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    SubjectRe: 2.5.45 / boottime oops (pnp bios I think)
    On Mon, Nov 04, 2002 at 01:54:59PM +1100, CaT wrote:
    > When I unselect PNP BIOS the kernel boots fine. With it I get the
    > oops below. Please note that it was typed out manually and that that was
    > all that I could get as I could not scroll up or down in any way.
    >
    > The PC is a Gateway laptop.
    >
    > If you need more info, please holler.
    >

    Instead of adding your PnP BIOS to the black list, I may know a way to
    support it completely even though it is broken.

    To prove this idea could you please do the following:

    1.) apply patch 1 (attached below) to a clean kernel (2.5.45). Compile the
    kernel with PnP BIOS support and list the last few messages that start with
    "pnp!!!:" before it panics. You probably will want to have kernel debugging
    off so it doesn't scroll the messages off the screen.

    2.) Apply patch 2 (attached below) to a clean kernel (2.5.45). Compile the
    kernel with PnP BIOS support. It should start up completely without a panic.
    This is not a complete fix however. Anyway attach a copy of the output from
    dmesg.

    If my theory is correct I will have a fix out soon.

    thanks,
    Adam


    patch 1---------------------------------------------------------------------

    diff -ur stock/drivers/pnp/pnpbios/core.c debug/drivers/pnp/pnpbios/core.c
    --- stock/drivers/pnp/pnpbios/core.c Thu Oct 31 00:41:38 2002
    +++ debug/drivers/pnp/pnpbios/core.c Mon Nov 4 15:48:56 2002
    @@ -1421,6 +1421,7 @@
    memcpy(dev->name,"Unknown Device",13);
    dev->name[14] = '\0';
    pnpid32_to_pnpid(node->eisa_id,id);
    + printk(KERN_ERR "PNP!!!: Node number: 0x%x EISA ID: %s\n", (unsigned int)thisnodenum, id);
    memcpy(dev_id->id,id,8);
    pnp_add_id(dev_id, dev);
    pos = node_current_resource_data_to_dev(node,dev);


    patch 2---------------------------------------------------------------------
    diff -ur stock/drivers/pnp/pnpbios/core.c debug/drivers/pnp/pnpbios/core.c
    --- stock/drivers/pnp/pnpbios/core.c Thu Oct 31 00:41:38 2002
    +++ debug/drivers/pnp/pnpbios/core.c Mon Nov 4 15:50:41 2002
    @@ -1405,7 +1405,7 @@
    * asking for the "current" config causes some
    * BIOSes to crash.
    */
    - if (pnp_bios_get_dev_node(&nodenum, (char )0 , node))
    + if (pnp_bios_get_dev_node(&nodenum, (char )1 , node))
    break;
    nodes_got++;
    dev = pnpbios_kmalloc(sizeof (struct pnp_dev), GFP_KERNEL);
    @@ -1421,6 +1421,7 @@
    memcpy(dev->name,"Unknown Device",13);
    dev->name[14] = '\0';
    pnpid32_to_pnpid(node->eisa_id,id);
    + printk(KERN_ERR "PNP!!!: Node number: 0x%x EISA ID: %s\n", (unsigned int)thisnodenum, id);
    memcpy(dev_id->id,id,8);
    pnp_add_id(dev_id, dev);
    pos = node_current_resource_data_to_dev(node,dev);
    -
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