_cs
UEVENT[1138536089.102627] add@/bus/pcmcia/drivers/cm4000_cs
UDEV  [1138536089.152476] add@/module/cm4000_cs
UDEV  [1138536089.154665] add@/bus/pcmcia/drivers/cm4000_cs

And there the syslog output, with udevcontrol log_priorityÞbug:
Jan 29 13:01:29 otto kernel: pccard: PCMCIA card inserted into slot 0
Jan 29 13:01:29 otto kernel: pcmcia: registering new device pcmcia0.0
Jan 29 13:01:29 otto udevd[7160]: udev_event_run: seq 1818 forked, pid [7694], 'add' 'pcmcia', 0 seconds old
Jan 29 13:01:29 otto udevd-event[7694]: wait_for_sysfs: file '/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0.0/bus' appeared after 0 loops
Jan 29 13:01:29 otto udevd-event[7694]: run_program: '/lib/udev/pcmcia-check-broken-cis'
Jan 29 13:01:29 otto udevd-event[7694]: run_program: '/lib/udev/pcmcia-check-broken-cis' returned with status 0
Jan 29 13:01:29 otto udevd-event[7694]: run_program: '/bin/sh -c 'echo 1 > /sys//devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0.0/allow_func_id_match''
Jan 29 13:01:29 otto udevd-event[7694]: run_program: '/bin/sh' returned with status 0
Jan 29 13:01:29 otto udevd-event[7694]: pass_env_to_socket: passed 299 bytes to socket '/org/kernel/udev/monitor',
Jan 29 13:01:29 otto udevd-event[7694]: run_program: '/sbin/modprobe pcmcia:m0223c0002f00fn00pfn00pa2FB368CApbA2BD8C39pc00000000pd00000000'
Jan 29 13:01:29 otto udevd[7160]: udev_event_run: seq 1819 forked, pid [7701], 'add' 'module', 0 seconds old
Jan 29 13:01:29 otto kernel: cm4000_cs.c v2.4.0gm5 - All bugs added by Harald Welte
Jan 29 13:01:29 otto udevd[7160]: udev_event_run: seq 1820 forked, pid [7702], 'add' 'drivers', 0 seconds old
Jan 29 13:01:29 otto udevd-event[7694]: run_program: '/sbin/modprobe' returned with status 0
Jan 29 13:01:29 otto udevd-event[7694]: run_program: 'udev_run_hotplugd pcmcia'
Jan 29 13:01:29 otto udevd-event[7694]: run_program: '/lib/udev/udev_run_hotplugd' returned with status 0
Jan 29 13:01:29 otto udevd-event[7694]: run_program: 'udev_run_devd pcmcia'
Jan 29 13:01:29 otto udevd-event[7694]: run_program: '/lib/udev/udev_run_devd' returned with status 0
Jan 29 13:01:29 otto udevd-event[7694]: udev_event_run: seq 1818 finished
Jan 29 13:01:29 otto udevd[7160]: udev_done: seq 1818, pid [7694] exit with 0, 0 seconds old
Jan 29 13:01:29 otto udevd-event[7701]: pass_env_to_socket: passed 113 bytes to socket '/org/kernel/udev/monitor',
Jan 29 13:01:29 otto udevd-event[7701]: udev_event_run: seq 1819 finished
Jan 29 13:01:29 otto udevd[7160]: udev_done: seq 1819, pid [7701] exit with 0, 0 seconds old
Jan 29 13:01:29 otto udevd-event[7702]: pass_env_to_socket: passed 138 bytes to socket '/org/kernel/udev/monitor',
Jan 29 13:01:29 otto udevd-event[7702]: udev_event_run: seq 1820 finished
Jan 29 13:01:29 otto udevd[7160]: udev_done: seq 1820, pid [7702] exit with 0, 0 seconds old


Any ideas, or any more information you need?

Please CC: me on replies, I'm not subscribed to the list.

