linux-kernel - [PATCH 5.15 228/262] iavf: Add helper function to go from pci

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Message-Id: <20220307091709.615594279@linuxfoundation.org>
Date:   Mon,  7 Mar 2022 10:19:32 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Brett Creeley <brett.creeley@...el.com>,
        Karen Sornek <karen.sornek@...el.com>,
        Konrad Jankowski <konrad0.jankowski@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 228/262] iavf: Add helper function to go from pci_dev to adapter

From: Karen Sornek <karen.sornek@...el.com>

[ Upstream commit 247aa001b72b6c8a89df9d108a2ec6f274a6b64d ]

Add helper function to go from pci_dev to adapter to make work simple -
to go from a pci_dev to the adapter structure and make netdev assignment
instead of having to go to the net_device then the adapter.

Signed-off-by: Brett Creeley <brett.creeley@...el.com>
Signed-off-by: Karen Sornek <karen.sornek@...el.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/intel/iavf/iavf_main.c | 24 +++++++++++++++------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index 3aa21568686d..33a3dbcf8f2d 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -51,6 +51,15 @@ MODULE_LICENSE("GPL v2");
 static const struct net_device_ops iavf_netdev_ops;
 struct workqueue_struct *iavf_wq;
 
+/**
+ * iavf_pdev_to_adapter - go from pci_dev to adapter
+ * @pdev: pci_dev pointer
+ */
+static struct iavf_adapter *iavf_pdev_to_adapter(struct pci_dev *pdev)
+{
+	return netdev_priv(pci_get_drvdata(pdev));
+}
+
 /**
  * iavf_allocate_dma_mem_d - OS specific memory alloc for shared code
  * @hw:   pointer to the HW structure
@@ -3739,8 +3748,8 @@ int iavf_process_config(struct iavf_adapter *adapter)
  **/
 static void iavf_shutdown(struct pci_dev *pdev)
 {
-	struct net_device *netdev = pci_get_drvdata(pdev);
-	struct iavf_adapter *adapter = netdev_priv(netdev);
+	struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev);
+	struct net_device *netdev = adapter->netdev;
 
 	netif_device_detach(netdev);
 
@@ -3923,10 +3932,11 @@ static int __maybe_unused iavf_suspend(struct device *dev_d)
 static int __maybe_unused iavf_resume(struct device *dev_d)
 {
 	struct pci_dev *pdev = to_pci_dev(dev_d);
-	struct net_device *netdev = pci_get_drvdata(pdev);
-	struct iavf_adapter *adapter = netdev_priv(netdev);
+	struct iavf_adapter *adapter;
 	u32 err;
 
+	adapter = iavf_pdev_to_adapter(pdev);
+
 	pci_set_master(pdev);
 
 	rtnl_lock();
@@ -3945,7 +3955,7 @@ static int __maybe_unused iavf_resume(struct device *dev_d)
 
 	queue_work(iavf_wq, &adapter->reset_task);
 
-	netif_device_attach(netdev);
+	netif_device_attach(adapter->netdev);
 
 	return err;
 }
@@ -3961,8 +3971,8 @@ static int __maybe_unused iavf_resume(struct device *dev_d)
  **/
 static void iavf_remove(struct pci_dev *pdev)
 {
-	struct net_device *netdev = pci_get_drvdata(pdev);
-	struct iavf_adapter *adapter = netdev_priv(netdev);
+	struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev);
+	struct net_device *netdev = adapter->netdev;
 	struct iavf_fdir_fltr *fdir, *fdirtmp;
 	struct iavf_vlan_filter *vlf, *vlftmp;
 	struct iavf_adv_rss *rss, *rsstmp;
-- 
2.34.1