Merge tag 'usb-ci-v4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-testing

Peter writes:

The chipidea changes for v4.5-rc1

- Delete static debug for chipidea driver.
- Suspend USB core when A device tries to switch to peripheral mode,
  at former design, it just stopped SoF simply but USB core doesn't know it.
- Several small changes.

1 files changed, 20 insertions, 8 deletions

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index b292b454c77b..3eafa2c9a2ba 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -26,7 +26,6 @@
 #include "ci.h"
 #include "udc.h"
 #include "bits.h"
-#include "debug.h"
 #include "otg.h"
 #include "otg_fsm.h"
 
@@ -403,9 +402,9 @@ static inline u8 _usb_addr(struct ci_hw_ep *ep)
 }
 
 /**
- * _hardware_queue: configures a request at hardware level
- * @gadget: gadget
+ * _hardware_enqueue: configures a request at hardware level
  * @hwep:   endpoint
+ * @hwreq:  request
  *
  * This function returns an error code
  */
@@ -434,19 +433,28 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
 	if (hwreq->req.dma % PAGE_SIZE)
 		pages--;
 
-	if (rest == 0)
-		add_td_to_list(hwep, hwreq, 0);
+	if (rest == 0) {
+		ret = add_td_to_list(hwep, hwreq, 0);
+		if (ret < 0)
+			goto done;
+	}
 
 	while (rest > 0) {
 		unsigned count = min(hwreq->req.length - hwreq->req.actual,
 					(unsigned)(pages * CI_HDRC_PAGE_SIZE));
-		add_td_to_list(hwep, hwreq, count);
+		ret = add_td_to_list(hwep, hwreq, count);
+		if (ret < 0)
+			goto done;
+
 		rest -= count;
 	}
 
 	if (hwreq->req.zero && hwreq->req.length && hwep->dir == TX
-	    && (hwreq->req.length % hwep->ep.maxpacket == 0))
-		add_td_to_list(hwep, hwreq, 0);
+	    && (hwreq->req.length % hwep->ep.maxpacket == 0)) {
+		ret = add_td_to_list(hwep, hwreq, 0);
+		if (ret < 0)
+			goto done;
+	}
 
 	firstnode = list_first_entry(&hwreq->tds, struct td_node, td);
 
@@ -787,8 +795,12 @@ static void isr_get_status_complete(struct usb_ep *ep, struct usb_request *req)
 
 /**
  * _ep_queue: queues (submits) an I/O request to an endpoint
+ * @ep:        endpoint
+ * @req:       request
+ * @gfp_flags: GFP flags (not used)
  *
  * Caller must hold lock
+ * This function returns an error code
  */
 static int _ep_queue(struct usb_ep *ep, struct usb_request *req,
 		    gfp_t __maybe_unused gfp_flags)