#include #include #include #include #include #define USB_VENDOR_ID_THRUSTMASTER 0x044f struct api_context { struct completion done; int status; }; struct api_context ctx; int usb_start_wait_urb(struct urb *urb, int timeout, int *actual_length) { unsigned long expire; int retval; init_completion(&ctx.done); urb->context = &ctx; urb->actual_length = 0; retval = usb_submit_urb(urb, GFP_ATOMIC); if (unlikely(retval)) goto out; expire = timeout ? msecs_to_jiffies(timeout) : MAX_SCHEDULE_TIMEOUT; if (!wait_for_completion_timeout(&ctx.done, expire)) { usb_kill_urb(urb); retval = (ctx.status == -ENOENT ? -ETIMEDOUT : ctx.status); dev_dbg(&urb->dev->dev, "%s timed out on ep%d%s len=%u/%u\n", current->comm, usb_endpoint_num(&urb->ep->desc), usb_urb_dir_in(urb) ? "in" : "out", urb->actual_length, urb->transfer_buffer_length); } else retval = ctx.status; out: if (actual_length) *actual_length = urb->actual_length; usb_free_urb(urb); return retval; }