| Message ID | 20230818051319.551-13-mario.limonciello@amd.com |
|---|---|
| State | New |
| Headers | show |
| Series | Fix wakeup problems on some AMD platforms | expand |
On Fri, Aug 18, 2023 at 7:15 AM Mario Limonciello <mario.limonciello@amd.com> wrote: > > Intel systems that need to have PCIe ports in D3 for low power idle > specify this by constraints on the ACPI PNP0D80 device. As this information > is queried, limit the DMI BIOS year check to stop at 2024. This will > allow future systems to rely on the constraints check to set up policy > like non-Intel systems do. > > Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> > --- > v12->v13: > * New patch > --- > drivers/pci/pci.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c > index 0fc8d35154f97..5b9e11e254f34 100644 > --- a/drivers/pci/pci.c > +++ b/drivers/pci/pci.c > @@ -3049,10 +3049,11 @@ bool pci_bridge_d3_possible(struct pci_dev *bridge) > return true; > > /* > - * It is safe to put Intel PCIe ports from 2015 or newer > + * It is safe to put Intel PCIe ports from 2015 to 2024 > * to D3. > */ > if (bridge->vendor == PCI_VENDOR_ID_INTEL && > + dmi_get_bios_year() <= 2024 && > dmi_get_bios_year() >= 2015) A minor nit: The above would be somewhat easier to follow if it is written in a reverse order, that is dmi_get_bios_year() >= 2015 && dmi_get_bios_year() <= 2024 and maybe call dmi_get_bios_year() once to avoid the redundant string parsing? > return true; > break; > --
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 0fc8d35154f97..5b9e11e254f34 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -3049,10 +3049,11 @@ bool pci_bridge_d3_possible(struct pci_dev *bridge) return true; /* - * It is safe to put Intel PCIe ports from 2015 or newer + * It is safe to put Intel PCIe ports from 2015 to 2024 * to D3. */ if (bridge->vendor == PCI_VENDOR_ID_INTEL && + dmi_get_bios_year() <= 2024 && dmi_get_bios_year() >= 2015) return true; break;
Intel systems that need to have PCIe ports in D3 for low power idle specify this by constraints on the ACPI PNP0D80 device. As this information is queried, limit the DMI BIOS year check to stop at 2024. This will allow future systems to rely on the constraints check to set up policy like non-Intel systems do. Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> --- v12->v13: * New patch --- drivers/pci/pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)