lkml.org 
[lkml]   [2006]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [v4l-dvb-maintainer] 2.6.16-rc5: known regressions
Hi, Brian

Mauro Carvalho Chehab wrote:
> Wow! Lots of people being c/c here! Since all pertinent guys are at
> lkml, I've just removed all those spam, keeping copied just the lists,
> and Adrian, who warned me about it.
>
> Em Qua, 2006-03-08 às 14:13 +0300, Brian Marete escreveu:
>
>>What you say is quite correct.
>>
>>However, my card is not known by the driver, and `card=3' has been working
>>for me all the while, with no problems at all. In any case, removing
>>`disable_ir=1' from the insmod options hides the problem for me. By the way,
>>that option was there since in an an earlier -rc, loading the driver without
>>it would cause an oops.
>
> The option disable_ir is, in fact, a workaround. If this is not needed
> anymore, this is a progress ;) Anyway, having an OOPS is really bad. We
> should go further to avoid oops on it.
>
> IR on some saa7134 cards are really a trouble. Sometimes, it just
> generates lots of weird events, since you are gathering a generic io
> port (GPIO) from hardware to generate keypressing. Using the wrong port
> may generate troubles at the system, by sending wrong events to input.
> With a wrong card, if somebody fixed the IR, it may broke for your
> board.

<snip>

I tried to reproduce your problem but i didn't succeed yet. I also think
that the IR support could be the problem. Card 3 defines a GPIO based
remote support. As Mauro mentioned above, this is - at least - dangerous
if you force this card type but you don't have a remote control or just a
different one. This type of remote can use a GPIO port of the SAA713x to
generate interrupts. If this pin is floating on your card, the driver can
just be flooded with IRQs. We should have a look whether we can prevent this
in the IRQ handler.

Best regards
Hartmut
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-03-08 23:55    [W:1.562 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site