Bug 146222

Description of problem:

[ This is a CC of the upstream report available at
  http://listserv.isdn4linux.de/pipermail/isdn4linux/2005-January/001162.html

  perhaps it is caused by some RHizms which can be solved here...

  Alternatively, the ISDN infrastructure should be updated to mISDN ]

=========================

Hi,

I try to use my Fritz PCI ISDN card with Linux 2.6 but had not very much
success with this :(

The driver will be loaded without problems but when I try to dial a number,
a hangup happens immediately afte 2-3 seconds. Some observations:

* /proc/interrupts does not show any activity for the used IRQ when the
  driver is loaded; under linux 2.4 I see periodic interrupts (the IRQ
  is not shared). During the initialization phase of the driver I see 3
  IRQs under 2.6 and 5 under 2.4

* /dev/isdnctl does not show any entry; under 2.4 I see periodic status
  reports there. 'isdnlog' is stopped and 'hisaxctl 11 -1' was executed.

* on the first incoming call I see a 'hdlc spurious channel 0 IRQ'
  message which will not be shown on subsequent calls.

* outgoing calls to a mobile phone or another telephone do not seem to
  have an effect (no ringing)

* I use the same userspace configuration under kernel 2.4 and 2.6 but
  only the 2.4 one works. The ISDN specific kernelconfiguration matches
  for both kernels


Some information about the system:

* vanilla 2.6.10 kernel or Fedora Core 2.6.10-1.741_FC3 kernel
  ==>  no success

* vanilla 2.4.27 kernel  ==>  success

* AMD K6-2 500 CPU, Asus P5A board

* 'acpi=off' and 'acpi=on' and enabling/disabling of 'PNP OS' in the
  BIOS settings have been tried without any success

* CONFIG_PNP kernel-setting is enabled and turning it off does not
  change anything

* the ISDN has been tried in another PCI slot (with IRQ sharing) but it
  gives the same results as above

* the module parameters are 'type=27 protocol=2'



Yet more information, logmessages and more can be found at

             http://www-user.tu-chemnitz.de/~ensc/hw/londo



Version-Release number of selected component (if applicable):

isdn4k-utils-3.2-21
kernel-2.6.10-1.741_FC3