Re: IRQF_TIMER | IRQF_SHARED ?

[Martin-Ãric Racine]

12. joulukuuta 2011 22.31 Andres Salomon <dilinger@xxxxxxxxxx> kirjoitti:
> On Mon, 12 Dec 2011 16:41:25 +0100
> Jens Rottmann <JRottmann@xxxxxxxxxxxxxxxxxx> wrote:
>> one of our customers tripped over the fact that the MFGPT driver
>> won't share its IRQ with anyone else. (MFGPT defaulted to same IRQ as
>> audio, MFGPT driver loaded first, audio fails.) *No big deal!* They
>> don't actually need MFGPT and will simply disable it. It just made me
>> wonder ...
>>
>> Why would it be such a bad idea to use IRQF_TIMER | IRQF_SHARED (see
>> patch below)? mfgpt_tick() already does properly return IRQ_NONE when
>> it feels unresponsible. I tested it with either driver loaded first
>> and it seemed to work (well, at least audio worked, don't know how to
>> explicitly test cs5535-clockevt).
>
> Just loading cs5535-clockevt should start the periodic timer. ÂOn my
> XO-1, IRQ 7 starts firing immediately.

Could it be a good idea to inform udev maintainers of this?

Martin-Ãric
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