x86/pci: Add cap_resource()
Prepare for 32bit pci root bus
-v2: hpa said we should compare with (resource_size_t)~0
-v3: according to Linus to use MAX_RESOURCE instead.
also need need to put related patches together
-v4: according to Andrew, use min in cap_resource()
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-8-git-send-email-yinghai@kernel.org>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/pci/bus_numa.c b/arch/x86/pci/bus_numa.c
index 3411687..3510778 100644
--- a/arch/x86/pci/bus_numa.c
+++ b/arch/x86/pci/bus_numa.c
@@ -1,5 +1,6 @@
#include <linux/init.h>
#include <linux/pci.h>
+#include <linux/range.h>
#include "bus_numa.h"
@@ -55,6 +56,9 @@
if (start > end)
return;
+ if (start == MAX_RESOURCE)
+ return;
+
if (!merge)
goto addit;