From owner-svn-src-all@FreeBSD.ORG  Mon Oct  4 21:24:10 2010
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 768AC1065670;
	Mon,  4 Oct 2010 21:24:10 +0000 (UTC)
	(envelope-from hselasky@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 65ADC8FC21;
	Mon,  4 Oct 2010 21:24:10 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id o94LOAfG027806;
	Mon, 4 Oct 2010 21:24:10 GMT (envelope-from hselasky@svn.freebsd.org)
Received: (from hselasky@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id o94LOAJw027804;
	Mon, 4 Oct 2010 21:24:10 GMT (envelope-from hselasky@svn.freebsd.org)
Message-Id: <201010042124.o94LOAJw027804@svn.freebsd.org>
From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Mon, 4 Oct 2010 21:24:10 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r213425 - head/sys/dev/usb/controller
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
	user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
	<mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
	<mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 04 Oct 2010 21:24:10 -0000

Author: hselasky
Date: Mon Oct  4 21:24:10 2010
New Revision: 213425
URL: http://svn.freebsd.org/changeset/base/213425

Log:
  The root mount hold reference was not released on USB controller
  attach failures during boot. Fix this.
  
  Approved by:    thompsa (mentor)

Modified:
  head/sys/dev/usb/controller/usb_controller.c

Modified: head/sys/dev/usb/controller/usb_controller.c
==============================================================================
--- head/sys/dev/usb/controller/usb_controller.c	Mon Oct  4 21:01:27 2010	(r213424)
+++ head/sys/dev/usb/controller/usb_controller.c	Mon Oct  4 21:24:10 2010	(r213425)
@@ -121,6 +121,16 @@ usb_probe(device_t dev)
 	return (0);
 }
 
+static void
+usb_root_mount_rel(struct usb_bus *bus)
+{
+	if (bus->bus_roothold != NULL) {
+		DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold);
+		root_mount_rel(bus->bus_roothold);
+		bus->bus_roothold = NULL;
+	}
+}
+
 /*------------------------------------------------------------------------*
  *	usb_attach
  *------------------------------------------------------------------------*/
@@ -164,10 +174,7 @@ usb_detach(device_t dev)
 	usb_callout_drain(&bus->power_wdog);
 
 	/* Let the USB explore process detach all devices. */
-	if (bus->bus_roothold != NULL) {
-		root_mount_rel(bus->bus_roothold);
-		bus->bus_roothold = NULL;
-	}
+	usb_root_mount_rel(bus);
 
 	USB_BUS_LOCK(bus);
 	if (usb_proc_msignal(&bus->explore_proc,
@@ -244,10 +251,7 @@ usb_bus_explore(struct usb_proc_msg *pm)
 		(udev->hub->explore) (udev);
 		USB_BUS_LOCK(bus);
 	}
-	if (bus->bus_roothold != NULL) {
-		root_mount_rel(bus->bus_roothold);
-		bus->bus_roothold = NULL;
-	}
+	usb_root_mount_rel(bus);
 }
 
 /*------------------------------------------------------------------------*
@@ -353,6 +357,7 @@ usb_bus_attach(struct usb_proc_msg *pm)
 
 	default:
 		device_printf(bus->bdev, "Unsupported USB revision\n");
+		usb_root_mount_rel(bus);
 		return;
 	}
 
@@ -394,6 +399,7 @@ usb_bus_attach(struct usb_proc_msg *pm)
 	if (err) {
 		device_printf(bus->bdev, "Root HUB problem, error=%s\n",
 		    usbd_errstr(err));
+		usb_root_mount_rel(bus);
 	}
 
 	/* set softc - we are ready */