hello: I am using kernel 2.6.8.1 I am trying to use libusb to talk to my usb stick. but can't claim interface. (before I claim the interface, I can usb_set_configuration successfully!)
here is some info: ------------------------------------------------------------------------------------------------------------------------ usb_os_init: Found USB VFS at /proc/bus/usb usb_os_find_busses: Found 001 usb_os_find_busses: Skipping non bus directory devices usb_os_find_devices: Found 002 on 001 usb_os_find_devices: Found 001 on 001 Check that you have permissions to write to 001/002 and, if you don't, that you set up hotplug (http://linux-hotplug.sourceforge.net/) correctly. USB error: could not claim interface 0: Device or resource busy -------------------------------------------------------------------- and I checked the write permission of /proc/bus/usb,it seems it not the true reason. ------------------------------------------------------------------------------ [EMAIL PROTECTED] tests]# ls -al /proc/bus/usb/001 total 0 dr-xr-xr-x 2 root root 0 1 27 2005 . drwxr-xr-x 3 root root 0 1 27 2005 .. -rw-r--r-- 1 root root 43 1 27 2005 001 -rw-r--r-- 1 root root 50 1 27 2005 002 [EMAIL PROTECTED] tests]# ls -al /proc/bus/usb/001/00 001 002 [EMAIL PROTECTED] tests]# ls -al /proc/bus/usb/001/001 -rw-r--r-- 1 root root 43 1 27 2005 /proc/bus/usb/001/001 [EMAIL PROTECTED] tests]# ls -al /proc/bus/usb/001/002 -rw-r--r-- 1 root root 50 1 27 2005 /proc/bus/usb/001/002 [EMAIL PROTECTED] tests]# ------------------------------------------------------------------------------ I found that the error returned by usb_driver_claim_interface() in drivers/usb/core/usb.c where if(dev->driver) return -EBUSY; I searched internet and it seems the driver is already claimed by usb core. is that the cause? how to solve this problem? because when the usb core detected the usb stick, it will bind the mass storage driver to it.how to claim it again? Thank you very much! -------------------------------------------------------------------- Appl. Engr. , STMircoelectronics(Beijing,China) Tel.+86-10-88097398 ext.6004 -------------------------------------------------------------------- ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
