[v8,1/8] PCI/ERR: Update error status after reset_link()
diff mbox series

Message ID a3476743748d06a3bb4ee45b45538870d90cbe98.1566865502.git.sathyanarayanan.kuppuswamy@linux.intel.com
State New
Delegated to: Bjorn Helgaas
Headers show
Series
  • Add Error Disconnect Recover (EDR) support
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Commit Message

Kuppuswamy Sathyanarayanan Aug. 27, 2019, 5:29 p.m. UTC
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, if the reset is
successful there is no need to continue the rest of the error recovery
checks. Also, 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 | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

Patch
diff mbox series

diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c
index 773197a12568..c3e883d47675 100644
--- a/drivers/pci/pcie/err.c
+++ b/drivers/pci/pcie/err.c
@@ -204,9 +204,12 @@  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;
+		goto done;
+	}
 
 	if (status == PCI_ERS_RESULT_CAN_RECOVER) {
 		status = PCI_ERS_RESULT_RECOVERED;
@@ -228,6 +231,7 @@  void pcie_do_recovery(struct pci_dev *dev, enum pci_channel_state state,
 	if (status != PCI_ERS_RESULT_RECOVERED)
 		goto failed;
 
+done:
 	pci_dbg(dev, "broadcast resume message\n");
 	pci_walk_bus(bus, report_resume, &status);