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| author |   Keith Busch <keith.busch@intel.com> | 2018-09-20 10:27:09 -0600 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2018-09-21 12:18:08 -0500 |
| commit | 60271ab044a53edb9dcbe76bebea2221c4ff04d9 (patch) | |
| tree | 08fb7f1367b8f72f6dda95b78b5a1cd5d734fd08 /drivers/pci/pcie/aer.c | |
| parent | PCI/DPC: Save and restore config state (diff) | |
| download | linux-dev-60271ab044a53edb9dcbe76bebea2221c4ff04d9.tar.xz linux-dev-60271ab044a53edb9dcbe76bebea2221c4ff04d9.zip | |
PCI/AER: Take reference on error devices
Error handling may be running in parallel with a hot removal. Reference
count the device during AER handling so the device can not be freed while
AER wants to reference it.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Sinan Kaya <okaya@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/pci/pcie/aer.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index 637d638f73da..ffbbd759683c 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -866,7 +866,7 @@ void cper_print_aer(struct pci_dev *dev, int aer_severity, static int add_error_device(struct aer_err_info *e_info, struct pci_dev *dev) { if (e_info->error_dev_num < AER_MAX_MULTI_ERR_DEVICES) { - e_info->dev[e_info->error_dev_num] = dev; + e_info->dev[e_info->error_dev_num] = pci_dev_get(dev); e_info->error_dev_num++; return 0; } @@ -1013,6 +1013,7 @@ static void handle_error_source(struct pci_dev *dev, struct aer_err_info *info) pcie_do_nonfatal_recovery(dev); else if (info->severity == AER_FATAL) pcie_do_fatal_recovery(dev, PCIE_PORT_SERVICE_AER); + pci_dev_put(dev); } #ifdef CONFIG_ACPI_APEI_PCIEAER |