linux-kernel - [PATCH 3/3] PCI/AER: Use pci_aer_raw_clear_status() to clear root port's AER error status

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Message-Id: <20220901181634.99591-4-chenzhuo.1@bytedance.com>
Date:   Fri,  2 Sep 2022 02:16:34 +0800
From:   Zhuo Chen <chenzhuo.1@...edance.com>
To:     fancer.lancer@...il.com, jdmason@...zu.us, dave.jiang@...el.com,
        allenbh@...il.com, bhelgaas@...gle.com, ruscur@...sell.cc,
        oohall@...il.com, james.smart@...adcom.com,
        dick.kennedy@...adcom.com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com
Cc:     chenzhuo.1@...edance.com, ntb@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-scsi@...r.kernel.org
Subject: [PATCH 3/3] PCI/AER: Use pci_aer_raw_clear_status() to clear root port's AER error status

Statements clearing AER error status in aer_enable_rootport() has the
same function as pci_aer_raw_clear_status(). So we replace them, which
has no functional changes.

Signed-off-by: Zhuo Chen <chenzhuo.1@...edance.com>
---
 drivers/pci/pcie/aer.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index d2996afa80f6..eb0193f279f2 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -1287,12 +1287,7 @@ static void aer_enable_rootport(struct aer_rpc *rpc)
 				   SYSTEM_ERROR_INTR_ON_MESG_MASK);
 
 	/* Clear error status */
-	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_STATUS, &reg32);
-	pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_STATUS, reg32);
-	pci_read_config_dword(pdev, aer + PCI_ERR_COR_STATUS, &reg32);
-	pci_write_config_dword(pdev, aer + PCI_ERR_COR_STATUS, reg32);
-	pci_read_config_dword(pdev, aer + PCI_ERR_UNCOR_STATUS, &reg32);
-	pci_write_config_dword(pdev, aer + PCI_ERR_UNCOR_STATUS, reg32);
+	pci_aer_raw_clear_status(pdev);
 
 	/*
 	 * Enable error reporting for the root port device and downstream port
-- 
2.30.1 (Apple Git-130)