14 files changed, 84 insertions, 94 deletions

diff --git a/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.h b/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.h
index e77084e76718..fdc211bbeda7 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.h
@@ -51,7 +51,7 @@ struct ipc_chnl_cfg {
 /**
  * ipc_chnl_cfg_get - Get pipe configuration.
  * @chnl_cfg:		Array of ipc_chnl_cfg struct
- * @index:		Channel index (upto MAX_CHANNELS)
+ * @index:		Channel index (up to MAX_CHANNELS)
  *
  * Return: 0 on success and failure value on error
  */
diff --git a/drivers/net/wwan/iosm/iosm_ipc_devlink.c b/drivers/net/wwan/iosm/iosm_ipc_devlink.c
index 2fe724d623c0..301a9d294d30 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_devlink.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_devlink.c
@@ -21,7 +21,8 @@ static struct iosm_coredump_file_info list[IOSM_NOF_CD_REGION] = {
 
 /* Get the param values for the specific param ID's */
 static int ipc_devlink_get_param(struct devlink *dl, u32 id,
-				 struct devlink_param_gset_ctx *ctx)
+				 struct devlink_param_gset_ctx *ctx,
+				 struct netlink_ext_ack *extack)
 {
 	struct iosm_devlink *ipc_devlink = devlink_priv(dl);
 
@@ -33,7 +34,8 @@ static int ipc_devlink_get_param(struct devlink *dl, u32 id,
 
 /* Set the param values for the specific param ID's */
 static int ipc_devlink_set_param(struct devlink *dl, u32 id,
-				 struct devlink_param_gset_ctx *ctx)
+				 struct devlink_param_gset_ctx *ctx,
+				 struct netlink_ext_ack *extack)
 {
 	struct iosm_devlink *ipc_devlink = devlink_priv(dl);
 
@@ -210,7 +212,7 @@ static int ipc_devlink_create_region(struct iosm_devlink *devlink)
 			rc = PTR_ERR(devlink->cd_regions[i]);
 			dev_err(devlink->dev, "Devlink region fail,err %d", rc);
 			/* Delete previously created regions */
-			for ( ; i >= 0; i--)
+			for (i--; i >= 0; i--)
 				devlink_region_destroy(devlink->cd_regions[i]);
 			goto region_create_fail;
 		}
diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem.c b/drivers/net/wwan/iosm/iosm_ipc_imem.c
index 635301d677e1..530a3ea47a1a 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_imem.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_imem.c
@@ -4,7 +4,6 @@
  */
 
 #include <linux/delay.h>
-#include <linux/pm_runtime.h>
 
 #include "iosm_ipc_chnl_cfg.h"
 #include "iosm_ipc_devlink.h"
@@ -632,11 +631,6 @@ static void ipc_imem_run_state_worker(struct work_struct *instance)
 	/* Complete all memory stores after setting bit */
 	smp_mb__after_atomic();
 
-	if (ipc_imem->pcie->pci->device == INTEL_CP_DEVICE_7560_ID) {
-		pm_runtime_mark_last_busy(ipc_imem->dev);
-		pm_runtime_put_autosuspend(ipc_imem->dev);
-	}
-
 	return;
 
 err_ipc_mux_deinit:
@@ -1240,7 +1234,6 @@ void ipc_imem_cleanup(struct iosm_imem *ipc_imem)
 
 	/* forward MDM_NOT_READY to listeners */
 	ipc_uevent_send(ipc_imem->dev, UEVENT_MDM_NOT_READY);
-	pm_runtime_get_sync(ipc_imem->dev);
 
 	hrtimer_cancel(&ipc_imem->td_alloc_timer);
 	hrtimer_cancel(&ipc_imem->tdupdate_timer);
@@ -1388,24 +1381,20 @@ struct iosm_imem *ipc_imem_init(struct iosm_pcie *pcie, unsigned int device_id,
 	/* The phase is set to power off. */
 	ipc_imem->phase = IPC_P_OFF;
 
