Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 34 insertions, 7 deletions

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 4bfb7ac0239f..764f668d45a9 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -86,10 +86,8 @@ static int hw_device_state(struct ci_hdrc *ci, u32 dma)
 		/* interrupt, error, port change, reset, sleep/suspend */
 		hw_write(ci, OP_USBINTR, ~0,
 			     USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI);
-		hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
 	} else {
 		hw_write(ci, OP_USBINTR, ~0, 0);
-		hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
 	}
 	return 0;
 }
@@ -522,6 +520,20 @@ static void free_pending_td(struct ci_hw_ep *hwep)
 	kfree(pending);
 }
 
+static int reprime_dtd(struct ci_hdrc *ci, struct ci_hw_ep *hwep,
+					   struct td_node *node)
+{
+	hwep->qh.ptr->td.next = node->dma;
+	hwep->qh.ptr->td.token &=
+		cpu_to_le32(~(TD_STATUS_HALTED | TD_STATUS_ACTIVE));
+
+	/* Synchronize before ep prime */
+	wmb();
+
+	return hw_ep_prime(ci, hwep->num, hwep->dir,
+				hwep->type == USB_ENDPOINT_XFER_CONTROL);
+}
+
 /**
  * _hardware_dequeue: handles a request at hardware level
  * @gadget: gadget
@@ -535,6 +547,7 @@ static int _hardware_dequeue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
 	struct td_node *node, *tmpnode;
 	unsigned remaining_length;
 	unsigned actual = hwreq->req.length;
+	struct ci_hdrc *ci = hwep->ci;
 
 	if (hwreq->req.status != -EALREADY)
 		return -EINVAL;
@@ -544,6 +557,11 @@ static int _hardware_dequeue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
 	list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) {
 		tmptoken = le32_to_cpu(node->ptr->token);
 		if ((TD_STATUS_ACTIVE & tmptoken) != 0) {
+			int n = hw_ep_bit(hwep->num, hwep->dir);
+
+			if (ci->rev == CI_REVISION_24)
+				if (!hw_read(ci, OP_ENDPTSTAT, BIT(n)))
+					reprime_dtd(ci, hwep, node);
 			hwreq->req.status = -EALREADY;
 			return -EBUSY;
 		}
@@ -1162,10 +1180,13 @@ static int ep_enable(struct usb_ep *ep,
 
 	/* only internal SW should enable ctrl endpts */
 
-	hwep->ep.desc = desc;
-
-	if (!list_empty(&hwep->qh.queue))
+	if (!list_empty(&hwep->qh.queue)) {
 		dev_warn(hwep->ci->dev, "enabling a non-empty endpoint!\n");
+		spin_unlock_irqrestore(hwep->lock, flags);
+		return -EBUSY;
+	}
+
+	hwep->ep.desc = desc;
 
 	hwep->dir  = usb_endpoint_dir_in(desc) ? TX : RX;
 	hwep->num  = usb_endpoint_num(desc);
@@ -1485,7 +1506,9 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
 			hw_device_reset(ci);
 			hw_device_state(ci, ci->ep0out->qh.dma);
 			usb_gadget_set_state(_gadget, USB_STATE_POWERED);
+			usb_udc_vbus_handler(_gadget, true);
 		} else {
+			usb_udc_vbus_handler(_gadget, false);
 			if (ci->driver)
 				ci->driver->disconnect(&ci->gadget);
 			hw_device_state(ci, 0);
@@ -1551,13 +1574,16 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on)
 {
 	struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
 
-	if (!ci->vbus_active)
-		return -EOPNOTSUPP;
+	/* Data+ pullup controlled by OTG state machine in OTG fsm mode */
+	if (ci_otg_is_fsm_mode(ci))
+		return 0;
 
+	pm_runtime_get_sync(&ci->gadget.dev);
 	if (is_on)
 		hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
 	else
 		hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
+	pm_runtime_put_sync(&ci->gadget.dev);
 
 	return 0;
 }
@@ -1687,6 +1713,7 @@ static int ci_udc_start(struct usb_gadget *gadget,
 		spin_lock_irqsave(&ci->lock, flags);
 		hw_device_reset(ci);
 	} else {
+		usb_udc_vbus_handler(&ci->gadget, false);
 		pm_runtime_put_sync(&ci->gadget.dev);
 		return retval;
 	}