aerdrv: Move cper_print_aer() call out of interrupt context
The following warning was seen on 3.9 when a corrected PCIe error was being
handled by the AER subsystem.
WARNING: at .../drivers/pci/search.c:214 pci_get_dev_by_id+0x8a/0x90()
This occurred because a call to pci_get_domain_bus_and_slot() was added to
cper_print_pcie() to setup for the call to cper_print_aer(). The warning
showed up because cper_print_pcie() is called in an interrupt context and
pci_get* functions are not supposed to be called in that context.
The solution is to move the cper_print_aer() call out of the interrupt
context and into aer_recover_work_func() to avoid any warnings when calling
pci_get* functions.
Signed-off-by: Lance Ortiz <lance.ortiz@hp.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c
index fefc2ca..33dc6a0 100644
--- a/drivers/acpi/apei/cper.c
+++ b/drivers/acpi/apei/cper.c
@@ -250,10 +250,6 @@
static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
const struct acpi_hest_generic_data *gdata)
{
-#ifdef CONFIG_ACPI_APEI_PCIEAER
- struct pci_dev *dev;
-#endif
-
if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE)
printk("%s""port_type: %d, %s\n", pfx, pcie->port_type,
pcie->port_type < ARRAY_SIZE(cper_pcie_port_type_strs) ?
@@ -285,20 +281,6 @@
printk(
"%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n",
pfx, pcie->bridge.secondary_status, pcie->bridge.control);
-#ifdef CONFIG_ACPI_APEI_PCIEAER
- dev = pci_get_domain_bus_and_slot(pcie->device_id.segment,
- pcie->device_id.bus, pcie->device_id.function);
- if (!dev) {
- pr_err("PCI AER Cannot get PCI device %04x:%02x:%02x.%d\n",
- pcie->device_id.segment, pcie->device_id.bus,
- pcie->device_id.slot, pcie->device_id.function);
- return;
- }
- if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO)
- cper_print_aer(pfx, dev, gdata->error_severity,
- (struct aer_capability_regs *) pcie->aer_info);
- pci_dev_put(dev);
-#endif
}
static const char *apei_estatus_section_flag_strs[] = {
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index d668a8a..403baf4 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -454,7 +454,9 @@
aer_severity = cper_severity_to_aer(sev);
aer_recover_queue(pcie_err->device_id.segment,
pcie_err->device_id.bus,
- devfn, aer_severity);
+ devfn, aer_severity,
+ (struct aer_capability_regs *)
+ pcie_err->aer_info);
}
}