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    DateWed, 06 Dec 2006 09:15:03 +0900
    FromTejun Heo <>
    SubjectRe: [PATCH] ide-cd: Handle strange interrupt on the Intel ESB2
    Alan wrote:
    > On Wed, 6 Dec 2006 00:23:03 +0100
    > "Bartlomiej Zolnierkiewicz" <bzolnier@gmail.com> wrote:
    > 
    >> Looks good but aren't this trying to fix the same ICH
    >> issue that is fixed in libata by ap->ops->irq_clear(ap)?
    >>
    >> [ please see Tejun's mail: http://lkml.org/lkml/2006/11/15/94 ]
    >>
    >> If so shouldn't we apply this fix for all ICH5/6/7/8 chipsets?
    > 
    > Possibly. Thats one reason I made it a quirk bit. I'd certainly expect it
    > to be a group of related chipsets.
    > 
    >> Also shouldn't the fix be in IRQ handler?  Currently the fix is limited
    >> to ide-cd driver which seems to be the wrong place as the problem
    >> is supposed to happen also when using other IDE device drivers
    >> or/and other ATA/ATAPI devices?
    > 
    > The problem has only be observed with CD devices doing PIO ATAPI
    > commands. I am not aware of an Intel errata document that characterises
    > this errata so anything else so cannot guess further. Perhaps Intel can
    > advise ?
    
    FWIW, on my ICH7, the IRQ storm does occur on ATA devices.
    
    -- 
    tejun
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