From: Bernhard Walle <bwalle@suse.de>
Date: Wed, 14 Mar 2007 18:07:47 +0000 (+0100)
Subject: [IA64] Fix wrong /proc/iomem on SGI Altix
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=58a69c367c02a165004a5ce5dd55ce03b59ba43d;p=openwrt%2Fstaging%2Fblogic.git

[IA64] Fix wrong /proc/iomem on SGI Altix

In sn_io_slot_fixup(), the parent is re-set from the bus to
io(port|mem)_resource because the address is changed in a way that it's not
child of the bus any more.

However, only the root is set but not the parent/child/sibling relationship in
the resource tree which causes 'cat /proc/iomem' to stop after this memory
area. Depding on the poition in the tree the iomem may be nearly completely
empty.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Acked-by: John Keller <jpk@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---

diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 600be3ebae05..6b10e5d28488 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -247,10 +247,18 @@ sn_io_slot_fixup(struct pci_dev *dev)
 		addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
 		dev->resource[idx].start = addr;
 		dev->resource[idx].end = addr + size;
+
+		/*
+		 * if it's already in the device structure, remove it before
+		 * inserting
+		 */
+		if (dev->resource[idx].parent && dev->resource[idx].parent->child)
+			release_resource(&dev->resource[idx]);
+
 		if (dev->resource[idx].flags & IORESOURCE_IO)
-			dev->resource[idx].parent = &ioport_resource;
+			insert_resource(&ioport_resource, &dev->resource[idx]);
 		else
-			dev->resource[idx].parent = &iomem_resource;
+			insert_resource(&iomem_resource, &dev->resource[idx]);
 		/* If ROM, mark as shadowed in PROM */
 		if (idx == PCI_ROM_RESOURCE)
 			dev->resource[idx].flags |= IORESOURCE_ROM_BIOS_COPY;