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    SubjectRe: 2.6.24-rc5-mm1
    On Dec 20, 2007 12:07 AM, Alan Stern <stern@rowland.harvard.edu> wrote:
    >
    > On Wed, 19 Dec 2007, Dave Young wrote:
    >
    > > I tested on another machine with kernel 2.6.24-rc2. And the result is
    > > diffrent again.
    > > Here is the result:
    > >
    > > 1. on 2.6.24-rc2, when I plugin the player the kernel reports below messages:
    > >
    > > usb-storage: waiting for device to settle before scanning
    > > /*[lets mark the below part as part 1]*/
    > > scsi 0:0:0:0: Direct-Access Newman mp3 PQ: 0 ANSI: 0 CCS
    > > sd 0:0:0:0: [sda] 245248 512-byte hardware sectors (126 MB)
    > > sd 0:0:0:0: [sda] Write Protect is on
    > > sd 0:0:0:0: [sda] Mode Sense: 03 00 80 00
    > > sd 0:0:0:0: [sda] Assuming drive cache: write through
    > > sd 0:0:0:0: [sda] 245248 512-byte hardware sectors (126 MB)
    > > sd 0:0:0:0: [sda] Write Protect is on
    > > sd 0:0:0:0: [sda] Mode Sense: 03 00 80 00
    > > sd 0:0:0:0: [sda] Assuming drive cache: write through
    > > sda: sda1
    > > /*[lets mark the below part as part 2]*/
    > > sd 0:0:0:0: [sda] Attached SCSI removable disk
    > > usb-storage: device scan complete
    > > sd 0:0:0:0: [sda] 245248 512-byte hardware sectors (126 MB)
    > > sd 0:0:0:0: [sda] Write Protect is off
    > > sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
    > > sd 0:0:0:0: [sda] Assuming drive cache: write through
    > > sd 0:0:0:0: [sda] 245248 512-byte hardware sectors (126 MB)
    > > sd 0:0:0:0: [sda] Write Protect is off
    > > sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
    > > sd 0:0:0:0: [sda] Assuming drive cache: write through
    > > sda: sda1
    >
    > This is not normal. When you plug in a storage device you should get
    > all of the messages in your part 1 plus the first two lines in your
    > part 2, but not the rest of part 2.
    >
    > > 2. on 2.6.24-rc5 kernel reports only the part 1, after try mount the
    > > disk it reports the part 2 and mount the partition as rw
    > >
    > > 3. on 2.6.24-rc5 kernel reports only the part 1, after try mount the
    > > disk it just mount the partition as ro with nothing more messages.
    >
    > You must have a typo there. Those can't both be true for 2.6.24-rc5.
    > In fact you shouldn't see part 2 at all.
    >
    > Here's what I get when I plug in a USB mass-storage device under
    > 2.6.24-rc5:
    >
    > [ 87.903014] usb-storage: device found at 2
    > [ 87.909570] scsi 0:0:0:0: Direct-Access Memorex TD 2B 1.09 PQ: 0 ANSI: 0 CCS
    > [ 87.913144] usb-storage: device scan complete
    > [ 88.804031] sd 0:0:0:0: [sda] 243712 512-byte hardware sectors (125 MB)
    > [ 88.805507] sd 0:0:0:0: [sda] Write Protect is off
    > [ 88.805577] sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
    > [ 88.805639] sd 0:0:0:0: [sda] Assuming drive cache: write through
    > [ 88.809526] sd 0:0:0:0: [sda] 243712 512-byte hardware sectors (125 MB)
    > [ 88.810421] sd 0:0:0:0: [sda] Write Protect is off
    > [ 88.810488] sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
    > [ 88.810575] sd 0:0:0:0: [sda] Assuming drive cache: write through
    > [ 88.810641] sda: sda1
    > [ 88.812450] sd 0:0:0:0: [sda] Attached SCSI removable disk
    > [ 89.041014] sd 0:0:0:0: Attached scsi generic sg0 type 0
    >
    > Mounting the disk produces no extra output at all. I get the same
    > result under 2.6.23 and earlier operating systems. You should see
    > approximately the same thing.

    Hi, Alan

    I'm sure about my post. I'm not so famillar with usb.
    It looks weird. Seems that my device will be firstly recoganized as a
    mp3 player and then a usb storage, so the system will report part 1 &
    part 2 under previous kernels.

    Regards
    dave


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