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| author | Jiri Kosina <jkosina@suse.cz> | 2010-01-05 11:45:52 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2010-01-05 11:45:52 +0100 |
| commit | 722612cd51cf1b574c89dff57cc5dbedf1f645bb (patch) | |
| tree | 4e72c3af6430ed32048d158239ad714d750adf7f /drivers/hid/hid-core.c | |
| parent | cf2f765f1896064e34c6f0f2ef896ff058dd5c06 (diff) | |
| download | linux-722612cd51cf1b574c89dff57cc5dbedf1f645bb.tar.bz2 | |
HID: fix parsing of local delimiter with size 0
Acording to HID standard 1.11, value 0 allows for size being 0.
Local delimiter tag has has 0 one of the possible values.
Therefore we need to handle this case properly, to be fully compliant
with the specification.
Reported-by: Marcin Tolysz <tolysz@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-core.c')
| -rw-r--r-- | drivers/hid/hid-core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 6462c923805f..a4b496c68259 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -387,7 +387,8 @@ static int hid_parser_local(struct hid_parser *parser, struct hid_item *item) __u32 data; unsigned n; - if (item->size == 0) { + /* Local delimiter could have value 0, which allows size to be 0 */ + if (item->size == 0 && item->tag != HID_LOCAL_ITEM_TAG_DELIMITER) { dbg_hid("item data expected for local item\n"); return -1; } |