From: Anjali Singhai Jain <anjali.singhai@intel.com>
Date: Tue, 7 Apr 2015 23:45:35 +0000 (-0400)
Subject: i40e: For VF reset (VFR and VFLR) add some more delay
X-Git-Tag: v5.15~15945^2~24^2~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=57175ac1987bf770122f6fe5056fe73269add00f;p=platform%2Fkernel%2Flinux-starfive.git

i40e: For VF reset (VFR and VFLR) add some more delay

With a HW issue that was recently discovered, after a VFLR HW might be
indicating to us a reset completion little too early. So wait another 10
msec for cache to be cleaned up.

Change-ID: I6a24dcf5dd7ffcd6500246e717411ef58532d1e9
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Jim Young <james.m.young@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 98e0921..78d1c4f 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -812,6 +812,9 @@ void i40e_reset_vf(struct i40e_vf *vf, bool flr)
 		}
 	}
 
+	if (flr)
+		usleep_range(10000, 20000);
+
 	if (!rsd)
 		dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
 			vf->vf_id);