usb: gadget: Refactor request completion

Use the recently introduced usb_gadget_giveback_request() in favor of
direct invocation of the completion routine.

All places in drivers/usb/ matching "[-.]complete(" were replaced with a
call to usb_gadget_giveback_request(). This was compile-tested with all
ARM drivers enabled and runtime-tested for musb.

Signed-off-by: Michal Sojka <sojka@merica.cz>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/gadget/udc/amd5536udc.c b/drivers/usb/gadget/udc/amd5536udc.c
index 41b062e..3b9d138 100644
--- a/drivers/usb/gadget/udc/amd5536udc.c
+++ b/drivers/usb/gadget/udc/amd5536udc.c
@@ -841,7 +841,7 @@
 		&req->req, req->req.length, ep->ep.name, sts);
 
 	spin_unlock(&dev->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&dev->lock);
 	ep->halted = halted;
 }
diff --git a/drivers/usb/gadget/udc/at91_udc.c b/drivers/usb/gadget/udc/at91_udc.c
index cfd18bc..9968f53 100644
--- a/drivers/usb/gadget/udc/at91_udc.c
+++ b/drivers/usb/gadget/udc/at91_udc.c
@@ -267,7 +267,7 @@
 
 	ep->stopped = 1;
 	spin_unlock(&udc->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&udc->lock);
 	ep->stopped = stopped;
 
diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
index c9fe67e..1529926 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
@@ -463,7 +463,7 @@
 			list_del_init(&req->queue);
 			usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY);
 			spin_unlock(&udc->lock);
-			req->req.complete(&ep->ep, &req->req);
+			usb_gadget_giveback_request(&ep->ep, &req->req);
 			spin_lock(&udc->lock);
 		}
 
@@ -495,7 +495,7 @@
 		ep->ep.name, req, req->req.status, req->req.actual);
 
 	spin_unlock(&udc->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&udc->lock);
 }
 
diff --git a/drivers/usb/gadget/udc/bcm63xx_udc.c b/drivers/usb/gadget/udc/bcm63xx_udc.c
index e969eb8..2235b88 100644
--- a/drivers/usb/gadget/udc/bcm63xx_udc.c
+++ b/drivers/usb/gadget/udc/bcm63xx_udc.c
@@ -1088,7 +1088,7 @@
 			breq->req.status = -ESHUTDOWN;
 
 			spin_unlock_irqrestore(&udc->lock, flags);
-			breq->req.complete(&iudma->bep->ep, &breq->req);
+			usb_gadget_giveback_request(&iudma->bep->ep, &breq->req);
 			spin_lock_irqsave(&udc->lock, flags);
 		}
 	}
diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index 2b54955..81dc595 100644
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -258,7 +258,7 @@
 		req->req.status = -ESHUTDOWN;
 
 		spin_unlock(&dum->lock);
-		req->req.complete(&ep->ep, &req->req);
+		usb_gadget_giveback_request(&ep->ep, &req->req);
 		spin_lock(&dum->lock);
 	}
 }
@@ -658,7 +658,7 @@
 		spin_unlock(&dum->lock);
 		_req->actual = _req->length;
 		_req->status = 0;
-		_req->complete(_ep, _req);
+		usb_gadget_giveback_request(_ep, _req);
 		spin_lock(&dum->lock);
 	}  else
 		list_add_tail(&req->queue, &ep->queue);
@@ -702,7 +702,7 @@
 		dev_dbg(udc_dev(dum),
 				"dequeued req %p from %s, len %d buf %p\n",
 				req, _ep->name, _req->length, _req->buf);
-		_req->complete(_ep, _req);
+		usb_gadget_giveback_request(_ep, _req);
 	}
 	local_irq_restore(flags);
 	return retval;
@@ -1385,7 +1385,7 @@
 			list_del_init(&req->queue);
 
 			spin_unlock(&dum->lock);
-			req->req.complete(&ep->ep, &req->req);
+			usb_gadget_giveback_request(&ep->ep, &req->req);
 			spin_lock(&dum->lock);
 
 			/* requests might have been unlinked... */
@@ -1761,7 +1761,7 @@
 						req);
 
 				spin_unlock(&dum->lock);
-				req->req.complete(&ep->ep, &req->req);
+				usb_gadget_giveback_request(&ep->ep, &req->req);
 				spin_lock(&dum->lock);
 				ep->already_seen = 0;
 				goto restart;
diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index e143d69..1d31592 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -70,7 +70,7 @@
 		req->req.status = status;
 
 	spin_unlock(&ep->fotg210->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&ep->fotg210->lock);
 
 	if (ep->epnum) {
diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c
index 7324308..dd18ea3 100644
--- a/drivers/usb/gadget/udc/fsl_qe_udc.c
+++ b/drivers/usb/gadget/udc/fsl_qe_udc.c
@@ -118,10 +118,7 @@
 	ep->stopped = 1;
 	spin_unlock(&udc->lock);
 
