From 34bad71c7c25840cd78dff12d75497d3aab5544d Mon Sep 17 00:00:00 2001 From: Jacob Keller Date: Tue, 7 Jun 2016 16:08:49 -0700 Subject: [PATCH] fm10k: use actual hardware registers when checking for pending Tx Signed-off-by: Jacob Keller Tested-by: Krishneil Singh Signed-off-by: Jeff Kirsher --- 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 a9ccc1eb3ea4..c6a464551577 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; } -- 2.20.1