From: wlf <wulf@rock-chips.com>
Date: Mon, 12 May 2014 09:02:05 +0000 (+0800)
Subject: USB: Fix usb host hotplug bug.
X-Git-Tag: firefly_0821_release~5304
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=fbd37031c11761882188e4b1f5c62bdf83a6c6f3;p=firefly-linux-kernel-4.4.55.git

USB: Fix usb host hotplug bug.
---

diff --git a/drivers/usb/dwc_otg_310/dwc_otg_hcd.c b/drivers/usb/dwc_otg_310/dwc_otg_hcd.c
index 1ac55659ca4b..42c241440966 100755
--- a/drivers/usb/dwc_otg_310/dwc_otg_hcd.c
+++ b/drivers/usb/dwc_otg_310/dwc_otg_hcd.c
@@ -177,7 +177,7 @@ static void kill_urbs_in_qh_list(dwc_otg_hcd_t * hcd, dwc_list_link_t * qh_list)
 			qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
 			if (qtd->urb != NULL) {
 				hcd->fops->complete(hcd, qtd->urb->priv,
-						    qtd->urb, -DWC_E_TIMEOUT);
+						    qtd->urb, -DWC_E_SHUTDOWN);
 				dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
 			}
 
@@ -489,7 +489,7 @@ int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_t * hcd,
 
 	if (!hcd->flags.b.port_connect_status) {
 		/* No longer connected. */
-		DWC_ERROR("Not connected\n");
+		DWC_DEBUG("Not connected\n");
 		return -DWC_E_NO_DEVICE;
 	}
 
diff --git a/drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c b/drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c
index dfec664b39ce..de629e0e72d9 100755
--- a/drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c
+++ b/drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c
@@ -48,6 +48,7 @@
 int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd)
 {
 	int retval = 0;
+	dwc_irqflags_t flags;
 
 	dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
 	gintsts_data_t gintsts;
@@ -64,12 +65,12 @@ int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd)
 	if (core_if->hibernation_suspend == 1) {
 		return retval;
 	}
-	DWC_SPINLOCK(dwc_otg_hcd->lock);
+	DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
 	/* Check if HOST Mode */
 	if (dwc_otg_is_host_mode(core_if)) {
 		gintsts.d32 = dwc_otg_read_core_intr(core_if);
 		if (!gintsts.d32) {
-			DWC_SPINUNLOCK(dwc_otg_hcd->lock);
+			DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
 			return 0;
 		}
 #ifdef DEBUG
@@ -138,7 +139,7 @@ int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd)
 #endif
 
 	}
-	DWC_SPINUNLOCK(dwc_otg_hcd->lock);
+	DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
 	return retval;
 }
 
@@ -1822,6 +1823,11 @@ static int32_t handle_hc_datatglerr_intr(dwc_otg_hcd_t * hcd,
 {
 	DWC_ERROR("--Host Channel %d Interrupt: "
 		  "Data Toggle Error--\n", hc->hc_num);
+	if (!hcd->flags.b.port_connect_status) {
+		/* No longer connected. */
+		DWC_ERROR("Not connected\n");
+		return 1;
+	}
 	if (hc->ep_is_in) {
 		qtd->error_count += 3;//Complete the error URB immediately
 	} else {