From: Avinash Dayanand Date: Wed, 27 Jul 2016 19:02:36 +0000 (-0700) Subject: i40e: Force register writes to mitigate sync issues with iwarp VF driver X-Git-Tag: v4.9-rc1~14^2~86^2~7 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=70df973b5eb48b19ba29105ecfecb3e50efe3c6d;p=linux.git i40e: Force register writes to mitigate sync issues with iwarp VF driver 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. Change-ID: I60c6a2c709da89e845f2764cc50ce8b7373c8c44 Signed-off-by: Avinash Dayanand Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c index 8726269188f3..90b435cd77ec 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_client.c +++ b/drivers/net/ethernet/intel/i40e/i40e_client.c @@ -793,7 +793,8 @@ 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);