Hi , We are trying to open and close ttyUSB0 port and using 'chat' command to communicate in while loop using shell script.but after 30-40 times '#' reply is not coming for 'ls' command. shell script:: while ( stty -F /dev/ttyUSB0 115200 -echo exec > /dev/ttyUSB0 exec < /dev/ttyUSB0 chat '' ls '#' ) result =$? platform : custom serial driver : pl2303 host controller :xhci But when we remove xhci-hcd driver and insert again it start working for 30-40 times. Workround: #modprobe xhci-hcd -r #modprobe xhci-hcd so this bug is in serial pl2303 driver or xhci driver? how to print xhci (low level) usb buffer packet which received for usb port? Thanks shishir tiwari -- 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
