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HID: make hid_report_len as a static inline function in hid.h

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In several hid drivers it is necessary to calculate the length of an
hid_report. This patch exports the existing static function hid_report_len of
hid-core.c as an inline function in hid.h

Signed-off-by: Mathieu Magnaudet <mathieu.magnaudet@enac.fr>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Mathieu Magnaudet 2014-11-27 16:02:36 +01:00 • committed by Jiri Kosina
parent da10bc2524
commit dabb05c667
6 changed files with 15 additions and 17 deletions
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11
include/linux/hid.h
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@ -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);