@@ -491,13 +491,8 @@ static void negotiate_os_control(struct acpi_pci_root *root, int *no_aspm,
if (IS_ENABLED(CONFIG_HOTPLUG_PCI_SHPC))
control |= OSC_PCI_SHPC_NATIVE_HP_CONTROL;
- if (pci_aer_available()) {
- if (aer_acpi_firmware_first())
- dev_info(&device->dev,
- "PCIe AER handled by firmware\n");
- else
- control |= OSC_PCI_EXPRESS_AER_CONTROL;
- }
+ if (pci_aer_available())
+ control |= OSC_PCI_EXPRESS_AER_CONTROL;
requested = control;
status = acpi_pci_osc_control_set(handle, &control,
@@ -316,29 +316,6 @@ int pcie_aer_get_firmware_first(struct pci_dev *dev)
return dev->__aer_firmware_first;
}
-static bool aer_firmware_first;
-
-/**
- * aer_acpi_firmware_first - Check if APEI should control AER.
- */
-bool aer_acpi_firmware_first(void)
-{
- static bool parsed = false;
- struct aer_hest_parse_info info = {
- .pci_dev = NULL, /* Check all PCIe devices */
- .firmware_first = 0,
- };
-
- if (pcie_ports_native)
- return false;
-
- if (!parsed) {
- apei_hest_parse(aer_hest_parse, &info);
- aer_firmware_first = info.firmware_first;
- parsed = true;
- }
- return aer_firmware_first;
-}
#endif
#define PCI_EXP_AER_FLAGS (PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE | \
@@ -1453,7 +1430,7 @@ static struct pcie_port_service_driver aerdriver = {
*/
int __init pcie_aer_init(void)
{
- if (!pci_aer_available() || aer_acpi_firmware_first())
+ if (!pci_aer_available())
return -ENXIO;
return pcie_port_service_register(&aerdriver);
}
@@ -116,10 +116,4 @@ static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
#endif /* CONFIG_ACPI */
-#ifdef CONFIG_ACPI_APEI
-extern bool aer_acpi_firmware_first(void);
-#else
-static inline bool aer_acpi_firmware_first(void) { return false; }
-#endif
-
#endif /* _PCI_ACPI_H_ */
HEST is used to describe the meaning of errors received as part of ACPI Platform Error Interfaces (APEI). HEST is tightly coupled to ownership of AER, however the correct way to determine AER ownership is the _OSC method. _OSC is negotiated per root bus. It's possible to have one HEST descriptor for all root busses where AER is owned by firmware, and still have root busses that are not firmware-first. In that case we would incorrectly disable AER services globally. Instead of using HEST in making the determination, always request AER control via _OSC, and only disable AER when firmware denies control. Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> --- drivers/acpi/pci_root.c | 9 ++------- drivers/pci/pcie/aer.c | 25 +------------------------ include/linux/pci-acpi.h | 6 ------ 3 files changed, 3 insertions(+), 37 deletions(-)