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From: John Baldwin <jhb@FreeBSD.org>
Date: Tue, 12 Jul 2011 13:28:39 +0000 (UTC)
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Subject: svn commit: r223952 - head/sys/dev/pci
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Author: jhb
Date: Tue Jul 12 13:28:39 2011
New Revision: 223952
URL: http://svn.freebsd.org/changeset/base/223952

Log:
  Properly align the end of a candidate back region based on the window's
  granularity when growing a PCI-PCI window up.
  
  Tested by:	dougb
  MFC after:	3 days

Modified:
  head/sys/dev/pci/pci_pci.c

Modified: head/sys/dev/pci/pci_pci.c
==============================================================================
--- head/sys/dev/pci/pci_pci.c	Tue Jul 12 13:22:17 2011	(r223951)
+++ head/sys/dev/pci/pci_pci.c	Tue Jul 12 13:28:39 2011	(r223952)
@@ -954,7 +954,7 @@ pcib_grow_window(struct pcib_softc *sc, 
 			if (bootverbose)
 				printf("\tback candidate range: %#lx-%#lx\n",
 				    start_free, back);
-			back = roundup2(back + 1, w->step) - 1;
+			back = roundup2(back + 1, 1ul << w->step) - 1;
 			back -= rman_get_end(w->res);
 		} else
 			back = 0;