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Date: Mon, 29 Sep 2014 12:06:10 -0700 From: Yinghai Lu <yinghai@...nel.org> To: Liviu Dudau <Liviu.Dudau@....com> Cc: Bjorn Helgaas <bhelgaas@...gle.com>, Arnd Bergmann <arnd@...db.de>, Rob Herring <robh+dt@...nel.org>, Jason Gunthorpe <jgunthorpe@...idianresearch.com>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <Will.Deacon@....com>, Russell King <linux@....linux.org.uk>, linux-pci <linux-pci@...r.kernel.org>, Linus Walleij <linus.walleij@...aro.org>, Tanmay Inamdar <tinamdar@....com>, Grant Likely <grant.likely@...retlab.ca>, Sinan Kaya <okaya@...eaurora.org>, Jingoo Han <jg1.han@...sung.com>, Kukjin Kim <kgene.kim@...sung.com>, Suravee Suthikulanit <suravee.suthikulpanit@....com>, linux-arch <linux-arch@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, Device Tree ML <devicetree@...r.kernel.org>, LAKML <linux-arm-kernel@...ts.infradead.org>, Jiang Liu <jiang.liu@...ux.intel.com> Subject: Re: [PATCH v13 10/12] PCI: Assign unassigned bus resources in pci_scan_root_bus() On Mon, Sep 29, 2014 at 11:25 AM, Yinghai Lu <yinghai@...nel.org> wrote: > On Mon, Sep 29, 2014 at 7:29 AM, Liviu Dudau <Liviu.Dudau@....com> wrote: >> If the firmware has not assigned all the bus resources and we are not just >> probing the PCI buses, it makes sense to assign the unassigned resources >> in pci_scan_root_bus(). >> >> Signed-off-by: Liviu Dudau <Liviu.Dudau@....com> >> Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com> >> CC: Arnd Bergmann <arnd@...db.de> >> CC: Jason Gunthorpe <jgunthorpe@...idianresearch.com> >> CC: Rob Herring <robh+dt@...nel.org> >> --- >> drivers/pci/probe.c | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c >> index 636d1c9..d2ebd49 100644 >> --- a/drivers/pci/probe.c >> +++ b/drivers/pci/probe.c >> @@ -1951,6 +1951,9 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, >> if (!found) >> pci_bus_update_busn_res_end(b, max); >> >> + if (!pci_has_flag(PCI_PROBE_ONLY)) >> + pci_assign_unassigned_bus_resources(b); >> + >> pci_bus_add_devices(b); >> return b; >> } > > No, you can not do it that early. > > On x86, we need to call > pcibios_resource_survey_bus at first. on x86: pcibios_init pcibios_resource_survey() pcibios_assign_resources() via fs_initcall -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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