-	/* this complete() should a func implemented by gadget layer,
-	 * eg fsg->bulk_in_complete() */
-	if (req->req.complete)
-		req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 
 	spin_lock(&udc->lock);
 
@@ -2728,4 +2725,3 @@
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_LICENSE("GPL");
-
diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c
index 75b23ea..c362079 100644
--- a/drivers/usb/gadget/udc/fsl_udc_core.c
+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
@@ -197,10 +197,8 @@
 	ep->stopped = 1;
 
 	spin_unlock(&ep->udc->lock);
-	/* complete() is from gadget layer,
-	 * eg fsg->bulk_in_complete() */
-	if (req->req.complete)
-		req->req.complete(&ep->ep, &req->req);
+
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 
 	spin_lock(&ep->udc->lock);
 	ep->stopped = stopped;
diff --git a/drivers/usb/gadget/udc/fusb300_udc.c b/drivers/usb/gadget/udc/fusb300_udc.c
index 5c5d1ad..8286df7 100644
--- a/drivers/usb/gadget/udc/fusb300_udc.c
+++ b/drivers/usb/gadget/udc/fusb300_udc.c
@@ -876,7 +876,7 @@
 		req->req.status = status;
 
 	spin_unlock(&ep->fusb300->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&ep->fusb300->lock);
 
 	if (ep->epnum) {
diff --git a/drivers/usb/gadget/udc/goku_udc.c b/drivers/usb/gadget/udc/goku_udc.c
index 6c85839..bf9c5ef 100644
--- a/drivers/usb/gadget/udc/goku_udc.c
+++ b/drivers/usb/gadget/udc/goku_udc.c
@@ -320,7 +320,7 @@
 	/* don't modify queue heads during completion callback */
 	ep->stopped = 1;
 	spin_unlock(&dev->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&dev->lock);
 	ep->stopped = stopped;
 }
diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c
index ecd10b5..1b3048a 100644
--- a/drivers/usb/gadget/udc/gr_udc.c
+++ b/drivers/usb/gadget/udc/gr_udc.c
@@ -357,7 +357,7 @@
 	} else if (req->req.complete) {
 		spin_unlock(&dev->lock);
 
-		req->req.complete(&ep->ep, &req->req);
+		usb_gadget_giveback_request(&ep->ep, &req->req);
 
 		spin_lock(&dev->lock);
 	}
diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c
index 1629ad7..feab0ba 100644
--- a/drivers/usb/gadget/udc/lpc32xx_udc.c
+++ b/drivers/usb/gadget/udc/lpc32xx_udc.c
@@ -1479,7 +1479,7 @@
 
 	ep->req_pending = 0;
 	spin_unlock(&udc->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&udc->lock);
 }
 
diff --git a/drivers/usb/gadget/udc/m66592-udc.c b/drivers/usb/gadget/udc/m66592-udc.c
index de88d33..8985656 100644
--- a/drivers/usb/gadget/udc/m66592-udc.c
+++ b/drivers/usb/gadget/udc/m66592-udc.c
@@ -729,7 +729,7 @@
 		restart = 1;
 
 	spin_unlock(&ep->m66592->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&ep->m66592->lock);
 
 	if (restart) {
diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c b/drivers/usb/gadget/udc/mv_u3d_core.c
index 1624871..046a1f8 100644
--- a/drivers/usb/gadget/udc/mv_u3d_core.c
+++ b/drivers/usb/gadget/udc/mv_u3d_core.c
@@ -222,12 +222,8 @@
 	}
 
 	spin_unlock(&ep->u3d->lock);
-	/*
-	 * complete() is from gadget layer,
-	 * eg fsg->bulk_in_complete()
-	 */
-	if (req->req.complete)
-		req->req.complete(&ep->ep, &req->req);
+
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 
 	spin_lock(&ep->u3d->lock);
 }
diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c
index 040fb16..3c5db80 100644
--- a/drivers/usb/gadget/udc/mv_udc_core.c
+++ b/drivers/usb/gadget/udc/mv_udc_core.c
@@ -248,12 +248,8 @@
 	ep->stopped = 1;
 
