[net-next 12/14] i40e: use a local variable instead of calculating multiple times

[Jeff Kirsher]

From: Lihong Yang <lihong.y...@intel.com>

The computed result of I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES
is used more than three times in function i40e_config_irq_link_list.
Simply declare a local variable to store it to improve readability.

Signed-off-by: Lihong Yang <lihong.y...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c 
b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 125dcd1d2233..0c4fa225c7be 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -273,7 +273,7 @@ static void i40e_config_irq_link_list(struct i40e_vf *vf, 
u16 vsi_id,
        struct i40e_hw *hw = &pf->hw;
        u16 vsi_queue_id, pf_queue_id;
        enum i40e_queue_type qtype;
-       u16 next_q, vector_id;
+       u16 next_q, vector_id, size;
        u32 reg, reg_idx;
        u16 itr_idx = 0;
 
@@ -303,11 +303,9 @@ static void i40e_config_irq_link_list(struct i40e_vf *vf, 
u16 vsi_id,
                                     vsi_queue_id + 1));
        }
 
-       next_q = find_first_bit(&linklistmap,
-                               (I40E_MAX_VSI_QP *
-                                I40E_VIRTCHNL_SUPPORTED_QTYPES));
-       if (unlikely(next_q == (I40E_MAX_VSI_QP *
-                               I40E_VIRTCHNL_SUPPORTED_QTYPES)))
+       size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
+       next_q = find_first_bit(&linklistmap, size);
+       if (unlikely(next_q == size))
                goto irq_list_done;
 
        vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
@@ -317,7 +315,7 @@ static void i40e_config_irq_link_list(struct i40e_vf *vf, 
u16 vsi_id,
 
        wr32(hw, reg_idx, reg);
 
-       while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
+       while (next_q < size) {
                switch (qtype) {
                case I40E_QUEUE_TYPE_RX:
                        reg_idx = I40E_QINT_RQCTL(pf_queue_id);
@@ -331,12 +329,8 @@ static void i40e_config_irq_link_list(struct i40e_vf *vf, 
u16 vsi_id,
                        break;
                }
 
-               next_q = find_next_bit(&linklistmap,
-                                      (I40E_MAX_VSI_QP *
-                                       I40E_VIRTCHNL_SUPPORTED_QTYPES),
-                                      next_q + 1);
-               if (next_q <
-                   (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
+               next_q = find_next_bit(&linklistmap, size, next_q + 1);
+               if (next_q < size) {
                        vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
                        qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
                        pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id,
-- 
2.14.2