Re: [PATCH v10 06/59] PCI: Kill wrong quirk about M7101
From: Meelis Roos
Date: Sat Mar 12 2016 - 03:34:34 EST
> On Fri, Mar 11, 2016 at 11:52 PM, Meelis Roos <mroos@xxxxxxxx> wrote:
> >> On Thu, Mar 10, 2016 at 9:40 AM, Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote:
> >> > On Wed, Feb 24, 2016 at 06:11:57PM -0800, Yinghai Lu wrote:
> >> >> Meelis reported that qla2000 driver does not get loaded on one sparc system.
> >> >>
> >> >> schizo f00732d0: PCI host bridge to bus 0001:00
> >> >> pci_bus 0001:00: root bus resource [io 0x7fe01000000-0x7fe01ffffff] (bus address [0x0000-0xffffff])
> >> >> pci 0001:00:06.0: quirk: [io 0x7fe01000800-0x7fe0100083f] claimed by ali7101 ACPI
> >> >> pci 0001:00:06.0: quirk: [io 0x7fe01000600-0x7fe0100061f] claimed by ali7101 SMB
> >> >> pci 0001:00:07.0: can't claim BAR 0 [io 0x7fe01000000-0x7fe0100ffff]: address conflict with 0001:00:06.0 [io 0x7fe01000600-0x7fe0100061f]
> >> >>
> >> >> So the quirk for M7101 claim the io range early.
> > But why did it work until 4.2 and only with 4.3 the allocations broke?
> My understanding is we really install the root bus resource and try to
> do the sanitary checking
> for device resource.
> Or did you find exact commit between 4.2 and 4.3 cause the problem ?
No, I have not bisected that.
Meelis Roos (mroos@xxxxxxxx)