commit b141d6196c748796993890f461dd83c9657ee616
author Mitch Williams <mitch.a.williams@intel.com> Thu Nov 28 06:39:36 2013 +0000
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> Mon Jan 06 02:06:51 2014 -0800
tree 68c7df9dede04826024d0fd2765d8ec81cf241d3
parent 1b60f3c41654a8f102daa5686a5a1bfe769393f7

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>

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 2c042a26..bed6022 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -600,8 +600,7 @@
 	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));