linux-kernel - ivtv / read() blocks for more than 2s sometimes

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Date:	Thu, 3 Jul 2008 10:45:58 -0700 (PDT)
From:	Arne Wörner <arne_woerner@...oo.com>
To:	linux-kernel@...r.kernel.org
Subject: ivtv / read() blocks for more than 2s sometimes

Hi!

I use fedora core 8 x86_64 (athlon64 X2 5000+, 2gb ram, asrock mb) and update the packages whenever yum-updatesd notifies me...

About once a month
(i reboot about daily and record about 10-15 hrs of tv shows per day
 (mostly from just one tv card at the same time))
one of my 2 hauppauge pvr 250 cards or their ivtv kernel module refuse to provide a read() call with data.
Whenever that happens my selfmade recording program closes the device issues "/usr/local/bin/ivtv-tune -t europe-west -d /dev/video0 -c E9" 4 times. Then it tries to read again from it.
That repeats 5 minutes and then i reboot automatically, so that i loose about 7 minutes each time...

Is there an easier way?
Can I reset a single pci device
(e.g. by detaching the driver of a certain pci device and re-attaching it)?

Thx.

Bye
Arne

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