On Sat, 19 Aug 2006, Peter Oehry wrote:
> There is one small question left.
>
> What shall we return in the usb_driver_set_configuration when the
> schedule_work() returns zero? I belive it should be a negative number. But
> which error code would be appropriate?
>
> rc = schedule_work(&req->work); /* returns 0 on error - 1 if successful
> */
> if (!rc) {
> usb_put_dev(udev);
> kfree(req);
> return ???? /* << which return would be appropriate? */
> }
> return 0; /* << I've replace return rc by return 0 */
Here's the version I will submit:
int usb_driver_set_configuration(struct usb_device *udev, int config)
{
struct set_config_request *req;
req = kmalloc(sizeof(*req), GFP_KERNEL);
if (!req)
return -ENOMEM;
req->udev = udev;
req->config = config;
INIT_WORK(&req->work, driver_set_config_work, req);
usb_get_dev(udev);
if (!schedule_work(&req->work)) {
usb_put_dev(udev);
kfree(req);
return -EINVAL;
}
return 0;
}
Alan Stern
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