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authorYinghai Lu <yinghai@kernel.org>2010-02-10 01:20:11 -0800
committerH. Peter Anvin <hpa@zytor.com>2010-02-10 17:47:17 -0800
commit9ad3f2c7c69659c343843393944d739fec1f2e73 (patch)
treeb1eef2d30a70d8386c3fdfe8bd73cf15de657f8c /include/linux/range.h
parent97445c3b86e0b64e059b4829a7193f8e26fb5bfc (diff)
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>
Diffstat (limited to 'include/linux/range.h')
-rw-r--r--include/linux/range.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/range.h b/include/linux/range.h
index 0789f1412e1f..bd184a5db791 100644
--- a/include/linux/range.h
+++ b/include/linux/range.h
@@ -19,4 +19,12 @@ int clean_sort_range(struct range *range, int az);
void sort_range(struct range *range, int nr_range);
+#define MAX_RESOURCE ((resource_size_t)~0)
+static inline resource_size_t cap_resource(u64 val)
+{
+ if (val > MAX_RESOURCE)
+ return MAX_RESOURCE;
+
+ return val;
+}
#endif