lkml.org 
[lkml]   [2005]   [Jun]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: [linux-usb-devel] 2.6.12-rc5 : repeatable modprobe usb-storage hang
    Date
    On Friday 03 June 2005 10:41 am, Parag Warudkar wrote:
    >
    > Also interesting is this line -
    > [ 40.586298] ohci_hcd 0000:00:02.0: Unlink after no-IRQ? Controller is
    > probably using the wrong IRQ.

    So did you investigate these IRQ setup problem, or just ignore
    that pointed diagnostic?

    Controllers are not expected to behave if their drivers aren't given
    the correct IRQ. In particular, when software needs to wait until
    the hardware reports it's finished with something, and the hardware
    never reports that (== never issues the IRQ) then things may hang.


    Also this earlier line already identified a potential root cause:

    > [   38.927690] ACPI: PCI Interrupt 0000:00:02.0[P]: no GSI - using IRQ 11

    This could be a problem in either the tables BIOS provided, or in the
    way ACPI is interpreting them, or something else ... I'm not an ACPI guru.

    You should be experimenting with ways to get the right IRQ assigned to this
    controller; such problems are common enough that there are probably half a
    dozen boot options affecting what happens. Or maybe look at BIOS options that
    affect that controller; you might need to update your board's BIOS firmware.

    - Dave


    -
    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/

    \
     
     \ /
      Last update: 2005-06-04 21:15    [W:0.021 / U:0.080 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site