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From: Adrian Chadd <adrian@FreeBSD.org>
Date: Tue, 31 Jul 2012 18:47:17 +0000 (UTC)
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Subject: svn commit: r238954 - head/sys/dev/pccbb
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Author: adrian
Date: Tue Jul 31 18:47:17 2012
New Revision: 238954
URL: http://svn.freebsd.org/changeset/base/238954

Log:
  Restore the PCI bridge configuration upon resume.
  
  This allows my TI1510 cardbus/PCI bridge to work after a suspend/resume,
  without having to unload/reload the cbb driver.
  
  I've also tested this on stable/9.  I'll MFC it shortly.
  
  PR:		kern/170058
  Reviewed by:	jhb
  MFC after:	1 day

Modified:
  head/sys/dev/pccbb/pccbb_pci.c

Modified: head/sys/dev/pccbb/pccbb_pci.c
==============================================================================
--- head/sys/dev/pccbb/pccbb_pci.c	Tue Jul 31 18:44:10 2012	(r238953)
+++ head/sys/dev/pccbb/pccbb_pci.c	Tue Jul 31 18:47:17 2012	(r238954)
@@ -465,6 +465,11 @@ cbb_chipinit(struct cbb_softc *sc)
 	if (pci_read_config(sc->dev, PCIR_LATTIMER, 1) < 0x20)
 		pci_write_config(sc->dev, PCIR_LATTIMER, 0x20, 1);
 
+	/* Restore bus configuration */
+	pci_write_config(sc->dev, PCIR_PRIBUS_2, sc->pribus, 1);
+	pci_write_config(sc->dev, PCIR_SECBUS_2, sc->secbus, 1);
+	pci_write_config(sc->dev, PCIR_SUBBUS_2, sc->subbus, 1);
+
 	/* Enable memory access */
 	PCI_MASK_CONFIG(sc->dev, PCIR_COMMAND,
 	    | PCIM_CMD_MEMEN