[Xen-devel] HVR-4000 DVB can't scan or tune (properly) with Xen

["jonathanjstevens@xxxxxxxxx" <jonathanjstevens@xxxxxxxxx>]

I've come across and issue and I think it may be Xen related. Hoping
you can help.

I'm trying to use a couple of HVR-4000 with my Xen server.

I'm running Fedora 16:

Linux mythtvtuner.home 3.1.0-7.fc16.x86_64 #1 SMP Tue Nov 1 21:10:48
UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

and the current packaged Xen is:

(XEN) Xen version 4.1.2 (mockbuild@xxxxxxxxxxxxxxxxxxxxxx) (gcc
version 4.6.1 20111003 (Red Hat 4.6.1-10) (GCC) ) Fri Oct 21 21:56:01
UTC 2011

When I boot without Xen the DVB PCI cards can tune and scan perfectly.
I also have a USB DVB unit, which can tune and scan regardless of
whether Xen is running. However when I try to scan and tune with the
PCI DVB cards it fails.

>From what I can tell the symptoms are exactly the same as in:

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1786

I get the same "filter timeout" messages, and I also see similar
messages in dmesg

[   26.572693] cx88[1]/1: IRQ loop detected, disabling interrupts
[   26.574810] cx88[1]: irq aud [0x1001] dn_risci1* dn_sync*

I'm running a higher kernel than in the bug resolution though.

Any help appreciated!

Regards,
Jon

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