From: fantajista <fan...@gm...> - 2013-03-01 04:01:21
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Hi, all USB devices connected to USB hub doesn't become powered on. And, the following messages are shown eternally. --------- hub 1-0:1.0: unable to enumerate USB device on port 1 musb_bus_suspend 2307: trying to suspend as a_host while active usb 1-1: new full speed USB device number 58 using musb-hdrc usb 1-1: device descriptor read/64, error -71 usb 1-1: device descriptor read/64, error -71 usb 1-1: new full speed USB device number 59 using musb-hdrc usb 1-1: device descriptor read/64, error -71 usb 1-1: device descriptor read/64, error -71 usb 1-1: new full speed USB device number 60 using musb-hdrc usb 1-1: device not accepting address 60, error -71 usb 1-1: new full speed USB device number 61 using musb-hdrc usb 1-1: device not accepting address 61, error -71 ---------- It's NOT happen every booting, but also occasionally the first time of boot in the day. And after reboot, USB devices become powered on. I tried to reset USB to control GPIO, but failed due to "Device is busy". root@overo:/sys/class/gpio# echo 183 > /sys/class/gpio/export root@overo:/sys/class/gpio# dmesg | tail gpio_request: gpio-183 (sysfs) status -16 export_store: status -16 How do I reset USB and power on it ? Thanks. -- View this message in context: http://gumstix.8.n6.nabble.com/How-to-reset-USB-tp4966927.html Sent from the Gumstix mailing list archive at Nabble.com. |