-	hrtimer_init(&ipc_imem->startup_timer, CLOCK_MONOTONIC,
-		     HRTIMER_MODE_REL);
-	ipc_imem->startup_timer.function = ipc_imem_startup_timer_cb;
+	hrtimer_setup(&ipc_imem->startup_timer, ipc_imem_startup_timer_cb, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL);
 
-	hrtimer_init(&ipc_imem->tdupdate_timer, CLOCK_MONOTONIC,
-		     HRTIMER_MODE_REL);
-	ipc_imem->tdupdate_timer.function = ipc_imem_td_update_timer_cb;
+	hrtimer_setup(&ipc_imem->tdupdate_timer, ipc_imem_td_update_timer_cb, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL);
 
-	hrtimer_init(&ipc_imem->fast_update_timer, CLOCK_MONOTONIC,
-		     HRTIMER_MODE_REL);
-	ipc_imem->fast_update_timer.function = ipc_imem_fast_update_timer_cb;
+	hrtimer_setup(&ipc_imem->fast_update_timer, ipc_imem_fast_update_timer_cb, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL);
 
-	hrtimer_init(&ipc_imem->td_alloc_timer, CLOCK_MONOTONIC,
-		     HRTIMER_MODE_REL);
-	ipc_imem->td_alloc_timer.function = ipc_imem_td_alloc_timer_cb;
+	hrtimer_setup(&ipc_imem->td_alloc_timer, ipc_imem_td_alloc_timer_cb, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL);
 
-	hrtimer_init(&ipc_imem->adb_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-	ipc_imem->adb_timer.function = ipc_imem_adb_timer_cb;
+	hrtimer_setup(&ipc_imem->adb_timer, ipc_imem_adb_timer_cb, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL);
 
 	if (ipc_imem_config(ipc_imem)) {
 		dev_err(ipc_imem->dev, "failed to initialize the imem");
@@ -1426,16 +1415,6 @@ struct iosm_imem *ipc_imem_init(struct iosm_pcie *pcie, unsigned int device_id,
 
 		set_bit(IOSM_DEVLINK_INIT, &ipc_imem->flag);
 	}
-
-	if (!pm_runtime_enabled(ipc_imem->dev))
-		pm_runtime_enable(ipc_imem->dev);
-
-	pm_runtime_set_autosuspend_delay(ipc_imem->dev,
-					 IPC_MEM_AUTO_SUSPEND_DELAY_MS);
-	pm_runtime_use_autosuspend(ipc_imem->dev);
-	pm_runtime_allow(ipc_imem->dev);
-	pm_runtime_mark_last_busy(ipc_imem->dev);
-
 	return ipc_imem;
 devlink_channel_fail:
 	ipc_devlink_deinit(ipc_imem->ipc_devlink);
diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem.h b/drivers/net/wwan/iosm/iosm_ipc_imem.h
index 0144b45e2afb..5664ac507c90 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_imem.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_imem.h
@@ -103,8 +103,6 @@ struct ipc_chnl_cfg;
 #define FULLY_FUNCTIONAL 0
 #define IOSM_DEVLINK_INIT 1
 
-#define IPC_MEM_AUTO_SUSPEND_DELAY_MS 5000
-
 /* List of the supported UL/DL pipes. */
 enum ipc_mem_pipes {
 	IPC_MEM_PIPE_0 = 0,
diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem_ops.h b/drivers/net/wwan/iosm/iosm_ipc_imem_ops.h
index 026c5bd0f999..6bd0290e8be7 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_imem_ops.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_imem_ops.h
@@ -36,8 +36,8 @@
 /**
  * ipc_imem_sys_port_open - Open a port link to CP.
  * @ipc_imem:	Imem instance.
- * @chl_id:	Channel Indentifier.
- * @hp_id:	HP Indentifier.
+ * @chl_id:	Channel Identifier.
+ * @hp_id:	HP Identifier.
  *
  * Return: channel instance on success, NULL for failure
  */
diff --git a/drivers/net/wwan/iosm/iosm_ipc_mmio.c b/drivers/net/wwan/iosm/iosm_ipc_mmio.c
index 63eb08c43c05..6764c13530b9 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_mmio.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_mmio.c
@@ -104,7 +104,7 @@ struct iosm_mmio *ipc_mmio_init(void __iomem *mmio, struct device *dev)
 			break;
 
