[Intel-wired-lan] [next PATCH S40-V2 07/12] i40e: Force register writes to mitigate sync issues with iwarp VF driver

[Bimmy Pujari]

From: Avinash Dayanand <avinash.dayanand at intel.com>

This patch is a fix for the bug i.e. unable to create iwarp device
in VF. This is a sync issue and the iwarp device open is called even
before the PCI register writes are done.

Forcing the PCI register writes to happen just before it exits the
function.

Signed-off-by: Avinash Dayanand <avinash.dayanand at intel.com>
Change-ID: I60c6a2c709da89e845f2764cc50ce8b7373c8c44
---
 drivers/net/ethernet/intel/i40e/i40e_client.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c
index e14f041..701876c 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_client.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_client.c
@@ -794,7 +794,8 @@ static int i40e_client_setup_qvlist(struct i40e_info *ldev,
 			wr32(hw, I40E_PFINT_AEQCTL, reg);
 		}
 	}
-
+	/* Mitigate sync problems with iwarp VF driver */
+	i40e_flush(hw);
 	return 0;
 err:
 	kfree(ldev->qvlist_info);
-- 
2.4.11