[-v3,3/3] pci: don't allocate from a BUSY bus resource

Commit Message

Yinghai April 13, 2010, 9:24 p.m. UTC

None

Patch

Index: linux-2.6/drivers/pci/bus.c
===================================================================
--- linux-2.6.orig/drivers/pci/bus.c
+++ linux-2.6/drivers/pci/bus.c
@@ -103,6 +103,10 @@  pci_bus_alloc_resource(struct pci_bus *b
 		if (!r)
 			continue;
 
+		/* Driver can not reserve it later, so don't use it */
+		if (r->flags & IORESOURCE_BUSY)
+			continue;
+
 		/* type_mask must match */
 		if ((res->flags ^ r->flags) & type_mask)
 			continue;