 		msleep(20);
-	} while (retries-- > 0);
+	} while (--retries > 0);
 
 	if (!retries) {
 		dev_err(ipc_mmio->dev, "invalid exec stage %X", stage);
diff --git a/drivers/net/wwan/iosm/iosm_ipc_mux.h b/drivers/net/wwan/iosm/iosm_ipc_mux.h
index 17ca8d1f9397..db5f1f9ebf26 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_mux.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_mux.h
@@ -432,7 +432,7 @@ int ipc_mux_open_session(struct iosm_mux *ipc_mux, int session_nr);
 int ipc_mux_close_session(struct iosm_mux *ipc_mux, int session_nr);
 
 /**
- * ipc_mux_get_max_sessions - Retuns the maximum sessions supported on the
+ * ipc_mux_get_max_sessions - Returns the maximum sessions supported on the
  *			      provided MUX instance..
  * @ipc_mux:	Pointer to MUX data-struct
  *
diff --git a/drivers/net/wwan/iosm/iosm_ipc_pcie.c b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
index 3a259c9abefd..08ff0d6ccfab 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_pcie.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
@@ -6,7 +6,7 @@
 #include <linux/acpi.h>
 #include <linux/bitfield.h>
 #include <linux/module.h>
-#include <linux/pm_runtime.h>
+#include <linux/suspend.h>
 #include <net/rtnetlink.h>
 
 #include "iosm_ipc_imem.h"
@@ -19,6 +19,7 @@ MODULE_LICENSE("GPL v2");
 /* WWAN GUID */
 static guid_t wwan_acpi_guid = GUID_INIT(0xbad01b75, 0x22a8, 0x4f48, 0x87, 0x92,
 				       0xbd, 0xde, 0x94, 0x67, 0x74, 0x7d);
+static bool pci_registered;
 
 static void ipc_pcie_resources_release(struct iosm_pcie *ipc_pcie)
 {
@@ -68,7 +69,7 @@ static int ipc_pcie_resources_request(struct iosm_pcie *ipc_pcie)
 {
 	struct pci_dev *pci = ipc_pcie->pci;
 	u32 cap = 0;
-	u32 ret;
+	int ret;
 
 	/* Reserved PCI I/O and memory resources.
 	 * Mark all PCI regions associated with PCI device pci as
@@ -438,8 +439,7 @@ static int __maybe_unused ipc_pcie_resume_cb(struct device *dev)
 	return 0;
 }
 
-static DEFINE_RUNTIME_DEV_PM_OPS(iosm_ipc_pm, ipc_pcie_suspend_cb,
-				 ipc_pcie_resume_cb, NULL);
+static SIMPLE_DEV_PM_OPS(iosm_ipc_pm, ipc_pcie_suspend_cb, ipc_pcie_resume_cb);
 
 static struct pci_driver iosm_ipc_driver = {
 	.name = KBUILD_MODNAME,
@@ -450,7 +450,6 @@ static struct pci_driver iosm_ipc_driver = {
 	},
 	.id_table = iosm_ipc_ids,
 };
-module_pci_driver(iosm_ipc_driver);
 
