diff options
Diffstat (limited to 'include/linux/hid.h')
| -rw-r--r-- | include/linux/hid.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/hid.h b/include/linux/hid.h index 7f260e0e2049..2cc4f1e4ea96 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -1216,7 +1216,11 @@ static inline void hid_hw_wait(struct hid_device *hdev) /** * hid_report_len - calculate the report length * - * @report: the report we want to know the length + * @report: the report whose length we want to know + * + * The length counts the report ID byte, but only if the ID is nonzero + * and therefore is included in the report. Reports whose ID is zero + * never include an ID byte. */ static inline u32 hid_report_len(struct hid_report *report) { |