i40e: avoid unnecessary register read

We don't need to read the base VF id. It's already stashed in the HW
struct.

Change-Id: Ib81e2f76fc40b12c966e014a856b481912cafefc
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 2c042a264db0fb5905f2c55341ebecb9ea076964..bed60220e6924ea313e728211f639a9df50adc67 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -600,8 +600,7 @@ static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
        int vf_abs_id, i;
        u32 reg;
 
-       reg = rd32(hw, I40E_PF_VT_PFALLOC);
-       vf_abs_id = vf->vf_id + (reg & I40E_PF_VT_PFALLOC_FIRSTVF_MASK);
+       vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
 
        wr32(hw, I40E_PF_PCI_CIAA,
             VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));