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    SubjectRe: [PATCH 1/1] scsi: retrieve cache mode using ATA_16 if normal routine fails
    On Tue, Dec 13, 2011 at 2:23 PM, James Bottomley
    <> wrote:
    > On Tue, 2011-12-13 at 09:20 +0900, Namjae Jeon wrote:
    >> > This whole patch looks like a layering violation.  Why not just update
    >> > the SAT layer to translate the MODE SENSE correctly?
    >> Would plz you explain more ? I didn't clearly understand your point yet.
    > The ATA layer does translation for SCSI commands.  Just translate the
    > mode sense correctly to use IDENTIFY word 85.  It's a smaller patch and
    > no need for any changes in SCSI.
    I have a confusion to this, can you please guide where exactly to look for this.
    Is there any existing solution to this problem? I did a lot of
    analysis and actually tried to make use of a number of USB HDD's from
    different vendors to be very sure of my observations. Our's is a
    target where-in we connect our HDD through the USB interface.
    Do you mean that putting code changes at this place would have impact
    on SATA HDD?
    Please help more on this.
    > Actually, looking at it, it seems to be correct ... why is it not
    > working for you?
    Again, if possible please share that code point, We can again check if
    that is hitting in our case.
    If need be I can provide the list of all the HDDs with their
    manufaturer ID's - on which we tested.
    Please let me know for this.
    > James
    Thanks & Regards,
    Amit Sahrawat
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