On Fri, 19 Apr 2013, victor yeo wrote: > When writing to USB gadget from Linux host, the SCSI_WRITE_10 command > is sent out from the Linux host, but the USB gadget receives zero > length packet. And after a long wait of 30 seconds, the Linux host > resets the connection (-104). The usbmon trace and the UDC driver log > are attached. The UDC log starts somewhere in the middle of the test, not at the beginning. It doesn't show what the gadget was doing when the error started. > g_file_storage gadget: bulk-out, length 0: > g_file_storage gadget: bulk_out_complete --> 0, 0/31 > > I think UDC driver receives the zero length packet on bulk out endpoint. No. The host does not send any zero-length packets. The UDC driver thinks it received something on the bulk-out endpoint, but it is wrong. No packet was received. 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
