On Mon, Apr 18, 2016 at 09:43:36AM -0500, Bjorn Helgaas wrote: > That might work, but the problem seems to be that we aren't enabling > IRQs correctly, so I'd rather have a fix that explicitly addresses > IRQs than one that relies on some non-obvious connection between > enabling BARs and IRQs. Yeah, either we or the BIOS does something wrong. The bugzilla entry states that it works with pci=routeirq. The dmesg from kernel 4.3 shows that per default ACPI routing is used for IRQs. The difference this makes in the code is the pcibios_enable_irq function pointer. For ACPI it points to acpi_pci_irq_enable and in the pci=routeirq case to pirq_enable_irq. So the problem appears when acpi_pci_irq_enable is used with device resources disabled. This might very well also be a bios issue that we have to work around, no? Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
