diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2010-02-10 01:20:11 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-02-10 17:47:17 -0800 |
| commit | 9ad3f2c7c69659c343843393944d739fec1f2e73 (patch) | |
| tree | b1eef2d30a70d8386c3fdfe8bd73cf15de657f8c /include/linux/range.h | |
| parent | 97445c3b86e0b64e059b4829a7193f8e26fb5bfc (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.h | 8 |
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 |