diff options
Diffstat (limited to 'include/linux/hid.h')
| -rw-r--r-- | include/linux/hid.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/hid.h b/include/linux/hid.h index 78ea9bf941cd..2366fda010c8 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -1063,6 +1063,17 @@ static inline void hid_hw_wait(struct hid_device *hdev) hdev->ll_driver->wait(hdev); } +/** + * hid_report_len - calculate the report length + * + * @report: the report we want to know the length + */ +static inline int hid_report_len(struct hid_report *report) +{ + /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */ + return ((report->size - 1) >> 3) + 1 + (report->id > 0); +} + int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, int interrupt); |