On 11/11/13 13:33, Marek Vasut wrote:
Dear Paul Burton,On 10/11/13 20:09, Marek Vasut wrote:Dear Paul Burton,Without setting up the PIRQ[A:D] interrupt routes, PCI interrupts will be left disabled. Linux does not set up this routing but relies upon it having been set up by the bootloader, reading back the IRQ lines which the PIRQ[A:D] signals have been routed to.Did you also submit a fix to Linux guys? Best regards, Marek VasutNo, I haven't. Although Linux is reliant upon these values having been programmed it's quite clear from reading its code that that depence is intentional. It explicitely reads the route setup by the bootloader rather than clobbering it, and to me that does make sense in this case.Can this setup not be passed via a well-designed DT binding then?
I'm sure the information could be passed via DT but the Malta board currently doesn't use DT at all either in Linux or U-boot, and I don't have the time right now to convert them both to DT.
However the pcnet32 ethernet driver seems to be reliant upon the interrupt and doesn't handle the case of a PCI device with no assigned interrupt, so I'll send a patch to fail its probe in that case shortly.Thanks! Best regards, Marek Vasut
Thanks,
Paul
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