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/amd_bus.c b/arch/x86/pci/amd_bus.c
index f06bb1b..f7e13b6 100644
--- a/arch/x86/pci/amd_bus.c
+++ b/arch/x86/pci/amd_bus.c
@@ -201,7 +201,7 @@
memset(range, 0, sizeof(range));
/* 0xfd00000000-0xffffffffff for HT */
- range[0].end = (0xfdULL<<32) - 1;
+ range[0].end = cap_resource((0xfdULL<<32) - 1);
/* need to take out [0, TOM) for RAM*/
address = MSR_K8_TOP_MEM1;
@@ -286,7 +286,8 @@
}
}
- update_res(info, start, end, IORESOURCE_MEM, 1);
+ update_res(info, cap_resource(start), cap_resource(end),
+ IORESOURCE_MEM, 1);
subtract_range(range, RANGE_NUM, start, end);
printk(KERN_CONT "\n");
}
@@ -321,7 +322,8 @@
if (!range[i].end)
continue;
- update_res(info, range[i].start, range[i].end,
+ update_res(info, cap_resource(range[i].start),
+ cap_resource(range[i].end),
IORESOURCE_MEM, 1);
}
}