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    Subject[patch] VAIO irq assignment fix
    Hi

    I have gotten a Sony VAIO R505TL laptop which has a Richo RL5C574
    Cardbus controller however the broken bios doesn't assign an irq to the
    controller even though it is attached.

    This patch solves the problem and makes cardbus insert/eject a lot more
    stable for me.

    Cheers,
    Jes
    --- ../linux-2.4.18-pre2/arch/i386/kernel/dmi_scan.c Fri Dec 21 12:41:53 2001
    +++ arch/i386/kernel/dmi_scan.c Wed Jan 16 18:36:05 2002
    @@ -5,6 +5,7 @@
    #include <linux/init.h>
    #include <linux/apm_bios.h>
    #include <linux/slab.h>
    +#include <linux/pci.h>
    #include <asm/io.h>
    #include <linux/pm.h>
    #include <asm/keyboard.h>
    @@ -416,6 +417,26 @@


    /*
    + * Work around broken Sony VAIO Notebooks which do not assign irqs
    + * to their Richo RL5C475 Cardbus controller, IRQ is 9.
    + */
    +static __init int fix_broken_sony_bios_irq(struct dmi_blacklist *d)
    +{
    + struct pci_dev *pdev = NULL;
    +
    + pdev = pci_find_device(PCI_VENDOR_ID_RICOH,
    + PCI_DEVICE_ID_RICOH_RL5C475, pdev);
    + if (pdev) {
    + pdev->irq = 9;
    + pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, 9);
    + printk(KERN_INFO "%s detected - fixing missing/"
    + "broken IRQ routing\n", d->ident);
    + }
    + return 0;
    +}
    +
    +
    +/*
    * Simple "print if true" callback
    */

    @@ -614,7 +635,13 @@
    NO_MATCH, NO_MATCH
    } },

    -
    + { fix_broken_sony_bios_irq, "Sony VAIO R505TL Series Laptop", {
    + MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
    + MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
    + MATCH(DMI_BIOS_VERSION, "R0202U1"),
    + NO_MATCH
    + } },
    +
    /*
    * Generic per vendor APM settings
    */
    -
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