| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 057/159] PCI/ACPI: Correct error message for ASPM disabling | Date | Fri, 22 Nov 2019 11:27:28 +0100 |
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From: Sinan Kaya <okaya@kernel.org>
[ Upstream commit 1ad61b612b95980a4d970c52022aa01dfc0f6068 ]
If _OSC execution fails today for platforms without an _OSC entry, code is printing a misleading message saying disabling ASPM as follows:
acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
We need to ensure that platform supports ASPM to begin with.
Reported-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Sinan Kaya <okaya@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/acpi/pci_root.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 3b0b4bd67b71b..4031ec8024cee 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -454,8 +454,9 @@ static void negotiate_os_control(struct acpi_pci_root *root, int *no_aspm) decode_osc_support(root, "OS supports", support); status = acpi_pci_osc_support(root, support); if (ACPI_FAILURE(status)) { - dev_info(&device->dev, "_OSC failed (%s); disabling ASPM\n", - acpi_format_exception(status)); + dev_info(&device->dev, "_OSC failed (%s)%s\n", + acpi_format_exception(status), + pcie_aspm_support_enabled() ? "; disabling ASPM" : ""); *no_aspm = 1; return; } -- 2.20.1
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