Thanks,
Joachim
-- 
Joachim "nomeata" Breitner
  mail: mail@joachim-breitner.de | ICQ# 74513189 | GPG-Key: 4743206C
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Re: cm4000 device creation

[Andrey Borzenkov]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Sunday 29 January 2006 15:02, Joachim Breitner wrote:
> Hi list,
>
> since the change from pcmcia-cs to pcmciautils (I think at least), the
> device /dev/cmm0 for my smartcard reader (Cardman 4000) is not created
> anymore. I don't know enough about the internals of udev et. al to
> pinpoint the problem, so I provide you with a lot of logs :-)
>
> Without the cm4000_cs modules loaded (debian unstable 2.6.15 kernel), I
> run pccardctl insert.
>

have you updated kernel at the same time? It appears cm4000_cs does not use 
any class function and in 2.6.15 it won't appear in sysfs without them. It 
has to be fixed in kernel.


- -andrey
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Re: cm4000 device creation

[Joachim Breitner]

Hi,

Am Sonntag, den 29.01.2006, 15:58 +0300 schrieb Andrey Borzenkov:
> have you updated kernel at the same time?
Actually, I have, from 2.4.14 to 1.4.15

>  It appears cm4000_cs does not use 
> any class function and in 2.6.15 it won't appear in sysfs without them. It 
> has to be fixed in kernel.
Thanks for the hint. What would you recommend as an intermediate
solution. A udev rule for the card reader with "RUN
mknod ... /dev/cmm0"?

Thanks,
Joachim

-- 
Joachim "nomeata" Breitner
  mail: mail@joachim-breitner.de | ICQ# 74513189 | GPG-Key: 4743206C
  JID: joachimbreitner@amessage.de | http://www.joachim-breitner.de/
  Debian Developer: nomeata@debian.org
Please avoid sending me Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html



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Re: cm4000 device creation

[Andrey Borzenkov]

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On Sunday 29 January 2006 16:11, Joachim Breitner wrote:
> Hi,
>
> Am Sonntag, den 29.01.2006, 15:58 +0300 schrieb Andrey Borzenkov:
> > have you updated kernel at the same time?
>
> Actually, I have, from 2.4.14 to 1.4.15
>
> >  It appears cm4000_cs does not use
> > any class function and in 2.6.15 it won't appear in sysfs without them.
> > It has to be fixed in kernel.
>
> Thanks for the hint. What would you recommend as an intermediate
> solution. A udev rule for the card reader with "RUN
> mknod ... /dev/cmm0"?
>

well, you have to know major allocated by kernel and it is hard without node 
appearing in sysfs (cm4000_cs does not request any specific major).
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Re: cm4000 device creation

[Joachim Breitner]

Hi,

Am Sonntag, den 29.01.2006, 16:21 +0300 schrieb Andrey Borzenkov:
> > Thanks for the hint. What would you recommend as an intermediate
> > solution. A udev rule for the card reader with "RUN
> > mknod ... /dev/cmm0"?

> well, you have to know major allocated by kernel and it is hard without node 
> appearing in sysfs (cm4000_cs does not request any specific major).

Thanks, I'll contact the drivers original author that his driver is
currently unusable.

Greetings,
Joachim
-- 
Joachim Breitner
  e-Mail: mail@joachim-breitner.de
  Homepage: http://www.joachim-breitner.de
  ICQ#: 74513189


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Re: cm4000 device creation

[Andrey Borzenkov]

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On Sunday 29 January 2006 16:33, Joachim Breitner wrote:
> Hi,
>
> Am Sonntag, den 29.01.2006, 16:21 +0300 schrieb Andrey Borzenkov:
> > > Thanks for the hint. What would you recommend as an intermediate
> > > solution. A udev rule for the card reader with "RUN
> > > mknod ... /dev/cmm0"?
> >
> > well, you have to know major allocated by kernel and it is hard without
> > node appearing in sysfs (cm4000_cs does not request any specific major).
>

actually it is hard to get minor. For major you can use /proc/devices:

major=$(awk '$2 = "cmm" {print $1}' /proc/devices)
mknod /dev/cmm0 c $major 0

you do not even need udev rule for that, it can be run as postinstall from 
modprobe.

- -andrey
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