Re: [linux-usb-devel] [PATCH] Ohci-hcd: fix endless loop

[David Brownell]

On Friday 26 November 2004 08:54, Colin Leroy wrote:
> On 26 Nov 2004 at 08h11, David Brownell wrote:
> 
> Hi, 
> 
> > The infinite loop means that something trashed the stack, yes?
> > 
> > The "limit-- < -1000" test below should never be able to succeed
> > unless the previous "limit-- == 0" test got trashed by having
> > something obliterate the stack. 
> 
> Sure? the (limit -- == 0) gotoes higher to test again.
> from what I understand the loop goes back to rescan 1000 times, then once 
> to sanitize, then to back to rescan again infinetely...
> I may be wrong but I don't think there's a stack corruption there.

The "limit" isn't tested a 1001st time, since the ED state
changed.

For that matter, any time that the IRQ lossage appears,
there's always been something that damaged the IRQ setup.

- Dave

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