netdev - [PATCH RFC 06/18] r8168: remove function rtl8169_rx_missed() being specific to MAC version 01

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Date:   Thu, 21 Dec 2017 21:50:19 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Realtek linux nic maintainers <nic_swsd@...ltek.com>,
        Chun-Hao Lin <hau@...ltek.com>
Cc:     David Miller <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH RFC 06/18] r8168: remove function rtl8169_rx_missed() being
 specific to MAC version 01 - 06

Function rtl8169_rx_missed() does nothing on MAC versions > 06,
therefore remove it.

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/ethernet/realtek/r8168.c | 23 -----------------------
 1 file changed, 23 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8168.c b/drivers/net/ethernet/realtek/r8168.c
index 0ce789814..0ba0ac5ec 100644
--- a/drivers/net/ethernet/realtek/r8168.c
+++ b/drivers/net/ethernet/realtek/r8168.c
@@ -7401,21 +7401,9 @@ static int rtl8169_poll(struct napi_struct *napi, int budget)
 	return work_done;
 }
 
-static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
-{
-	struct rtl8169_private *tp = netdev_priv(dev);
-
-	if (tp->mac_version > RTL_GIGA_MAC_VER_06)
-		return;
-
-	dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
-	RTL_W32(RxMissed, 0);
-}
-
 static void rtl8169_down(struct net_device *dev)
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
-	void __iomem *ioaddr = tp->mmio_addr;
 
 	del_timer_sync(&tp->timer);
 
@@ -7423,12 +7411,6 @@ static void rtl8169_down(struct net_device *dev)
 	netif_stop_queue(dev);
 
 	rtl8169_hw_reset(tp);
-	/*
-	 * At this point device interrupts can not be enabled in any function,
-	 * as netif_running is not true (rtl8169_interrupt, rtl8169_reset_task)
-	 * and napi is disabled (rtl8169_poll).
-	 */
-	rtl8169_rx_missed(dev, ioaddr);
 
 	/* Give a racing hard_start_xmit a few cycles to complete. */
 	synchronize_sched();
@@ -7568,16 +7550,12 @@ static void
 rtl8169_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
-	void __iomem *ioaddr = tp->mmio_addr;
 	struct pci_dev *pdev = tp->pci_dev;
 	struct rtl8169_counters *counters = tp->counters;
 	unsigned int start;
 
 	pm_runtime_get_noresume(&pdev->dev);
 
-	if (netif_running(dev) && pm_runtime_active(&pdev->dev))
-		rtl8169_rx_missed(dev, ioaddr);
-
 	do {
 		start = u64_stats_fetch_begin_irq(&tp->rx_stats.syncp);
 		stats->rx_packets = tp->rx_stats.packets;
@@ -7697,7 +7675,6 @@ static int rtl8169_runtime_suspend(struct device *device)
 	rtl8169_net_suspend(dev);
 
 	/* Update counters before going runtime suspend */
-	rtl8169_rx_missed(dev, tp->mmio_addr);
 	rtl8169_update_counters(dev);
 
 	return 0;
-- 
2.15.1