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| author | Benjamin Tissoires <benjamin.tissoires@gmail.com> | 2012-11-14 16:59:15 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2012-11-15 10:07:55 +0100 |
| commit | 774638386826621c984ab6994439f474709cac5e (patch) | |
| tree | 897fb8a15947768f7dc9521027c7c20fe830c1bf /include/linux/hid.h | |
| parent | ccdd699411b77c463022ebac311eb4a06ca56db4 (diff) | |
| download | lwn-774638386826621c984ab6994439f474709cac5e.tar.gz lwn-774638386826621c984ab6994439f474709cac5e.zip | |
HID: fix unit exponent parsing
HID spec details special values for the HID field unit exponent.
Basically, the range [0x8..0xf] correspond to [-8..-1], so this is
a standard two's complement on a half-byte.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'include/linux/hid.h')
| -rw-r--r-- | include/linux/hid.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/hid.h b/include/linux/hid.h index c6bef8f54a82..4161bf2c0b5b 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -717,6 +717,7 @@ int hid_connect(struct hid_device *hid, unsigned int connect_mask); void hid_disconnect(struct hid_device *hid); const struct hid_device_id *hid_match_id(struct hid_device *hdev, const struct hid_device_id *id); +s32 hid_snto32(__u32 value, unsigned n); /** * hid_map_usage - map usage input bits |