On Sun, 3 Feb 2008, Fabio Venturi wrote:
> > > Hi to the list,
> > > I'm trying to use a Commodore Flash Disk MP3 player "CO - C.Muse"
> > > (I don't know the chipset)
> > > but when i plug it I get this:
> > >
> > > tail -f /var/log/messages.log
> > >
> > > [...]
> > > Feb 3 14:30:57 silverstar usb 1-4: new high speed USB device using
> > > ehci_hcd and address 12
> > > Feb 3 14:30:57 silverstar usb 1-4: config 1 interface 0 altsetting 0
> > > endpoint 0x83 has an invalid bInterval 200, changing to 11
Oddly enough, the lsusb listing didn't display this endpoint...
> > > Feb 3 14:30:58 silverstar usb 1-4: configuration #1 chosen from 1
> > > choice
> > > Feb 3 14:30:58 silverstar usb 1-4: USB disconnect, address 12
> > > // ---- END TAIL ---------------------
> > >
> > > Over and over with address N increasing each time, until unplugged.
> Hi Alan,
> first I'd like to thank you for the quick answer.
> The flash disk works well on the same PC on Windows, so I've excluded
> a problem on the USB socket. (Still I didn't try it on another Linux
> Distribution because this is the only PC I have)
> The output of usbmon is a kind of numerical dump that i don't undestand.
This part of the the usbmon output is where the problem occurs:
> c6378440 973116481 S Ci:1:075:0 s 80 06 0301 0409 00ff 255 <
> c6378440 974508918 C Ci:1:075:0 -71 64 = 40034100 63007400 69006f00
> 6e007300 20005300 65006d00 69006300 6f006e00
It's probably the result of a bug in the mp3 player's firmware. The
patch below might work around the bug, try it and see.
Alan Stern
Index: usb-2.6/drivers/usb/core/quirks.c
===================================================================
--- usb-2.6.orig/drivers/usb/core/quirks.c
+++ usb-2.6/drivers/usb/core/quirks.c
@@ -28,6 +28,9 @@
* devices is broken...
*/
static const struct usb_device_id usb_quirk_list[] = {
+ /* Action Semiconductor flash disk */
+ { USB_DEVICE(0x10d6, 0x1101), .driver_info =
USB_QUIRK_STRING_FETCH_255},
+
/* CBM - Flash disk */
{ USB_DEVICE(0x0204, 0x6025), .driver_info = USB_QUIRK_RESET_RESUME },
/* HP 5300/5370C scanner */
-
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
