[net-next 07/20] fm10k: use actual hardware registers when checking for pending Tx

[Jeff Kirsher]

From: Jacob Keller <jacob.e.kel...@intel.com>

Signed-off-by: Jacob Keller <jacob.e.kel...@intel.com>
Tested-by: Krishneil Singh <krishneil.k.si...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/fm10k/fm10k_main.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_main.c 
b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
index a9ccc1e..c6a4645 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_main.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
@@ -1130,9 +1130,11 @@ static u64 fm10k_get_tx_completed(struct fm10k_ring 
*ring)
 
 static u64 fm10k_get_tx_pending(struct fm10k_ring *ring)
 {
-       /* use SW head and tail until we have real hardware */
-       u32 head = ring->next_to_clean;
-       u32 tail = ring->next_to_use;
+       struct fm10k_intfc *interface = ring->q_vector->interface;
+       struct fm10k_hw *hw = &interface->hw;
+
+       u32 head = fm10k_read_reg(hw, FM10K_TDH(ring->reg_idx));
+       u32 tail = fm10k_read_reg(hw, FM10K_TDT(ring->reg_idx));
 
        return ((head <= tail) ? tail : tail + ring->count) - head;
 }
-- 
2.5.5