Fixes the following W=1 kernel build warning(s):

 drivers/infiniband/hw/qib/qib_twsi.c:175: warning: Function parameter or member 'last' not described in 'rd_byte'

Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Cc: Mike Marciniszyn <redacted>
Cc: Doug Ledford <redacted>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Lee Jones <redacted>
---
 drivers/infiniband/hw/qib/qib_twsi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/hw/qib/qib_twsi.c b/drivers/infiniband/hw/qib/qib_twsi.c
index f5698664419b4..97b8a2bf5c696 100644
--- a/drivers/infiniband/hw/qib/qib_twsi.c
+++ b/drivers/infiniband/hw/qib/qib_twsi.c

@@ -168,6 +168,7 @@ static void stop_cmd(struct qib_devdata *dd);
 /**
  * rd_byte - read a byte, sending STOP on last, else ACK
  * @dd: the qlogic_ib device
+ * @last: identifies the last read
  *
  * Returns byte shifted out of device
  */

-- 
2.25.1