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i40e: remove redundant AQ enable 

The admin queue length register is updated in
config_a<sq|rq>_regs functions.  We should not update it again,
as we will trigger firmware to init the AQ again. In this case
firmware will lose the information about the AQ Rx tail position
and will see Rx queue as full (no free desc for FW to use).

Signed-off-by: Kamil Krawczyk <kamil.krawczyk@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Kamil Krawczyk 2013-12-18 13:45:46 +00:00 committed by Jeff Kirsher
parent c354229fc0
commit 071b8de982
1 changed files with 0 additions and 6 deletions
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6
drivers/net/ethernet/intel/i40e/i40e_adminq.c
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@ -957,20 +957,14 @@ clean_arq_element_out:
static void i40e_resume_aq(struct i40e_hw *hw)
{
u32 reg = 0;
/* Registers are reset after PF reset */
hw->aq.asq.next_to_use = 0;
hw->aq.asq.next_to_clean = 0;
i40e_config_asq_regs(hw);
reg = hw->aq.num_asq_entries | I40E_PF_ATQLEN_ATQENABLE_MASK;
wr32(hw, hw->aq.asq.len, reg);
hw->aq.arq.next_to_use = 0;
hw->aq.arq.next_to_clean = 0;
i40e_config_arq_regs(hw);
reg = hw->aq.num_arq_entries | I40E_PF_ATQLEN_ATQENABLE_MASK;
wr32(hw, hw->aq.arq.len, reg);
}