On Fri, Mar 29, 2013 at 6:18 PM, Yinghai Lu <[email protected]> wrote: > On Fri, Mar 29, 2013 at 3:22 PM, Bjorn Helgaas <[email protected]> wrote: >> [+cc Rafael, just FYI since it involves PNP resources] >> >> On Wed, Mar 27, 2013 at 10:28 PM, Yinghai Lu <[email protected]> wrote: >>> Mathhew reported kernels fail the pci_eisa probe and are later successful >>> with the virtual_eisa_root_init force probe without slot0. >>> >>> The reason for that is: pnp probing is early than pci_eisa_init get called >>> as pci_eisa_init is called via pci_driver. >>> >>> pnp 00:0f has 0xc80 - 0xc84 reserved. >>> [ 9.700409] pnp 00:0f: [io 0x0c80-0x0c84] >>> >>> so eisa_probe will fail from pci_eisa_init >>> ==>eisa_root_register >>> ==>eisa_probe path. >>> as force_probe is not set in pci_eisa_root, it will bail early when >>> slot0 is not probed and initialized. >>> >>> Try to use subsys_initcall_sync instead, and will keep following sequence: >>> pci_subsys_init >>> pci_eisa_init_early >>> pnpacpi_init/isapnp_init >> >> Is this a regression? This must have worked at one time, but it seems >> like we've had pnpacpi_init/isapnp_init/pnpbios_init before PCI >> drivers for quite a while. > > Yes.
Do you know when the regression occurred? If you do, I'll add that info to the "stable" tag. Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
