5 files changed, 57 insertions, 17 deletions

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 87cbd56cc761..029692053dd3 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1156,8 +1156,8 @@ static struct musb_fifo_cfg mode_2_cfg[] = {
 { .hw_ep_num = 1, .style = FIFO_RX,   .maxpacket = 512, },
 { .hw_ep_num = 2, .style = FIFO_TX,   .maxpacket = 512, },
 { .hw_ep_num = 2, .style = FIFO_RX,   .maxpacket = 512, },
-{ .hw_ep_num = 3, .style = FIFO_RXTX, .maxpacket = 256, },
-{ .hw_ep_num = 4, .style = FIFO_RXTX, .maxpacket = 256, },
+{ .hw_ep_num = 3, .style = FIFO_RXTX, .maxpacket = 960, },
+{ .hw_ep_num = 4, .style = FIFO_RXTX, .maxpacket = 1024, },
 };
 
 /* mode 3 - fits in 4KB */
@@ -2671,6 +2671,13 @@ static int musb_suspend(struct device *dev)
 {
 	struct musb	*musb = dev_to_musb(dev);
 	unsigned long	flags;
+	int ret;
+
+	ret = pm_runtime_get_sync(dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(dev);
+		return ret;
+	}
 
 	musb_platform_disable(musb);
 	musb_disable_interrupts(musb);
@@ -2721,14 +2728,6 @@ static int musb_resume(struct device *dev)
 	if ((devctl & mask) != (musb->context.devctl & mask))
 		musb->port1_status = 0;
 
-	/*
-	 * The USB HUB code expects the device to be in RPM_ACTIVE once it came
-	 * out of suspend
-	 */
-	pm_runtime_disable(dev);
-	pm_runtime_set_active(dev);
-	pm_runtime_enable(dev);
-
 	musb_start(musb);
 
 	spin_lock_irqsave(&musb->lock, flags);
@@ -2738,6 +2737,9 @@ static int musb_resume(struct device *dev)
 			error);
 	spin_unlock_irqrestore(&musb->lock, flags);
 
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
 	return 0;
 }
 
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 9f22c5b8ce37..c748f4ac1154 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -465,6 +465,30 @@ static inline struct musb *gadget_to_musb(struct usb_gadget *g)
 	return container_of(g, struct musb, g);
 }
 
+static inline char *musb_ep_xfertype_string(u8 type)
+{
+	char *s;
+
+	switch (type) {
+	case USB_ENDPOINT_XFER_CONTROL:
+		s = "ctrl";
+		break;
+	case USB_ENDPOINT_XFER_ISOC:
+		s = "iso";
+		break;
+	case USB_ENDPOINT_XFER_BULK:
+		s = "bulk";
+		break;
+	case USB_ENDPOINT_XFER_INT:
+		s = "int";
+		break;
+	default:
+		s = "";
+		break;
+	}
+	return s;
+}
+
 #ifdef CONFIG_BLACKFIN
 static inline int musb_read_fifosize(struct musb *musb,
 		struct musb_hw_ep *hw_ep, u8 epnum)
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index bc6a9be2ccc5..f6b526606ad1 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -1015,13 +1015,20 @@ static int dsps_suspend(struct device *dev)
 	const struct dsps_musb_wrapper *wrp = glue->wrp;
 	struct musb *musb = platform_get_drvdata(glue->musb);
 	void __iomem *mbase;
-
-	del_timer_sync(&glue->timer);
+	int ret;
 
 	if (!musb)
 		/* This can happen if the musb device is in -EPROBE_DEFER */
 		return 0;
 
+	ret = pm_runtime_get_sync(dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(dev);
+		return ret;
+	}
+
+	del_timer_sync(&glue->timer);
+
 	mbase = musb->ctrl_base;
 	glue->context.control = musb_readl(mbase, wrp->control);
 	glue->context.epintr = musb_readl(mbase, wrp->epintr_set);
@@ -1060,6 +1067,8 @@ static int dsps_resume(struct device *dev)
 	    musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
 		dsps_mod_timer(glue, -1);
 
+	pm_runtime_put(dev);
+
 	return 0;
 }
 #endif
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 1acc4864f9f6..bc6d1717c9ec 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -1105,11 +1105,7 @@ static int musb_gadget_enable(struct usb_ep *ep,
 
 	pr_debug("%s periph: enabled %s for %s %s, %smaxpacket %d\n",
 			musb_driver_name, musb_ep->end_point.name,
-			({ char *s; switch (musb_ep->type) {
-			case USB_ENDPOINT_XFER_BULK:	s = "bulk"; break;
-			case USB_ENDPOINT_XFER_INT:	s = "int"; break;
-			default:			s = "iso"; break;
-			} s; }),
+			musb_ep_xfertype_string(musb_ep->type),
 			musb_ep->is_in ? "IN" : "OUT",
 			musb_ep->dma ? "dma, " : "",
 			musb_ep->packet_sz);
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 76decb8011eb..b17450a59882 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -139,6 +139,7 @@ static void musb_h_tx_flush_fifo(struct musb_hw_ep *ep)
 				"Could not flush host TX%d fifo: csr: %04x\n",
 				ep->epnum, csr))
 			return;
+		mdelay(1);
 	}
 }
 
@@ -2151,6 +2152,10 @@ static int musb_schedule(
 				(USB_SPEED_HIGH == qh->dev->speed) ? 8 : 4;
 		goto success;
 	} else if (best_end < 0) {
+		dev_err(musb->controller,
+				"%s hwep alloc failed for %dx%d\n",
+				musb_ep_xfertype_string(qh->type),
+				qh->hb_mult, qh->maxpacket);
 		return -ENOSPC;
 	}
 
@@ -2243,6 +2248,10 @@ static int musb_urb_enqueue(
 			ok = (usb_pipein(urb->pipe) && musb->hb_iso_rx)
 				|| (usb_pipeout(urb->pipe) && musb->hb_iso_tx);
 		if (!ok) {
+			dev_err(musb->controller,
+				"high bandwidth %s (%dx%d) not supported\n",
+				musb_ep_xfertype_string(qh->type),
+				qh->hb_mult, qh->maxpacket & 0x7ff);
 			ret = -EMSGSIZE;
 			goto done;
 		}