Messages in this thread Patch in this message |  | | | Subject | Re: [PATCH] PCI fixes for 2.6.9 | | Date | Tue, 19 Oct 2004 15:42:15 -0700 | | From | Greg KH <> |
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ChangeSet 1.1997.37.25, 2004/10/06 12:25:07-07:00, akpm@osdl.org
[PATCH] add-pci_fixup_enable-pass.patch
From: Bjorn Helgaas <bjorn.helgaas@hp.com>
Nick Piggin's USB driver stopped working when I removed the unconditional PCI ACPI IRQ routing stuff. He has verified that the attached patch fixes it. I sort of hate to add another pass of PCI fixups, so I'm open to alternate solutions if anybody suggests one.
Add a "pci_fixup_enable" pass of PCI fixups. These are run at the end of pci_enable_device() to fix up things like IRQs that are not set up until then. Some VIA boards require a fixup after the IRQ is set up. Found by Nick Piggin, initial patch by Bjorn Helgaas, reworked to fit into current -mm by Nick.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
drivers/pci/pci.c | 7 ++++++- drivers/pci/quirks.c | 15 ++++++++++++--- include/asm-generic/vmlinux.lds.h | 3 +++ include/linux/pci.h | 7 +++++++ 4 files changed, 28 insertions(+), 4 deletions(-)
diff -Nru a/drivers/pci/pci.c b/drivers/pci/pci.c --- a/drivers/pci/pci.c 2004-10-19 15:25:30 -07:00 +++ b/drivers/pci/pci.c 2004-10-19 15:25:30 -07:00 @@ -382,8 +382,13 @@ int pci_enable_device(struct pci_dev *dev) { + int err; + dev->is_enabled = 1; - return pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1); + if ((err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1))) + return err; + pci_fixup_device(pci_fixup_enable, dev); + return 0; } /** diff -Nru a/drivers/pci/quirks.c b/drivers/pci/quirks.c --- a/drivers/pci/quirks.c 2004-10-19 15:25:30 -07:00 +++ b/drivers/pci/quirks.c 2004-10-19 15:25:30 -07:00 @@ -491,9 +491,9 @@ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq); } } -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, quirk_via_irqpic ); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, quirk_via_irqpic ); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_6, quirk_via_irqpic ); +DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, quirk_via_irqpic ); +DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, quirk_via_irqpic ); +DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_6, quirk_via_irqpic ); /* @@ -1003,6 +1003,9 @@ extern struct pci_fixup __end_pci_fixups_header[]; extern struct pci_fixup __start_pci_fixups_final[]; extern struct pci_fixup __end_pci_fixups_final[]; +extern struct pci_fixup __start_pci_fixups_enable[]; +extern struct pci_fixup __end_pci_fixups_enable[]; + void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) { @@ -1018,6 +1021,12 @@ start = __start_pci_fixups_final; end = __end_pci_fixups_final; break; + + case pci_fixup_enable: + start = __start_pci_fixups_enable; + end = __end_pci_fixups_enable; + break; + default: /* stupid compiler warning, you would think with an enum... */ return; diff -Nru a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h --- a/include/asm-generic/vmlinux.lds.h 2004-10-19 15:25:30 -07:00 +++ b/include/asm-generic/vmlinux.lds.h 2004-10-19 15:25:30 -07:00 @@ -24,6 +24,9 @@ VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \ *(.pci_fixup_final) \ VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \ + VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \ + *(.pci_fixup_enable) \ + VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \ } \ \ /* Kernel symbol table: Normal symbols */ \ diff -Nru a/include/linux/pci.h b/include/linux/pci.h --- a/include/linux/pci.h 2004-10-19 15:25:30 -07:00 +++ b/include/linux/pci.h 2004-10-19 15:25:30 -07:00 @@ -1001,6 +1001,7 @@ enum pci_fixup_pass { pci_fixup_header, /* Called immediately after reading configuration header */ pci_fixup_final, /* Final phase of device fixups */ + pci_fixup_enable, /* pci_enable_device() time */ }; /* Anonymous variables would be nice... */ @@ -1013,6 +1014,12 @@ static struct pci_fixup __pci_fixup_##vendor##device##hook __attribute_used__ \ __attribute__((__section__(".pci_fixup_final"))) = { \ vendor, device, hook }; + +#define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ + static struct pci_fixup __pci_fixup_##vendor##device##hook __attribute_used__ \ + __attribute__((__section__(".pci_fixup_enable"))) = { \ + vendor, device, hook }; + void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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