From: sathyanarayanan.kuppuswamy@linux.intel.com
To: bhelgaas@google.com
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
ashok.raj@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com,
Keith Busch <keith.busch@intel.com>
Subject: [PATCH v15 1/5] PCI/ERR: Update error status after reset_link()
Date: Thu, 13 Feb 2020 10:20:13 -0800 [thread overview]
Message-ID: <4e6c0ed2b56935187a58659d089e51ffc91a03fe.1581617873.git.sathyanarayanan.kuppuswamy@linux.intel.com> (raw)
In-Reply-To: <cover.1581617873.git.sathyanarayanan.kuppuswamy@linux.intel.com>
From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Commit bdb5ac85777d ("PCI/ERR: Handle fatal error recovery") uses
reset_link() to recover from fatal errors. But during fatal error
recovery, if the initial value of error status is
PCI_ERS_RESULT_DISCONNECT or PCI_ERS_RESULT_NO_AER_DRIVER then
even after successful recovery (using reset_link()) pcie_do_recovery()
will report the recovery result as failure. So update the status of
error after reset_link().
Fixes: bdb5ac85777d ("PCI/ERR: Handle fatal error recovery")
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Keith Busch <keith.busch@intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Acked-by: Keith Busch <keith.busch@intel.com>
---
drivers/pci/pcie/err.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c
index 01dfc8bb7ca0..eefefe03857a 100644
--- a/drivers/pci/pcie/err.c
+++ b/drivers/pci/pcie/err.c
@@ -208,9 +208,11 @@ void pcie_do_recovery(struct pci_dev *dev, enum pci_channel_state state,
else
pci_walk_bus(bus, report_normal_detected, &status);
- if (state == pci_channel_io_frozen &&
- reset_link(dev, service) != PCI_ERS_RESULT_RECOVERED)
- goto failed;
+ if (state == pci_channel_io_frozen) {
+ status = reset_link(dev, service);
+ if (status != PCI_ERS_RESULT_RECOVERED)
+ goto failed;
+ }
if (status == PCI_ERS_RESULT_CAN_RECOVER) {
status = PCI_ERS_RESULT_RECOVERED;
--
2.21.0
next prev parent reply other threads:[~2020-02-13 18:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-13 18:20 [PATCH v15 0/5] Add Error Disconnect Recover (EDR) support sathyanarayanan.kuppuswamy
2020-02-13 18:20 ` sathyanarayanan.kuppuswamy [this message]
2020-02-26 13:41 ` [PATCH v15 1/5] PCI/ERR: Update error status after reset_link() Bjorn Helgaas
2020-02-13 18:20 ` [PATCH v15 2/5] PCI/DPC: Remove pcie_device reference from dpc_dev structure sathyanarayanan.kuppuswamy
2020-02-26 13:43 ` Bjorn Helgaas
2020-02-13 18:20 ` [PATCH v15 3/5] PCI/EDR: Export AER, DPC and error recovery functions sathyanarayanan.kuppuswamy
2020-02-26 1:02 ` Bjorn Helgaas
2020-02-26 19:30 ` Kuppuswamy Sathyanarayanan
2020-02-26 21:13 ` Bjorn Helgaas
2020-02-26 21:26 ` Kuppuswamy Sathyanarayanan
2020-02-26 21:48 ` Bjorn Helgaas
2020-02-13 18:20 ` [PATCH v15 4/5] PCI/DPC: Add Error Disconnect Recover (EDR) support sathyanarayanan.kuppuswamy
2020-02-26 1:02 ` Bjorn Helgaas
2020-02-26 18:42 ` Kuppuswamy Sathyanarayanan
2020-02-26 21:32 ` Bjorn Helgaas
2020-02-26 22:11 ` Kuppuswamy Sathyanarayanan
2020-02-26 22:41 ` Bjorn Helgaas
2020-02-13 18:20 ` [PATCH v15 5/5] PCI/ACPI: Enable EDR support sathyanarayanan.kuppuswamy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4e6c0ed2b56935187a58659d089e51ffc91a03fe.1581617873.git.sathyanarayanan.kuppuswamy@linux.intel.com \
--to=sathyanarayanan.kuppuswamy@linux.intel.com \
--cc=ashok.raj@intel.com \
--cc=bhelgaas@google.com \
--cc=keith.busch@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).