Re: [PATCH] uio: uio_pdrv_genirq V3

[Magnus Damm]

On Fri, Jul 11, 2008 at 7:18 PM, Uwe Kleine-König
<Uwe.Kleine-Koenig@xxxxxxxx> wrote:
> Magnus Damm wrote:
>>   - kept irq control spinlock to serialize user space access
> I think you want to assert, that after a succeeded
>
>        echo 0 > /dev/uioX
>
> the userspace doesn't need to check for a pending irq?!  What happens if
> the irq triggers before you take the lock?

No, I'm not trying to solve anything like that. =)

The serialization code is only there to correctly handle multiple
processes/threads.

/ magnus
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