1 files changed, 10 insertions, 65 deletions

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index a0af94cfcf7d..3125bf29506c 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1651,25 +1651,10 @@ static int pci_save_pcie_state(struct pci_dev *dev)
 	pcie_capability_read_word(dev, PCI_EXP_LNKCTL2, &cap[i++]);
 	pcie_capability_read_word(dev, PCI_EXP_SLTCTL2, &cap[i++]);
 
-	return 0;
-}
-
-void pci_bridge_reconfigure_ltr(struct pci_dev *dev)
-{
-#ifdef CONFIG_PCIEASPM
-	struct pci_dev *bridge;
-	u32 ctl;
+	pci_save_aspm_l1ss_state(dev);
+	pci_save_ltr_state(dev);
 
-	bridge = pci_upstream_bridge(dev);
-	if (bridge && bridge->ltr_path) {
-		pcie_capability_read_dword(bridge, PCI_EXP_DEVCTL2, &ctl);
-		if (!(ctl & PCI_EXP_DEVCTL2_LTR_EN)) {
-			pci_dbg(bridge, "re-enabling LTR\n");
-			pcie_capability_set_word(bridge, PCI_EXP_DEVCTL2,
-						 PCI_EXP_DEVCTL2_LTR_EN);
-		}
-	}
-#endif
+	return 0;
 }
 
 static void pci_restore_pcie_state(struct pci_dev *dev)
@@ -1678,6 +1663,13 @@ static void pci_restore_pcie_state(struct pci_dev *dev)
 	struct pci_cap_saved_state *save_state;
 	u16 *cap;
 
+	/*
+	 * Restore max latencies (in the LTR capability) before enabling
+	 * LTR itself in PCI_EXP_DEVCTL2.
+	 */
+	pci_restore_ltr_state(dev);
+	pci_restore_aspm_l1ss_state(dev);
+
 	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
 	if (!save_state)
 		return;
@@ -1735,46 +1727,6 @@ static void pci_restore_pcix_state(struct pci_dev *dev)
 	pci_write_config_word(dev, pos + PCI_X_CMD, cap[i++]);
 }
 
-static void pci_save_ltr_state(struct pci_dev *dev)
-{
-	int ltr;
-	struct pci_cap_saved_state *save_state;
-	u32 *cap;
-
-	if (!pci_is_pcie(dev))
-		return;
-
-	ltr = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_LTR);
-	if (!ltr)
-		return;
-
-	save_state = pci_find_saved_ext_cap(dev, PCI_EXT_CAP_ID_LTR);
-	if (!save_state) {
-		pci_err(dev, "no suspend buffer for LTR; ASPM issues possible after resume\n");
-		return;
-	}
-
-	/* Some broken devices only support dword access to LTR */
-	cap = &save_state->cap.data[0];
-	pci_read_config_dword(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, cap);
-}
-
-static void pci_restore_ltr_state(struct pci_dev *dev)
-{
-	struct pci_cap_saved_state *save_state;
-	int ltr;
-	u32 *cap;
-
-	save_state = pci_find_saved_ext_cap(dev, PCI_EXT_CAP_ID_LTR);
-	ltr = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_LTR);
-	if (!save_state || !ltr)
-		return;
-
-	/* Some broken devices only support dword access to LTR */
-	cap = &save_state->cap.data[0];
-	pci_write_config_dword(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, *cap);
-}
-
 /**
  * pci_save_state - save the PCI configuration space of a device before
  *		    suspending
@@ -1799,7 +1751,6 @@ 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);
@@ -1900,12 +1851,6 @@ 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);