Messages in this thread | | | Date | Sun, 21 May 2006 16:56:14 +0200 | From | Manfred Spraul <> | Subject | Re: [git patches] net driver updates |
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Andreas Kleen wrote:
>>No idea, but unlikely. The fix removes a duplicate request_irq call. >>Is >>it possible that the both instances run concurrently? >> >> > >The system has two Forcedeth ports, but only one has a cable connected. >I don't think there is any parallelism. Just one connection with a lot >of data. It didn't happen with 2.6.16. > > > You misunderstood me: Due to a broken patch, the driver did request_irq(irqnum, handler,...) twice. Thus the irq handler was registered twice. The rx synchronization assumes that the irq handler doesn't run concurrently. I'm not sure what happens if the irq handler is registered twice: is it possible that it runs twice at the same time, i.e. is the synchronization in the irq subsystem irq number or registration call based?
>If you don't have any other good ideas I will try to track it down. > > > I don't have any good ideas, please try to figure out what's wrong. Is there a debug switch for the network layer that forces the network layer to verify the CHECKSUM_UNNECESSARY blocks?
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