On Mon, 8 Sep 2003, David Brownell wrote: > > It seems that a device does not answer in the case of kernel 2.4. > > However, when operating by kernel 2.6 and two or more devices > > are connected simultaneously, it operates. > > I cannot think the error of a device. > > I'd almost agree, except that the device stops responding; > and seems to stop responding to anything except (cases I've > seen) that it'll accept more OUT packets ... maybe treating > them as data to write to the disk (one hypothesis). > > When a device stops responding, it's hard to think the > problem is anything other than with the device. (Though > I still don't see where the storage class-specific reset > gets sent by usb-storage, maybe that'd clean up better.)
The reset was sent three times. Twice in response to command aborts and once at the express request of the SCSI layer. You can see it in the logs: usb-storage: *** thread awakened. usb-storage: Command READ_10 (10 bytes) usb-storage: 28 00 00 01 ce 22 00 00 3f 00 00 00 usb-storage: Bulk command S 0x43425355 T 0x93534f Trg 0 LUN 0 L 129024 F 128 CL 12 usb-storage: command_abort() called usb-storage: Bulk command transfer result=-104 usb-storage: -- transport indicates command was aborted Here's one: usb-storage: Bulk reset requested usb_control/bulk_msg: timeout usb-storage: Bulk soft reset failed -110 usb-storage: scsi command aborted usb-storage: *** thread sleeping. usb-storage: queuecommand() called usb-storage: *** thread awakened. usb-storage: Command TEST_UNIT_READY (6 bytes) usb-storage: 00 00 00 00 00 00 00 00 3f 00 00 00 usb-storage: Bulk command S 0x43425355 T 0x935350 Trg 0 LUN 0 L 0 F 0 CL 12 usb-storage: Bulk command transfer result=0 usb-storage: Attempting to get CSW... usb-storage: command_abort() called usb-storage: -- transport indicates command was aborted Here's another: usb-storage: Bulk reset requested usb_control/bulk_msg: timeout usb-storage: Bulk soft reset failed -110 usb-storage: scsi command aborted usb-storage: *** thread sleeping. Here's the third: usb-storage: device_reset() called usb-storage: Bulk reset requested usb_control/bulk_msg: timeout usb-storage: Bulk soft reset failed -110 Those "Bulk reset requested" messages refer to the class-specific device reset command, not a clear-halt for a bulk pipe. Alan Stern ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
