IB/hfi1: Fix pio wait counter double increment

The code unconditionlly increments the pio wait counter
making the counter inacurate and unusable.

Fixes: 14553ca11039 ("staging/rdma/hfi1: Adaptive PIO for short messages")
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/staging/rdma/hfi1/verbs.c b/drivers/staging/rdma/hfi1/verbs.c
index 9cdc85f..f3531fd 100644 (file)
--- a/drivers/staging/rdma/hfi1/verbs.c
+++ b/drivers/staging/rdma/hfi1/verbs.c
@@ -946,7 +946,6 @@ static int pio_wait(struct rvt_qp *qp,
 
                        dev->n_piowait += !!(flag & RVT_S_WAIT_PIO);
                        dev->n_piodrain += !!(flag & RVT_S_WAIT_PIO_DRAIN);
-                       dev->n_piowait++;
                        qp->s_flags |= flag;
                        was_empty = list_empty(&sc->piowait);
                        list_add_tail(&priv->s_iowait.list, &sc->piowait);