Messages in this thread Patch in this message | | | From | Daniel Ritz <> | Subject | [PATCH] fix Acer TravelMate 360 interrupt routing | Date | Sat, 10 Apr 2004 22:24:29 +0200 |
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acer travelmate 360 has a broken interrupt routing. there's an interrupt storm on irq 10 w/o this patch as soon as yenta_socket is loaded. the problem has been seen on different machines (reported on l-k and on pcmcia-cs list). there's also an USB controller on the same interrupt line as the CB which also works fine after the patch. and routing via ACPI fails too.
against 2.6.5
--- 1.36/arch/i386/pci/irq.c Fri Feb 27 06:48:13 2004 +++ edited/arch/i386/pci/irq.c Wed Apr 7 22:15:11 2004 @@ -22,6 +22,7 @@ #define PIRQ_VERSION 0x0100 int broken_hp_bios_irq9; +int acer_tm360_irqrouting; static struct irq_routing_table *pirq_table; @@ -745,6 +744,13 @@ dev->irq = 11; pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 11); r->set(pirq_router_dev, dev, pirq, 11); + } + + /* same for Acer Travelmate 360, but with CB and irq 11 -> 10 */ + if (acer_tm360_irqrouting && pirq == 0x63 && dev->irq == 11) { + dev->irq = 10; + pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 10); + r->set(pirq_router_dev, dev, pirq, 10); } /* --- 1.56/arch/i386/kernel/dmi_scan.c Sun Mar 21 06:33:07 2004 +++ edited/arch/i386/kernel/dmi_scan.c Wed Apr 7 22:19:57 2004 @@ -360,6 +360,22 @@ } /* + * Work around broken Acer TravelMate 360 Notebooks which assign Cardbus to + * IRQ 11 even though it is actually wired to IRQ 10 + */ +static __init int fix_acer_tm360_irqrouting(struct dmi_blacklist *d) +{ +#ifdef CONFIG_PCI + extern int acer_tm360_irqrouting; + if (acer_tm360_irqrouting == 0) + { + acer_tm360_irqrouting = 1; + printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", d->ident); + } +#endif + return 0; +} +/* * Check for clue free BIOS implementations who use * the following QA technique * @@ -890,6 +906,13 @@ MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook Model GE"), MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736") } }, + + { fix_acer_tm360_irqrouting, "Acer TravelMate 36x Laptop", { + MATCH(DMI_SYS_VENDOR, "Acer"), + MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), + NO_MATCH, NO_MATCH + } }, + /* @@ -1028,6 +1051,12 @@ MATCH(DMI_BIOS_VERSION, "ASUS A7V ACPI BIOS Revision 1007"), NO_MATCH }}, + { disable_acpi_pci, "Acer TravelMate 36x Laptop", { + MATCH(DMI_SYS_VENDOR, "Acer"), + MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), + NO_MATCH, NO_MATCH + } }, + #endif { NULL, } - 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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