linux-kernel - [PATCH 4/4] i40e: use PCI VFs assignment helper function simplify i40e_vfs_are

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Date:	Fri, 11 Jul 2014 08:47:22 +0800
From:	Ethan Zhao <ethan.zhao@...cle.com>
To:	bhelgaas@...gle.com, konrad.wilk@...cle.com,
	boris.ostrovsky@...cle.com, david.vrabel@...rix.com,
	gleb@...nel.org, pbonzini@...hat.com, jeffrey.t.kirsher@...el.com,
	jesse.brandeburg@...el.com, bruce.w.allan@...el.com,
	carolyn.wyborny@...el.com, donald.c.skidmore@...el.com,
	gregory.v.rose@...el.com, alexander.h.duyck@...el.com,
	john.ronciak@...el.com, mitch.a.williams@...el.com
Cc:	linux-pci@...r.kernel.org, kvm@...r.kernel.org,
	linux.nics@...el.com, e1000-devel@...ts.sourceforge.net,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	ethan.kernel@...il.com, vaughan.cao@...cle.com,
	Ethan Zhao <ethan.zhao@...cle.com>
Subject: [PATCH 4/4] i40e: use PCI VFs assignment helper function simplify i40e_vfs_are_assigned()

New VFs reference counter mechanism and VFs assignment helper functions are introduced to
PCI SRIOV, use them instead of manipulating device flag directly.

Signed-off-by: Ethan Zhao <ethan.zhao@...cle.com>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |   17 ++---------------
 1 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 02c11a7..781040e 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -693,22 +693,9 @@ complete_reset:
 static bool i40e_vfs_are_assigned(struct i40e_pf *pf)
 {
 	struct pci_dev *pdev = pf->pdev;
-	struct pci_dev *vfdev;
-
-	/* loop through all the VFs to see if we own any that are assigned */
-	vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, I40E_DEV_ID_VF , NULL);
-	while (vfdev) {
-		/* if we don't own it we don't care */
-		if (vfdev->is_virtfn && pci_physfn(vfdev) == pdev) {
-			/* if it is assigned we cannot release it */
-			if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
-				return true;
-		}
 
-		vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
-				       I40E_DEV_ID_VF,
-				       vfdev);
-	}
+	if (pci_vfs_assigned(pdev))
+		return true;
 
 	return false;
 }
-- 
1.7.1

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