[RFC PATCH net-next 4/5] net: wangxun: extract the close_suspend sequence

[Jiawen Wu <jiawenwu@trustnetic.com>]

Refactor the .ndo_close implementation by extracting the necessary
hardware shutdown sequence into a dedicated close_suspend function.

This is for later implementation of PCIe error callback function in
libwx.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_type.h   |  1 +
 drivers/net/ethernet/wangxun/ngbe/ngbe_main.c  | 18 +++++++++++++-----
 drivers/net/ethernet/wangxun/ngbe/ngbe_type.h  |  1 +
 .../net/ethernet/wangxun/txgbe/txgbe_main.c    | 13 +++++++------
 .../net/ethernet/wangxun/txgbe/txgbe_type.h    |  1 +
 5 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 671ac0a19dee..4b72835ddec1 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -1403,6 +1403,7 @@ struct wx {
 	void (*configure_fdir)(struct wx *wx);
 	int (*setup_tc)(struct net_device *netdev, u8 tc);
 	void (*do_reset)(struct net_device *netdev, bool reinit);
+	void (*close_suspend)(struct wx *wx);
 	int (*ptp_setup_sdp)(struct wx *wx);
 	void (*set_num_queues)(struct wx *wx);
 
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
index ec14dd47cd42..bd6c0c9c51ba 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
@@ -135,6 +135,7 @@ static int ngbe_sw_init(struct wx *wx)
 	wx->mbx.size = WX_VXMAILBOX_SIZE;
 	wx->setup_tc = ngbe_setup_tc;
 	wx->do_reset = ngbe_do_reset;
+	wx->close_suspend = ngbe_close_suspend;
 	set_bit(0, &wx->fwd_bitmask);
 
 	return 0;
@@ -510,6 +511,16 @@ void ngbe_up(struct wx *wx)
 	ngbe_up_complete(wx);
 }
 
+void ngbe_close_suspend(struct wx *wx)
+{
+	wx_ptp_suspend(wx);
+	ngbe_down(wx);
+	wx_free_irq(wx);
+	wx_free_isb_resources(wx);
+	wx_free_resources(wx);
+	phylink_disconnect_phy(wx->phylink);
+}
+
 /**
  * ngbe_close - Disables a network interface
  * @netdev: network interface device structure
@@ -526,11 +537,8 @@ static int ngbe_close(struct net_device *netdev)
 	struct wx *wx = netdev_priv(netdev);
 
 	wx_ptp_stop(wx);
-	ngbe_down(wx);
-	wx_free_irq(wx);
-	wx_free_isb_resources(wx);
-	wx_free_resources(wx);
-	phylink_disconnect_phy(wx->phylink);
+	if (netif_device_present(netdev))
+		ngbe_close_suspend(wx);
 	wx_control_hw(wx, false);
 
 	return 0;
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h b/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
index c9233dc7ae50..eb5c92edae06 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
@@ -126,5 +126,6 @@ void ngbe_down(struct wx *wx);
 void ngbe_up(struct wx *wx);
 int ngbe_setup_tc(struct net_device *dev, u8 tc);
 void ngbe_do_reset(struct net_device *netdev, bool reinit);
+void ngbe_close_suspend(struct wx *wx);
 
 #endif /* _NGBE_TYPE_H_ */
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index f6050775af71..20969dd7d47a 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -415,6 +415,7 @@ static int txgbe_sw_init(struct wx *wx)
 
 	wx->setup_tc = txgbe_setup_tc;
 	wx->do_reset = txgbe_do_reset;
+	wx->close_suspend = txgbe_close_suspend;
 	set_bit(0, &wx->fwd_bitmask);
 
 	switch (wx->mac.type) {
@@ -503,10 +504,12 @@ static int txgbe_open(struct net_device *netdev)
  * This function should contain the necessary work common to both suspending
  * and closing of the device.
  */
-static void txgbe_close_suspend(struct wx *wx)
+void txgbe_close_suspend(struct wx *wx)
 {
 	wx_ptp_suspend(wx);
-	txgbe_disable_device(wx);
+	txgbe_down(wx);
+	wx_free_irq(wx);
+	txgbe_free_misc_irq(wx->priv);
 	wx_free_resources(wx);
 }
 
@@ -526,10 +529,8 @@ static int txgbe_close(struct net_device *netdev)
 	struct wx *wx = netdev_priv(netdev);
 
 	wx_ptp_stop(wx);
-	txgbe_down(wx);
-	wx_free_irq(wx);
-	txgbe_free_misc_irq(wx->priv);
-	wx_free_resources(wx);
+	if (netif_device_present(netdev))
+		txgbe_close_suspend(wx);
 	txgbe_fdir_filter_exit(wx);
 	wx_control_hw(wx, false);
 
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
index 1e373f7fd9b5..cd50ff1ef2ed 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
@@ -314,6 +314,7 @@ void txgbe_down(struct wx *wx);
 void txgbe_up(struct wx *wx);
 int txgbe_setup_tc(struct net_device *dev, u8 tc);
 void txgbe_do_reset(struct net_device *netdev, bool reinit);
+void txgbe_close_suspend(struct wx *wx);
 
 #define TXGBE_LINK_SPEED_UNKNOWN        0
 #define TXGBE_LINK_SPEED_10GB_FULL      4
-- 
2.51.0