 	spin_unlock(&ep->udc->lock);
-	/*
-	 * complete() is from gadget layer,
-	 * eg fsg->bulk_in_complete()
-	 */
-	if (req->req.complete)
-		req->req.complete(&ep->ep, &req->req);
+
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 
 	spin_lock(&ep->udc->lock);
 	ep->stopped = stopped;
diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c
index 059cfe5..84d7162 100644
--- a/drivers/usb/gadget/udc/net2272.c
+++ b/drivers/usb/gadget/udc/net2272.c
@@ -394,7 +394,7 @@
 	/* don't modify queue heads during completion callback */
 	ep->stopped = 1;
 	spin_unlock(&dev->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&dev->lock);
 	ep->stopped = stopped;
 }
diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c
index 2e95715..8d13337 100644
--- a/drivers/usb/gadget/udc/net2280.c
+++ b/drivers/usb/gadget/udc/net2280.c
@@ -928,7 +928,7 @@
 	/* don't modify queue heads during completion callback */
 	ep->stopped = 1;
 	spin_unlock(&dev->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&dev->lock);
 	ep->stopped = stopped;
 }
diff --git a/drivers/usb/gadget/udc/omap_udc.c b/drivers/usb/gadget/udc/omap_udc.c
index e731373..dcdfea4 100644
--- a/drivers/usb/gadget/udc/omap_udc.c
+++ b/drivers/usb/gadget/udc/omap_udc.c
@@ -315,7 +315,7 @@
 	/* don't modify queue heads during completion callback */
 	ep->stopped = 1;
 	spin_unlock(&ep->udc->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&ep->udc->lock);
 	ep->stopped = stopped;
 }
diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c
index 460d953..ccbe3d4 100644
--- a/drivers/usb/gadget/udc/pch_udc.c
+++ b/drivers/usb/gadget/udc/pch_udc.c
@@ -1490,7 +1490,7 @@
 	spin_unlock(&dev->lock);
 	if (!ep->in)
 		pch_udc_ep_clear_rrdy(ep);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&dev->lock);
 	ep->halted = halted;
 }
diff --git a/drivers/usb/gadget/udc/pxa25x_udc.c b/drivers/usb/gadget/udc/pxa25x_udc.c
index 251e4d5..42f7eeb 100644
--- a/drivers/usb/gadget/udc/pxa25x_udc.c
+++ b/drivers/usb/gadget/udc/pxa25x_udc.c
@@ -347,7 +347,7 @@
 
 	/* don't modify queue heads during completion callback */
 	ep->stopped = 1;
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	ep->stopped = stopped;
 }
 
diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
index 597d39f89..4868369 100644
--- a/drivers/usb/gadget/udc/pxa27x_udc.c
+++ b/drivers/usb/gadget/udc/pxa27x_udc.c
@@ -758,7 +758,7 @@
 	if (pflags)
 		spin_unlock_irqrestore(&ep->lock, *pflags);
 	local_irq_save(flags);
-	req->req.complete(&req->udc_usb_ep->usb_ep, &req->req);
+	usb_gadget_giveback_request(&req->udc_usb_ep->usb_ep, &req->req);
 	local_irq_restore(flags);
 	if (pflags)
 		spin_lock_irqsave(&ep->lock, *pflags);
diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c
index de9c400..f818661 100644
--- a/drivers/usb/gadget/udc/r8a66597-udc.c
+++ b/drivers/usb/gadget/udc/r8a66597-udc.c
@@ -925,7 +925,7 @@
 		sudmac_free_channel(ep->r8a66597, ep, req);
 
 	spin_unlock(&ep->r8a66597->lock);
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	spin_lock(&ep->r8a66597->lock);
 
 	if (restart) {
diff --git a/drivers/usb/gadget/udc/s3c-hsudc.c b/drivers/usb/gadget/udc/s3c-hsudc.c
index 10c6a12..dfbf557 100644
--- a/drivers/usb/gadget/udc/s3c-hsudc.c
+++ b/drivers/usb/gadget/udc/s3c-hsudc.c
@@ -258,8 +258,7 @@
 
 	hsep->stopped = 1;
 	spin_unlock(&hsudc->lock);
-	if (hsreq->req.complete != NULL)
-		hsreq->req.complete(&hsep->ep, &hsreq->req);
+	usb_gadget_giveback_request(&hsep->ep, &hsreq->req);
 	spin_lock(&hsudc->lock);
 	hsep->stopped = stopped;
 }
diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c
index 357b58e..ff423d1 100644
--- a/drivers/usb/gadget/udc/s3c2410_udc.c
+++ b/drivers/usb/gadget/udc/s3c2410_udc.c
@@ -272,7 +272,7 @@
 		status = req->req.status;
 
 	ep->halted = 1;
-	req->req.complete(&ep->ep, &req->req);
+	usb_gadget_giveback_request(&ep->ep, &req->req);
 	ep->halted = halted;
 }