From: Yazen Ghannam <yazen.ghannam@xxxxxxx>
Currently, aer_service_init() checks if AER is available and that
Firmware First handling is not enabled. The _OSC request for AER is
not taken into account when deciding to enable AER in Linux.
We should check that the _OSC control for AER is set. If it's not
then AER should be disabled.
The _OSC control for AER is not requested when APEI Firmware First is
used, so the same condition applies.
Mark AER as disabled if the _OSC request was not made or accepted.
Remove redunant check for aer_acpi_firmware_first() when calling
aer_service_init(), since this is check is already included when
checking the _OSC control.
Signed-off-by: Yazen Ghannam <yazen.ghannam@xxxxxxx>
---
drivers/acpi/pci_root.c | 3 +++
drivers/pci/pcie/aer/aerdrv.c | 2 +-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 6fc204a52493..19a625ed8de9 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -512,6 +512,9 @@ static void negotiate_os_control(struct acpi_pci_root *root, int *no_aspm)
*/
*no_aspm = 1;
}
+
+ if (!(requested & control & OSC_PCI_EXPRESS_AER_CONTROL))
+ pci_no_aer();
}
static int acpi_pci_root_add(struct acpi_device *device,
diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c
index 6ff5f5b4f5e6..39bb059777d0 100644
--- a/drivers/pci/pcie/aer/aerdrv.c
+++ b/drivers/pci/pcie/aer/aerdrv.c
@@ -374,7 +374,7 @@ static void aer_error_resume(struct pci_dev *dev)
*/
static int __init aer_service_init(void)
{
- if (!pci_aer_available() || aer_acpi_firmware_first())
+ if (!pci_aer_available())
return -ENXIO;
return pcie_port_service_register(&aerdriver);
}
--
2.14.1
--
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