svn commit: r235410 - in stable/9/sys: dev/usb i386/conf kern

[Andriy Gapon]

Author: avg
Date: Sun May 13 17:14:26 2012
New Revision: 235410
URL: http://svn.freebsd.org/changeset/base/235410

Log:
  MFC r228760: adapt usb transfer code for SCHEDULER_STOPPED

Modified:
  stable/9/sys/dev/usb/usb_transfer.c
Directory Properties:
  stable/9/sys/   (props changed)
  stable/9/sys/amd64/include/xen/   (props changed)
  stable/9/sys/boot/   (props changed)
  stable/9/sys/boot/i386/efi/   (props changed)
  stable/9/sys/boot/ia64/efi/   (props changed)
  stable/9/sys/boot/ia64/ski/   (props changed)
  stable/9/sys/boot/powerpc/boot1.chrp/   (props changed)
  stable/9/sys/boot/powerpc/ofw/   (props changed)
  stable/9/sys/cddl/contrib/opensolaris/   (props changed)
  stable/9/sys/conf/   (props changed)
  stable/9/sys/contrib/dev/acpica/   (props changed)
  stable/9/sys/contrib/octeon-sdk/   (props changed)
  stable/9/sys/contrib/pf/   (props changed)
  stable/9/sys/contrib/x86emu/   (props changed)
  stable/9/sys/fs/   (props changed)
  stable/9/sys/fs/ntfs/   (props changed)
  stable/9/sys/i386/conf/XENHVM   (props changed)
  stable/9/sys/kern/subr_witness.c   (props changed)

Modified: stable/9/sys/dev/usb/usb_transfer.c
==============================================================================
--- stable/9/sys/dev/usb/usb_transfer.c	Sun May 13 17:13:21 2012	(r235409)
+++ stable/9/sys/dev/usb/usb_transfer.c	Sun May 13 17:14:26 2012	(r235410)
@@ -2151,7 +2151,7 @@ usbd_callback_wrapper(struct usb_xfer_qu
 	struct usb_xfer_root *info = xfer->xroot;
 
 	USB_BUS_LOCK_ASSERT(info->bus, MA_OWNED);
-	if (!mtx_owned(info->xfer_mtx)) {
+	if (!mtx_owned(info->xfer_mtx) && !SCHEDULER_STOPPED()) {
 		/*
 	       	 * Cases that end up here:
 		 *
@@ -3124,14 +3124,14 @@ usbd_transfer_poll(struct usb_xfer **ppx
 
 		/* make sure that the BUS mutex is not locked */
 		drop_bus = 0;
-		while (mtx_owned(&xroot->udev->bus->bus_mtx)) {
+		while (mtx_owned(&xroot->udev->bus->bus_mtx) && !SCHEDULER_STOPPED()) {
 			mtx_unlock(&xroot->udev->bus->bus_mtx);
 			drop_bus++;
 		}
 
 		/* make sure that the transfer mutex is not locked */
 		drop_xfer = 0;
-		while (mtx_owned(xroot->xfer_mtx)) {
+		while (mtx_owned(xroot->xfer_mtx) && !SCHEDULER_STOPPED()) {
 			mtx_unlock(xroot->xfer_mtx);
 			drop_xfer++;
 		}