Hi. I'm having trouble with nut-2.0.3 on a linux kernel 2.4.32 machine and a MGE Evolution 3000. The problem is that I'm getting the following message, repeatidly, on dmesg:
usbdevfs: usb_submit_urb returned -22 (-22 means -EINVAL) I traced the problem with newhidups -DDDDDD auto and found out that the -22 error appears in a line "none (-22)" of the output as: ---------- upsdrv_updateinfo... Waiting for notifications... none (-22) entering string_to_path() parsing UPS Looking up UPS ---------- The function calls in userspace are: [newhidups.c] upsdrv_updateinfo() [libhid.c] HIDGetEvents() [libusb.c] libusb_get_interrupt() [libusb] usb_interrupt_read() [libusb] usb_urb_transfer() In the usb_urb_transfer() function one can find that ---------- urb.number_of_packets = 0; /* don't do isochronous yet */ urb.usercontext = NULL; ret = ioctl(dev->fd, IOCTL_USB_SUBMITURB, &urb); ---------- and in the kernel code of linux/drivers/usb/host/uhci.c: ---------- static int uhci_submit_urb(struct urb *urb) [...] case PIPE_ISOCHRONOUS: if (urb->bandwidth == 0) { /* not yet checked/allocated */ if (urb->number_of_packets <= 0) { ret = -EINVAL; ---------- So it seems that setting number_of_packets to zero is directly related with the kernel error. What is going on here? Is it a bug in nut? Cheers, Rodrigo -- *** Rodrigo Martins de Matos Ventura <[EMAIL PROTECTED]> *** Web page: http://www.isr.ist.utl.pt/~yoda *** Teaching Assistant and PhD Student at ISR: *** Instituto de Sistemas e Robotica, Polo de Lisboa *** Instituto Superior Tecnico, Lisboa, PORTUGAL *** PGP fingerprint = 0119 AD13 9EEE 264A 3F10 31D3 89B3 C6C4 60C6 4585 _______________________________________________ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser