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DateThu, 22 Nov 2001 15:04:18 +0300
FromIvan Kokshaysky <>
Subject[patch non-x86] PCI-PCI bridges fix
Bridge resources weren't added to the resource tree. This was
harmless for most real-life configurations (especially on Alpha),
but certainly it will be a problem with the hotplug stuff
(thinking of ES45).

Ivan.

--- 2.4.15p9/drivers/pci/setup-bus.c	Fri Oct  5 05:47:08 2001
+++ linux/drivers/pci/setup-bus.c	Wed Nov 21 20:16:24 2001
@@ -201,6 +201,16 @@ pbus_assign_resources(struct pci_bus *bu
 		b->resource[0]->end = ranges->io_end - 1;
 		b->resource[1]->end = ranges->mem_end - 1;
 
+		/* Add bridge resources to the resource tree. */
+		if (b->resource[0]->end > b->resource[0]->start &&
+		    request_resource(bus->resource[0], b->resource[0]) < 0)
+			printk(KERN_ERR "PCI: failed to reserve IO "
+					"for bus %d\n",	b->number);
+		if (b->resource[1]->end > b->resource[1]->start &&
+		    request_resource(bus->resource[1], b->resource[1]) < 0)
+			printk(KERN_ERR "PCI: failed to reserve MEM "
+					"for bus %d\n", b->number);
+
 		pci_setup_bridge(b);
 	}
 }
-
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