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SubjectRe: [BUG] 2.6.32 - Sddr-09 SM reader resets endlessly
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On Saturday 05 December 2009 16:34:26 Alan Stern wrote:
> On Sat, 5 Dec 2009, Andries E. Brouwer wrote:
>
> > > Andries, do you have any idea what's going on? Evidently this device
> > > doesn't accept the protocol used by the sddr09 driver.
> >
> > Hi Alan,
> >
> > Sorry, no - I have no memory and worked on these USB drivers
> > years ago. Forgot all details. Also my last sddr09 device broke
> > some time ago.
> >
> > Looking at my old files I do not see the Vendor Id 0781, so maybe
> > this is a device I never encountered.
> > These old files also discuss some trickery with multi-lun devices
> > where the driver needed depends on the lun. This is not a reader
> > of multiple types of card?
> >
> > Many of my SM readers worked with either sddr09 or sddr55.
> > Does the unusual devices section today say that such a device
> > needs sddr09?
> >
> > Found a 2.6.31 source tree. Yes,
> >
> > UNUSUAL_DEV( 0x0781, 0x0200, 0x0000, 0x9999,
> > "Sandisk",
> > "ImageMate SDDR-09",
> > US_SC_SCSI, US_PR_EUSB_SDDR09, usb_stor_sddr09_init,
> > 0),
> >
> > Is it known who added this? Is 0208 in the interval of known devices
> > for which sddr09 works?
>
> The entry was added before 2.5.0 (more than 7 years ago), and I can't
> tell who added it. And the entry doesn't say anything about DPCM
> (multiple-LUN trickery).
>
> Ed, it looks like you're out of luck. Unless you can figure out the
> vendor-specific protocol used by that device, and modify the sddr09
> driver to support it, you won't be able to use the device under Linux.
>
> Or am I completely off base? Did it used to work with an earlier
> kernel? If it did, can you get a usbmon trace of it?

This is a regression. The device works fine in 2.6.31 something
in .32 breaks it.

Ed


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