netdev - [PATCH 3/8] r8169: use pci_status_get_and_clear

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Date:   Mon, 24 Feb 2020 22:24:50 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Realtek linux nic maintainers <nic_swsd@...ltek.com>,
        David Miller <davem@...emloft.net>
Cc:     "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH 3/8] r8169: use pci_status_get_and_clear_errors

Use new helper pci_status_get_and_clear_errors() to simplify the code.

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/ethernet/realtek/r8169_main.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index f081007a2..4495a3cf9 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -4357,13 +4357,15 @@ static void rtl8169_pcierr_interrupt(struct net_device *dev)
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
 	struct pci_dev *pdev = tp->pci_dev;
-	u16 pci_status, pci_cmd;
+	int pci_status_errs;
+	u16 pci_cmd;
 
 	pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
-	pci_read_config_word(pdev, PCI_STATUS, &pci_status);
 
-	netif_err(tp, intr, dev, "PCI error (cmd = 0x%04x, status = 0x%04x)\n",
-		  pci_cmd, pci_status);
+	pci_status_errs = pci_status_get_and_clear_errors(pdev);
+
+	netif_err(tp, intr, dev, "PCI error (cmd = 0x%04x, status_errs = 0x%04x)\n",
+		  pci_cmd, pci_status_errs);
 
 	/*
 	 * The recovery sequence below admits a very elaborated explanation:
@@ -4380,11 +4382,6 @@ static void rtl8169_pcierr_interrupt(struct net_device *dev)
 
 	pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
 
-	pci_write_config_word(pdev, PCI_STATUS,
-		pci_status & (PCI_STATUS_DETECTED_PARITY |
-		PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
-		PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
-
 	rtl_schedule_task(tp, RTL_FLAG_TASK_RESET_PENDING);
 }
 
-- 
2.25.1