On Fri, 24 Aug 2007, Oliver Neukum wrote:
> This schedules the change via a workqueue, so you'll be reprobed. If you
> fire of the first vendor command you are doing so before the configuration
> is changed. How is this supposed to work?
I would do it like this:
static int iphone_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
int rc;
if (udev->actconfig->desc.bConfigurationValue != 3) {
dbg(&udev->dev, "Calling set_configuration\n");
rc = usb_driver_set_configuration(udev, 3);
} else {
dbg(&udev->dev, "Configuration set, sending magic comand\n");
rc = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
0x40, (USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_DEVICE),
0x6400, 0, NULL, 0, 1000);
}
if (rc)
dev_err(&udev->dev, "Command failed: %d\n", rc);
/* we don't really want to bind to the device, userspace programs can
* handle the syncing just fine, so get outta here. */
return -ENODEV;
}
Alan Stern
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