[linux-dvb] Re: Kernel crash in saa7146_fops.c:13

[Anders Hanson <anders.hanson@speedo.nu>]

It crashes when I'm changing channels in MythTV or sometimes when  I 
start watching live tv in MythTV
It sometimes crashes when using xawtv  and changing channels.

MythTV is configure to use the V4L interface only and currently I'm only 
using it for watching analog channels.

I'va also have trouble configuring MythTV to work with both the digital 
and analog part of the card.
It seems that I can't use both the V4L linterface and DVB interface at 
the same time, and if I try
to only use the V4L interface I'm unable to change DVB channels :(

/Anders

Michael Hunold wrote:

> Hello Anders,
>
> On 01.01.2004 22:06, Anders Hanson schrieb:
>
> > I'm trying to set up a MythTV box with a Fijutsu Siemens DVB-C card
> > including the analog module.
>
> Ok.
>
> > The problem is that the system krashes quite often in saa7146_fops.c
> > at row 13.
> >
> > I'm using the latest dvb-kernel cvs tree and have tried both
> > with kernel 2.4.23 and 2.6.0
>
> What are doing exactly when the crash happens?
>
> > Row 12-13 in saa7146_fops.c is:
> >
> > if(in_interrupt())
> >    BUG();
> >
> > Is this a known issue with the DVB-C with analog module combo and
> > is there a fix?
>
> I have changed the capture code a few weeks ago and touched that code, 
> too.
>
> The function saa7146_dma_free() should never be called from interrupt 
> context, but apparently it is. I'll have a look at the problem.
>
> > /Anders
>
> CU
> Michael.

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