1 files changed, 18 insertions, 50 deletions

diff --git a/drivers/net/wwan/iosm/iosm_ipc_pcie.c b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
index 2fe88b8be348..d3d34d1c4704 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_pcie.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
@@ -232,6 +232,7 @@ static void ipc_pcie_config_init(struct iosm_pcie *ipc_pcie)
  */
 static enum ipc_pcie_sleep_state ipc_pcie_read_bios_cfg(struct device *dev)
 {
+	enum ipc_pcie_sleep_state sleep_state = IPC_PCIE_D0L12;
 	union acpi_object *object;
 	acpi_handle handle_acpi;
 
@@ -242,18 +243,23 @@ static enum ipc_pcie_sleep_state ipc_pcie_read_bios_cfg(struct device *dev)
 	}
 
 	object = acpi_evaluate_dsm(handle_acpi, &wwan_acpi_guid, 0, 3, NULL);
+	if (!object)
+		goto default_ret;
+
+	if (object->integer.value == 3)
+		sleep_state = IPC_PCIE_D3L2;
 
-	if (object && object->integer.value == 3)
-		return IPC_PCIE_D3L2;
+	kfree(object);
 
 default_ret:
-	return IPC_PCIE_D0L12;
+	return sleep_state;
 }
 
 static int ipc_pcie_probe(struct pci_dev *pci,
 			  const struct pci_device_id *pci_id)
 {
 	struct iosm_pcie *ipc_pcie = kzalloc(sizeof(*ipc_pcie), GFP_KERNEL);
+	int ret;
 
 	pr_debug("Probing device 0x%X from the vendor 0x%X", pci_id->device,
 		 pci_id->vendor);
@@ -286,6 +292,12 @@ static int ipc_pcie_probe(struct pci_dev *pci,
 		goto pci_enable_fail;
 	}
 
+	ret = dma_set_mask(ipc_pcie->dev, DMA_BIT_MASK(64));
+	if (ret) {
+		dev_err(ipc_pcie->dev, "Could not set PCI DMA mask: %d", ret);
+		return ret;
+	}
+
 	ipc_pcie_config_aspm(ipc_pcie);
 	dev_dbg(ipc_pcie->dev, "PCIe device enabled.");
 
@@ -320,6 +332,7 @@ ret_fail:
 
 static const struct pci_device_id iosm_ipc_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_CP_DEVICE_7560_ID) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_CP_DEVICE_7360_ID) },
 	{}
 };
 MODULE_DEVICE_TABLE(pci, iosm_ipc_ids);
@@ -363,67 +376,22 @@ static int __maybe_unused ipc_pcie_resume_s2idle(struct iosm_pcie *ipc_pcie)
 
 int __maybe_unused ipc_pcie_suspend(struct iosm_pcie *ipc_pcie)
 {
-	struct pci_dev *pdev;
-	int ret;
-
-	pdev = ipc_pcie->pci;
-
-	/* Execute D3 one time. */
-	if (pdev->current_state != PCI_D0) {
-		dev_dbg(ipc_pcie->dev, "done for PM=%d", pdev->current_state);
-		return 0;
-	}
-
 	/* The HAL shall ask the shared memory layer whether D3 is allowed. */
 	ipc_imem_pm_suspend(ipc_pcie->imem);
 
-	/* Save the PCI configuration space of a device before suspending. */
-	ret = pci_save_state(pdev);
-
-	if (ret) {
-		dev_err(ipc_pcie->dev, "pci_save_state error=%d", ret);
-		return ret;
-	}
-
-	/* Set the power state of a PCI device.
-	 * Transition a device to a new power state, using the device's PCI PM
-	 * registers.
-	 */
-	ret = pci_set_power_state(pdev, PCI_D3cold);
-
-	if (ret) {
-		dev_err(ipc_pcie->dev, "pci_set_power_state error=%d", ret);
-		return ret;
-	}
-
 	dev_dbg(ipc_pcie->dev, "SUSPEND done");
-	return ret;
+	return 0;
 }
 
 int __maybe_unused ipc_pcie_resume(struct iosm_pcie *ipc_pcie)
 {
-	int ret;
-
-	/* Set the power state of a PCI device.
-	 * Transition a device to a new power state, using the device's PCI PM
-	 * registers.
-	 */
-	ret = pci_set_power_state(ipc_pcie->pci, PCI_D0);
-
-	if (ret) {
-		dev_err(ipc_pcie->dev, "pci_set_power_state error=%d", ret);
-		return ret;
-	}
-
-	pci_restore_state(ipc_pcie->pci);
-
 	/* The HAL shall inform the shared memory layer that the device is
 	 * active.
 	 */
 	ipc_imem_pm_resume(ipc_pcie->imem);
 
 	dev_dbg(ipc_pcie->dev, "RESUME done");
-	return ret;
+	return 0;
 }
 
 static int __maybe_unused ipc_pcie_suspend_cb(struct device *dev)