Re: usb_control_msg question

Should be usb_sndctrlpipe, but regardless, I am still experiencing the
same thing.

   ret = usb_control_msg(dev,
             usb_sndctrlpipe(dev, 0),
             SET_IDLE,
             (0x01 << 5) + 0x01,
             0xaa00, 0, data, 0, USB_CTRL_SET_TIMEOUT);

On 7/17/07, Gabriel Maganis <[email protected]> wrote:
> Hello,
>    I am trying to send commands to a keyboard to set the idle rate and
> confirm that it's been set like below,
>    #define SET_IDLE 0x0A
>    #define GET_IDLE 0x02
>
>    unsigned char data[1] = {0};
>
>    ret = usb_control_msg(dev,
>             usb_rcvctrlpipe(dev, 0),
>             SET_IDLE,
>             (0x01 << 5) + 0x01,
>             0xaa00, 0, data, 0, USB_CTRL_SET_TIMEOUT);
>
>     ret = usb_control_msg(dev,
>             usb_rcvctrlpipe(dev, 0),
>             GET_IDLE,
>             (0x01 << 7) + (0x01 << 5) + 0x01,
>             0x0000, 0, data, 1, USB_CTRL_GET_TIMEOUT);
>
>     printk("%02x\n", data[0]);
>
> The printk always gives me a zero but the value of ret for GET_IDLE is
> always 1. I've been able to do all of this using libusb in user space
> but have no success within a kernel module. I've also looked at
> devio.c for reference and have run out of ideas of what could be
> wrong. Also, when I try to do a SET_REPORT using usb_control_msg in
> the kernel just like with libusb, my host controller shuts down and
> breaks like I sent _it_ the command.
>
> Thanks..
>

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