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

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>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index ca6849a0121e..b6cb7a5e4b27 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -338,8 +338,7 @@ static int hid_submit_out(struct hid_device *hid)
         report = usbhid->out[usbhid->outtail].report;
         raw_report = usbhid->out[usbhid->outtail].raw_report;
 
-        usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) +
-                                                 1 + (report->id > 0);
+        usbhid->urbout->transfer_buffer_length = hid_report_len(report);
         usbhid->urbout->dev = hid_to_usb_dev(hid);
         if (raw_report) {
                 memcpy(usbhid->outbuf, raw_report,