linux-kernel - [PATCH v2 8/9] PCI/ERR: Clear fatal status when pci_channel_io

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Message-Id: <20220927153524.49172-9-chenzhuo.1@bytedance.com>
Date:   Tue, 27 Sep 2022 23:35:23 +0800
From:   Zhuo Chen <chenzhuo.1@...edance.com>
To:     bhelgaas@...gle.com, ruscur@...sell.cc, oohall@...il.com,
        fancer.lancer@...il.com, jdmason@...zu.us, dave.jiang@...el.com,
        allenbh@...il.com, james.smart@...adcom.com,
        dick.kennedy@...adcom.com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com
Cc:     chenzhuo.1@...edance.com, linuxppc-dev@...ts.ozlabs.org,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        ntb@...ts.linux.dev, linux-scsi@...r.kernel.org
Subject: [PATCH v2 8/9] PCI/ERR: Clear fatal status when pci_channel_io_frozen

When state is pci_channel_io_frozen in pcie_do_recovery(),
the severity is fatal and fatal status should be cleared.
So we add pci_aer_clear_fatal_status().

Signed-off-by: Zhuo Chen <chenzhuo.1@...edance.com>
---
 drivers/pci/pcie/err.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c
index f80b21244ef1..b46f1d36c090 100644
--- a/drivers/pci/pcie/err.c
+++ b/drivers/pci/pcie/err.c
@@ -241,7 +241,10 @@ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
 	pci_walk_bridge(bridge, report_resume, &status);
 
 	pcie_clear_device_status(dev);
-	pci_aer_clear_nonfatal_status(dev);
+	if (state == pci_channel_io_frozen)
+		pci_aer_clear_fatal_status(dev);
+	else
+		pci_aer_clear_nonfatal_status(dev);
 
 	pci_info(bridge, "device recovery successful\n");
 	return status;
-- 
2.30.1 (Apple Git-130)