Messages in this thread Patch in this message | | | Date | Mon, 07 Feb 2005 21:42:02 -0800 | From | "Mark F. Haigh" <> | Subject | Re: [PATCH 2.6.11-rc3-bk4] arch/i386/kernel/pci/irq.c: Wrong message output |
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Greg KH wrote: > On Mon, Feb 07, 2005 at 09:06:18PM -0800, Mark F. Haigh wrote: <snip> > > --- arch/i386/pci/irq.c.orig 2005-02-07 20:40:58.140856536 -0800 > > +++ arch/i386/pci/irq.c 2005-02-07 20:46:06.713946296 -0800 > > Can you resend this so it can be applied with -p1 to patch, and a > Signed-off-by: line? >
Ack, my fault.
Mark F. Haigh Mark.Haigh@spirentcom.com
Signed-off-by: Mark F. Haigh <Mark.Haigh@spirentcom.com>
--- linux-2.6.11-rc3-bk4/arch/i386/pci/irq.c.orig 2005-02-07 20:40:58.000000000 -0800 +++ linux-2.6.11-rc3-bk4/arch/i386/pci/irq.c 2005-02-07 20:46:06.000000000 -0800 @@ -1031,56 +1031,55 @@ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); if (pin && !pcibios_lookup_irq(dev, 1) && !dev->irq) { - char *msg; - msg = ""; + char *msg = ""; + + pin--; /* interrupt pins are numbered starting from 1 */ + if (io_apic_assign_pci_irqs) { int irq; - if (pin) { - pin--; /* interrupt pins are numbered starting from 1 */ - irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin); - /* - * Busses behind bridges are typically not listed in the MP-table. - * In this case we have to look up the IRQ based on the parent bus, - * parent slot, and pin number. The SMP code detects such bridged - * busses itself so we should get into this branch reliably. - */ - temp_dev = dev; - while (irq < 0 && dev->bus->parent) { /* go back to the bridge */ - struct pci_dev * bridge = dev->bus->self; - - pin = (pin + PCI_SLOT(dev->devfn)) % 4; - irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number, - PCI_SLOT(bridge->devfn), pin); - if (irq >= 0) - printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n", - pci_name(bridge), 'A' + pin, irq); - dev = bridge; - } - dev = temp_dev; - if (irq >= 0) { + irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin); + /* + * Busses behind bridges are typically not listed in the MP-table. + * In this case we have to look up the IRQ based on the parent bus, + * parent slot, and pin number. The SMP code detects such bridged + * busses itself so we should get into this branch reliably. + */ + temp_dev = dev; + while (irq < 0 && dev->bus->parent) { /* go back to the bridge */ + struct pci_dev * bridge = dev->bus->self; + + pin = (pin + PCI_SLOT(dev->devfn)) % 4; + irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number, + PCI_SLOT(bridge->devfn), pin); + if (irq >= 0) + printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n", + pci_name(bridge), 'A' + pin, irq); + dev = bridge; + } + dev = temp_dev; + if (irq >= 0) { #ifdef CONFIG_PCI_MSI - if (!platform_legacy_irq(irq)) - irq = IO_APIC_VECTOR(irq); + if (!platform_legacy_irq(irq)) + irq = IO_APIC_VECTOR(irq); #endif - printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n", - pci_name(dev), 'A' + pin, irq); - dev->irq = irq; - return 0; - } else - msg = " Probably buggy MP table."; - } + printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n", + pci_name(dev), 'A' + pin, irq); + dev->irq = irq; + return 0; + } else + msg = " Probably buggy MP table."; } else if (pci_probe & PCI_BIOS_IRQ_SCAN) msg = ""; else msg = " Please try using pci=biosirq."; - + /* With IDE legacy devices the IRQ lookup failure is not a problem.. */ if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE && !(dev->class & 0x5)) return 0; - + printk(KERN_WARNING "PCI: No IRQ known for interrupt pin %c of device %s.%s\n", - 'A' + pin - 1, pci_name(dev), msg); + 'A' + pin, pci_name(dev), msg); } /* VIA bridges use interrupt line for apic/pci steering across the V-Link */ | |