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PCI/ASPM: Set only ASPM_STATE_L1 when driver enables L1

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Previously pci_enable_link_state(PCIE_LINK_STATE_L1) enabled L1SS as well
as L1.  Enable only ASPM_STATE_L1 when the caller enables L1.

The only current caller is vmd_pm_enable_quirk(), which enables *all* ASPM
states, so this should have no functional effect.

[bhelgaas: commit log]
Link: https://lore.kernel.org/r/20230504111301.229358-3-ajayagarwal@google.com
Signed-off-by: Ajay Agarwal <ajayagarwal@google.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
This commit is contained in:
Ajay Agarwal
2023-05-04 16:42:58 +05:30
committed by Bjorn Helgaas
parent fb097dcd5a
commit 25edb25d79
1 changed files with 1 additions and 2 deletions
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3
drivers/pci/pcie/aspm.c
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@@ -1173,8 +1173,7 @@ int pci_enable_link_state(struct pci_dev *pdev, int state)
if (state & PCIE_LINK_STATE_L0S)
link->aspm_default |= ASPM_STATE_L0S;
if (state & PCIE_LINK_STATE_L1)
/* L1 PM substates require L1 */
link->aspm_default |= ASPM_STATE_L1 | ASPM_STATE_L1SS;
link->aspm_default |= ASPM_STATE_L1;
if (state & PCIE_LINK_STATE_L1_1)
link->aspm_default |= ASPM_STATE_L1_1;
if (state & PCIE_LINK_STATE_L1_2)