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fm10k: use actual hardware registers when checking for pending Tx

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Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller 2016-06-07 16:08:49 -07:00 committed by Jeff Kirsher
parent 892c9e0872
commit 34bad71c7c
1 changed files with 5 additions and 3 deletions
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8
drivers/net/ethernet/intel/fm10k/fm10k_main.c
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@ -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;
}