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| author | David E. Box <david.e.box@linux.intel.com> | 2024-02-23 14:58:51 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2024-03-12 12:09:11 -0500 |
| commit | c198fafa0125e97728d16411aa653602900ab0bc (patch) | |
| tree | 0ea8d7b9f37d80a64925330b28163a5309b291b3 /drivers | |
| parent | 17423360a27ae58c1850f588bdd8013bbfcd250b (diff) | |
| download | lwn-c198fafa0125e97728d16411aa653602900ab0bc.tar.gz lwn-c198fafa0125e97728d16411aa653602900ab0bc.zip | |
PCI/ASPM: Call pci_save_ltr_state() from pci_save_pcie_state()
ASPM state is saved and restored from pci_save/restore_pcie_state(). Since
the LTR Capability is linked with ASPM, move the LTR save and restore calls
there as well. No functional change intended.
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20240128233212.1139663-6-david.e.box@linux.intel.com
Link: https://lore.kernel.org/r/20240223205851.114931-6-helgaas@kernel.org
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/pci.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index ca6673588bc0..4ea98665172d 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1624,6 +1624,7 @@ static int pci_save_pcie_state(struct pci_dev *dev) pcie_capability_read_word(dev, PCI_EXP_SLTCTL2, &cap[i++]); pci_save_aspm_l1ss_state(dev); + pci_save_ltr_state(dev); return 0; } @@ -1634,6 +1635,12 @@ static void pci_restore_pcie_state(struct pci_dev *dev) struct pci_cap_saved_state *save_state; u16 *cap, lnkctl; + /* + * Restore max latencies (in the LTR capability) before enabling + * LTR itself in PCI_EXP_DEVCTL2. + */ + pci_restore_ltr_state(dev); + save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP); if (!save_state) return; @@ -1726,7 +1733,6 @@ int pci_save_state(struct pci_dev *dev) if (i != 0) return i; - pci_save_ltr_state(dev); pci_save_dpc_state(dev); pci_save_aer_state(dev); pci_save_ptm_state(dev); @@ -1827,12 +1833,6 @@ void pci_restore_state(struct pci_dev *dev) if (!dev->state_saved) return; - /* - * Restore max latencies (in the LTR capability) before enabling - * LTR itself (in the PCIe capability). - */ - pci_restore_ltr_state(dev); - pci_restore_pcie_state(dev); pci_restore_pasid_state(dev); pci_restore_pri_state(dev); |