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Subject: [PATCH 5/8] net: sungem: use pci_status_get_and_clear_errors
From:   Heiner Kallweit <hkallweit1@gmail.com>
To:     Bjorn Helgaas <bhelgaas@google.com>,
        Realtek linux nic maintainers <nic_swsd@realtek.com>,
        David Miller <davem@davemloft.net>,
        Mirko Lindner <mlindner@marvell.com>,
        Stephen Hemminger <stephen@networkplumber.org>,
        Clemens Ladisch <clemens@ladisch.de>,
        Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>
Cc:     "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        alsa-devel@alsa-project.org
References: <5939f711-92aa-e7ed-2a26-4f1e4169f786@gmail.com>
Message-ID: <e88effc4-bd85-9734-533d-60e3d40d27f2@gmail.com>
Date:   Mon, 24 Feb 2020 22:26:35 +0100
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Use new helper pci_status_get_and_clear_errors() to simplify the code.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
 drivers/net/ethernet/sun/sungem.c | 30 +++++++++---------------------
 1 file changed, 9 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ethernet/sun/sungem.c b/drivers/net/ethernet/sun/sungem.c
index 8358064fb..2d392a7b1 100644
--- a/drivers/net/ethernet/sun/sungem.c
+++ b/drivers/net/ethernet/sun/sungem.c
@@ -545,37 +545,25 @@ static int gem_pci_interrupt(struct net_device *dev, struct gem *gp, u32 gem_sta
 	}
 
 	if (pci_estat & GREG_PCIESTAT_OTHER) {
-		u16 pci_cfg_stat;
+		int pci_errs;
 
 		/* Interrogate PCI config space for the
 		 * true cause.
 		 */
-		pci_read_config_word(gp->pdev, PCI_STATUS,
-				     &pci_cfg_stat);
-		netdev_err(dev, "Read PCI cfg space status [%04x]\n",
-			   pci_cfg_stat);
-		if (pci_cfg_stat & PCI_STATUS_PARITY)
+		pci_errs = pci_status_get_and_clear_errors(gp->pdev);
+		netdev_err(dev, "PCI status errors[%04x]\n", pci_errs);
+		if (pci_errs & PCI_STATUS_PARITY)
 			netdev_err(dev, "PCI parity error detected\n");
-		if (pci_cfg_stat & PCI_STATUS_SIG_TARGET_ABORT)
+		if (pci_errs & PCI_STATUS_SIG_TARGET_ABORT)
 			netdev_err(dev, "PCI target abort\n");
-		if (pci_cfg_stat & PCI_STATUS_REC_TARGET_ABORT)
+		if (pci_errs & PCI_STATUS_REC_TARGET_ABORT)
 			netdev_err(dev, "PCI master acks target abort\n");
-		if (pci_cfg_stat & PCI_STATUS_REC_MASTER_ABORT)
+		if (pci_errs & PCI_STATUS_REC_MASTER_ABORT)
 			netdev_err(dev, "PCI master abort\n");
-		if (pci_cfg_stat & PCI_STATUS_SIG_SYSTEM_ERROR)
+		if (pci_errs & PCI_STATUS_SIG_SYSTEM_ERROR)
 			netdev_err(dev, "PCI system error SERR#\n");
-		if (pci_cfg_stat & PCI_STATUS_DETECTED_PARITY)
+		if (pci_errs & PCI_STATUS_DETECTED_PARITY)
 			netdev_err(dev, "PCI parity error\n");
-
-		/* Write the error bits back to clear them. */
-		pci_cfg_stat &= (PCI_STATUS_PARITY |
-				 PCI_STATUS_SIG_TARGET_ABORT |
-				 PCI_STATUS_REC_TARGET_ABORT |
-				 PCI_STATUS_REC_MASTER_ABORT |
-				 PCI_STATUS_SIG_SYSTEM_ERROR |
-				 PCI_STATUS_DETECTED_PARITY);
-		pci_write_config_word(gp->pdev,
-				      PCI_STATUS, pci_cfg_stat);
 	}
 
 	/* For all PCI errors, we should reset the chip. */
-- 
2.25.1