Hi I have some stange errors on a arm pcm043 with internal usb phy. The log is attached at the end of the mail. It would be nice if someone could give me a pointer whats going wrong?. It would also be nice to know where the status flags which are output by the usb debug messages are documented? As it might be a hw problem i would like to activate the testmodes of the ehci controller. The old Freescale BSP driver had a file in debugfs where enabling this stuff was easy. Is there also an easy way to enable the ehci debug facility from linux usermode? Thanks Tim The very seldom error i have seen: usb-storage: Bulk data transfer result 0x0 usb-storage: Attempting to get CSW... usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes usb-storage: Status code 0; transferred 13/13 usb-storage: -- transfer complete usb-storage: Bulk status result = 0 usb-storage: Bulk Status S 0x53425355 T 0x148af R 0 Stat 0x0 usb-storage: scsi cmd done, result=0x0 usb-storage: *** thread sleeping. hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002 mxc-ehci mxc-ehci.0: GetStatus port:1 status c00100a 6 ACK POWER sig=se0 PEC CSC hub 1-0:1.0: port 1, status 0100, change 0003, 12 Mb/s usb 1-1: USB disconnect, device number 23 usb 1-1: unregistering device usb 1-1: unregistering interface 1-1:1.0 usb-storage: storage_disconnect() called usb-storage: -- usb_stor_release_resources usb-storage: -- sending exit command to thread usb-storage: *** thread awakened. usb-storage: -- exiting usb-storage: -- dissociate_dev usb 1-1: usb_disable_device nuking all URBs mxc-ehci mxc-ehci.0: GetStatus port:1 status 001803 0 ACK POWER sig=j CSC CONNECT hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101 mxc-ehci mxc-ehci.0: port 1 high speed mxc-ehci mxc-ehci.0: GetStatus port:1 status 8001205 4 ACK POWER sig=se0 LPM PE CONNECT usb 1-1: new high-speed USB device number 24 using mxc-ehci mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 1 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 2 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 3 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 4 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 5 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 6 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 7 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 8 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 9 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 10 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 11 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 12 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 13 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 14 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 15 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 16 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 17 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 18 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 19 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 20 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 21 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 22 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 23 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 24 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 25 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 26 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 27 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 28 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 29 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 30 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 31 mxc-ehci mxc-ehci.0: devpath 1 ep0in 3strikes mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 1 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 2 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 3 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 4 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 5 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 6 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 7 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 8 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 9 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 10 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 11 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 12 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 13 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 14 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 15 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 16 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 17 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 18 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 19 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 20 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 21 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 22 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 23 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 24 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 25 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 26 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 27 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 28 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 29 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 30 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 31 mxc-ehci mxc-ehci.0: devpath 1 ep0in 3strikes mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 1 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 2 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 3 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 4 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 5 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 6 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 7 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 8 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 9 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 10 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 11 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 12 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 13 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 14 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 15 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 16 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 17 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 18 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 19 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 20 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 21 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 22 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 23 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 24 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 25 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 26 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 27 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 28 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 29 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 30 mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 31 mxc-ehci mxc-ehci.0: devpath 1 ep0in 3strikes mxc-ehci mxc-ehci.0: GetStatus port:1 status c00100a 6 ACK POWER sig=se0 PEC CSC hub 1-0:1.0: unable to enumerate USB device on port 1 hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002 -- 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