On Tue, 14 Sep 2010, Zachary Burke wrote: > So the issue is apparently the fact that the Xbox 360 issues certain > SCSI commands with cbw->Length of 10. My previous searches in this > group for "xbox 360" failed, I should have tried "xbox360". > > I found a post from Felipe Balbi back in 2008 > (http://article.gmane.org/gmane.linux.usb.general/10058) along with a > patch for g_file_storage where he checks whether the SCSI command size > is < fsg command size and then sets the command size appropriately. > After making this 2 line change, everything works. > > I am still puzzled, how would I have found this without access to the > 360? It seems I would need to run usbmon on the 360 and look for the > length of certain SCSI commands. I would like to nail down some > analysis procedures to increase my chances of dealing with similar > issues in the future. If you suspected this issue on a closed host, > how would you verify it? You can turn on verbose debugging in g_file_storage, and even tell it to dump every message to the kernel log. It may or may not be possible to do the same thing in your version of the mass_storage driver. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
