On Mon, 27 Jun 2005, coin wrote:
> HI, did you remember me? I can't with this.
> Now I get the next result after disconnect usbdevice, then connect,
> and send data bulk.
>
> kernel: usb 2-1: usbfs: USBDEVFS_BULK failed ep 0x1 len 4 ret -22
>
>
> This is the code
>
> fd = open("/proc/bus/usb/002/002", O_RDWR);
> if(fd != -1) {
> bulk.ep = 1;
> bulk.len = 4;
> bulk.data = data;
> bulk.timeout = 1000;
> ioctl(fd, USBDEVFS_BULK, &bulk);
> perror("ioctl");
> close(fd);
> }
>
> Thank you
Do you issue the DISCONNECT and CLAIMINTERFACE ioctl calls again after the
device is reconnected? Remember, each time it connects the kernel will
bind it to the hiddev driver -- which will prevent your program from using
it.
Alan Stern
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