I have looked into NUT source and it seems that this error message is output after interaction with libusb, not hiddev. It looks like libusb's usb_claim_interface() or usb_control_msg() in in 2.6.22-rc3 is failing with -EPERM.
So I am adding USB devel mailinglist into CC and leaving the original message below for reference. On Sat, 2 Jun 2007, Justin Piszcz wrote: > I use nut-2.0.4-4 with a UPS attached via USB and from 2.6.21.3 -> 2.6.22-rc3 > it stops working, see below. My .config is attached. > > 2.6.21.3: > > p34:~# /lib/nut/newhidups -u nut -DDDDDD auto > Checking device (050D/0912) (005/002) > - VendorID: 050d > - ProductID: 0912 > - Manufacturer: > - Product: UPS > - Serial Number: unknown > - Bus: 005 > Trying to match device > Device matches > HID descriptor retrieved (Reportlen = 820) > Size read for the report descriptor: 820 > Report descriptor retrieved (Reportlen = 820) > Found HID device > Network UPS Tools: New USB/HID UPS driver 0.28 (2.0.4) > > Report Descriptor size = 820 > Report Descriptor: (200 bytes) => 05 84 09 04 A1 01 05 86 09 26 A1 02 85 01 75 > 08 > Detected a UPS: /UPS > Using subdriver: Belkin HID 0.1 > Looking up 00840004 > Looking up 00860026 > Looking up 00860040 > entering string_to_path() > parsing UPS > Looking up UPS > hid_lookup_usage: found 840004 > parsing BELKINConfig > Looking up BELKINConfig > hid_lookup_usage: found 860026 > parsing BELKINConfigVoltage > Looking up BELKINConfigVoltage > hid_lookup_usage: found 860040 > Path depth = 3 > 0: UPage(84), Usage(4) > 1: UPage(86), Usage(26) > 2: UPage(86), Usage(40) > Entering libusb_get_report > =>> Before exponent: 120, 0/0) > =>> After conversion: 120.000000 (120), 0/0) > Report : (8 bytes) => 01 78 80 00 00 00 00 00 > Path: UPS.BELKINConfig.BELKINConfigVoltage, Type: Feature, Value: 120.000000 > Looking up 00840004 > Looking up 00860026 > Looking up 00860042 > > (works fine) > > 2.6.22-rc3: > > p34:~# /lib/nut/newhidups -u nut -DDDDDD auto > Checking device (050D/0912) (005/002) > - VendorID: 050d > - ProductID: 0912 > - Manufacturer: unknown > - Product: unknown > - Serial Number: unknown > - Bus: 005 > Trying to match device > Device matches > failed to claim USB device, trying 2 more time(s)... > detaching kernel driver from USB device... > failed to detach kernel driver from USB device... > trying again to claim USB device... > failed to claim USB device, trying 1 more time(s)... > detaching kernel driver from USB device... > failed to detach kernel driver from USB device... > trying again to claim USB device... > failed to claim USB device, trying 0 more time(s)... > detaching kernel driver from USB device... > failed to detach kernel driver from USB device... > trying again to claim USB device... > Unable to get HID descriptor (error sending control message: Operation not > permitted) > > -- Jiri Kosina ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
