On 2013-12-12 19:01, Felipe Balbi wrote:
Hi,
On Wed, Dec 04, 2013 at 09:13:58AM +0100, Andreas Larsson wrote:
+static void gr_finish_request(struct gr_ep *ep, struct gr_request *req,
+ int status)
+{
+ struct gr_udc *dev;
+
+ list_del_init(&req->queue);
+
+ if (likely(req->req.status == -EINPROGRESS))
+ req->req.status = status;
+ else
+ status = req->req.status;
+
+ dev = ep->dev;
+ usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in);
+ gr_free_dma_desc_chain(dev, req);
+
+ if (ep->is_in) /* For OUT, actual gets updated bit by bit */
+ req->req.actual = req->req.length;
+
+ if (!status) {
+ if (ep->is_in)
+ gr_dbgprint_request("SENT", ep, req);
+ else
+ gr_dbgprint_request("RECV", ep, req);
+ }
+
+ /* Prevent changes to ep->queue during callback */
+ ep->callback = 1;
+ if (req == dev->ep0reqo && !status) {
+ if (req->setup)
+ gr_ep0_setup(dev, req);
+ else
+ dev_err(dev->dev,
+ "Unexpected non setup packet on ep0in\n");
+ } else if (req->req.complete) {
+ unsigned long flags;
+
+ /*
+ * Complete should be called with interrupts disabled according
+ * to the contract of struct usb_request
+ */
+ local_irq_save(flags);
sorry but this driver isn't ready for inclusion. local_irq_save() is a
pretty good hint that there's something wrong in the driver. Consider
the fact that local_irq_save() will disable preemption even when
CONFIG_PREEMPT_FULL is enabled and you have a bit a problem.
This connection between local_irq_save and CONFIG_PREEMPT_RT_FULL was
unknown to me. Sure, I can disable interrupts right at spin lock time.
Also, the way you're using thread IRQs is quite wrong. I can't let that
pass and get merged upstream, sorry.
What is quite wrong? What is it that I need to fix?
Best regards,
Andreas Larsson
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