From: Oza Pawandeep <poza@codeaurora.org>
To: Bjorn Helgaas <bhelgaas@google.com>,
Philippe Ombredanne <pombredanne@nexb.com>,
Thomas Gleixner <tglx@linutronix.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Kate Stewart <kstewart@linuxfoundation.org>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Dongdong Liu <liudongdong3@huawei.com>,
Keith Busch <keith.busch@intel.com>, Wei Zhang <wzhang@fb.com>,
Sinan Kaya <okaya@codeaurora.org>,
Timur Tabi <timur@codeaurora.org>
Cc: Oza Pawandeep <poza@codeaurora.org>
Subject: [PATCH v2 2/6] PCI/AER: Clear uncorrectable fatal error status bits
Date: Fri, 22 Jun 2018 05:58:10 -0400 [thread overview]
Message-ID: <1529661494-20936-3-git-send-email-poza@codeaurora.org> (raw)
In-Reply-To: <1529661494-20936-1-git-send-email-poza@codeaurora.org>
During ERR_FATAL handling, AER calls pci_cleanup_aer_uncorrect_error_status
which should handle pci_channel_io_frozen case in order to determine if it
has to clear fatal bits.
Signed-off-by: Oza Pawandeep <poza@codeaurora.org>
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index d6cb1f0..e9c115d 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -369,7 +369,12 @@ int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
/* Clean AER Root Error Status */
pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
- status &= ~mask; /* Clear corresponding nonfatal bits */
+
+ if (dev->error_state == pci_channel_io_normal)
+ status &= ~mask; /* Clear corresponding nonfatal bits */
+ else
+ status &= mask; /* Clear corresponding fatal bits */
+
if (status)
pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c
index f7ce0cb..00d2875 100644
--- a/drivers/pci/pcie/err.c
+++ b/drivers/pci/pcie/err.c
@@ -288,6 +288,7 @@ void pcie_do_fatal_recovery(struct pci_dev *dev, u32 service)
struct pci_dev *pdev, *temp;
pci_ers_result_t result;
+ dev->error_state = pci_channel_io_frozen;
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
udev = dev;
else
@@ -323,6 +324,7 @@ void pcie_do_fatal_recovery(struct pci_dev *dev, u32 service)
if (pcie_wait_for_link(udev, true))
pci_rescan_bus(udev->bus);
pci_info(dev, "Device recovery from fatal error successful\n");
+ dev->error_state = pci_channel_io_normal;
} else {
pci_uevent_ers(dev, PCI_ERS_RESULT_DISCONNECT);
pci_info(dev, "Device recovery from fatal error failed\n");
--
2.7.4
next prev parent reply other threads:[~2018-06-22 9:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-22 9:58 [PATCH v2 0/6] Fix issues and cleanup for ERR_FATAL and ERR_NONFATAL Oza Pawandeep
2018-06-22 9:58 ` [PATCH v2 1/6] PCI/AER: Take severity mask into account while clearing error bits Oza Pawandeep
2018-07-17 19:03 ` Bjorn Helgaas
2018-07-17 21:36 ` Bjorn Helgaas
2018-07-18 9:13 ` poza
2018-06-22 9:58 ` Oza Pawandeep [this message]
2018-06-22 9:58 ` [PATCH v2 3/6] PCI/ERR: Cleanup ERR_FATAL of error broadcast Oza Pawandeep
2018-06-22 9:58 ` [PATCH v2 4/6] PCI/AER: Clear device error status bits during ERR_FATAL and ERR_NONFATAL Oza Pawandeep
2018-06-22 9:58 ` [PATCH v2 5/6] PCI/AER: Fix correctable status bits clearing in device register Oza Pawandeep
2018-06-22 9:58 ` [PATCH v2 6/6] PCI/PORTDRV: Remove ERR_FATAL handling from pcie_portdrv_slot_reset() Oza Pawandeep
2018-07-18 19:10 ` Bjorn Helgaas
2018-07-05 15:12 ` [PATCH v2 0/6] Fix issues and cleanup for ERR_FATAL and ERR_NONFATAL poza
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