 int ipc_pcie_addr_map(struct iosm_pcie *ipc_pcie, unsigned char *data,
 		      size_t size, dma_addr_t *mapping, int direction)
@@ -532,3 +531,56 @@ void ipc_pcie_kfree_skb(struct iosm_pcie *ipc_pcie, struct sk_buff *skb)
 	IPC_CB(skb)->mapping = 0;
 	dev_kfree_skb(skb);
 }
+
+static int pm_notify(struct notifier_block *nb, unsigned long mode, void *_unused)
+{
+	if (mode == PM_HIBERNATION_PREPARE || mode == PM_RESTORE_PREPARE) {
+		if (pci_registered) {
+			pci_unregister_driver(&iosm_ipc_driver);
+			pci_registered = false;
+		}
+	} else if (mode == PM_POST_HIBERNATION || mode == PM_POST_RESTORE) {
+		if (!pci_registered) {
+			int ret;
+
+			ret = pci_register_driver(&iosm_ipc_driver);
+			if (ret) {
+				pr_err(KBUILD_MODNAME ": unable to re-register PCI driver: %d\n",
+				       ret);
+			} else {
+				pci_registered = true;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static struct notifier_block pm_notifier = {
+	.notifier_call = pm_notify,
+};
+
+static int __init iosm_ipc_driver_init(void)
+{
+	int ret;
+
+	ret = pci_register_driver(&iosm_ipc_driver);
+	if (ret)
+		return ret;
+
+	pci_registered = true;
+
+	register_pm_notifier(&pm_notifier);
+
+	return 0;
+}
+module_init(iosm_ipc_driver_init);
+
+static void __exit iosm_ipc_driver_exit(void)
+{
+	unregister_pm_notifier(&pm_notifier);
+
+	if (pci_registered)
+		pci_unregister_driver(&iosm_ipc_driver);
+}
+module_exit(iosm_ipc_driver_exit);
diff --git a/drivers/net/wwan/iosm/iosm_ipc_pm.h b/drivers/net/wwan/iosm/iosm_ipc_pm.h
index e7c00f388cb0..5f14d7932af9 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_pm.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_pm.h
@@ -172,7 +172,7 @@ bool ipc_pm_prepare_host_sleep(struct iosm_pm *ipc_pm);
 bool ipc_pm_prepare_host_active(struct iosm_pm *ipc_pm);
 
 /**
- * ipc_pm_wait_for_device_active - Wait upto IPC_PM_ACTIVE_TIMEOUT_MS ms
+ * ipc_pm_wait_for_device_active - Wait up to IPC_PM_ACTIVE_TIMEOUT_MS ms
  *				   for the device to reach active state
  * @ipc_pm:	Pointer to power management component
  *
diff --git a/drivers/net/wwan/iosm/iosm_ipc_port.c b/drivers/net/wwan/iosm/iosm_ipc_port.c
index 2ba1ddca3945..5d5b4183e14a 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_port.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_port.c
@@ -3,8 +3,6 @@
  * Copyright (C) 2020-21 Intel Corporation.
  */
 
-#include <linux/pm_runtime.h>
-
 #include "iosm_ipc_chnl_cfg.h"
 #include "iosm_ipc_imem_ops.h"
 #include "iosm_ipc_port.h"
@@ -15,16 +13,12 @@ static int ipc_port_ctrl_start(struct wwan_port *port)
 	struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
 	int ret = 0;
 
-	pm_runtime_get_sync(ipc_port->ipc_imem->dev);
 	ipc_port->channel = ipc_imem_sys_port_open(ipc_port->ipc_imem,
 						   ipc_port->chl_id,
 						   IPC_HP_CDEV_OPEN);
 	if (!ipc_port->channel)
 		ret = -EIO;
 
-	pm_runtime_mark_last_busy(ipc_port->ipc_imem->dev);
-	pm_runtime_put_autosuspend(ipc_port->ipc_imem->dev);
-
 	return ret;
 }
 
@@ -33,24 +27,15 @@ static void ipc_port_ctrl_stop(struct wwan_port *port)
 {
 	struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
 
-	pm_runtime_get_sync(ipc_port->ipc_imem->dev);
 	ipc_imem_sys_port_close(ipc_port->ipc_imem, ipc_port->channel);
-	pm_runtime_mark_last_busy(ipc_port->ipc_imem->dev);
-	pm_runtime_put_autosuspend(ipc_port->ipc_imem->dev);
 }
 
 /* transfer control data to modem */
 static int ipc_port_ctrl_tx(struct wwan_port *port, struct sk_buff *skb)
 {
 	struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
-	int ret;
 
-	pm_runtime_get_sync(ipc_port->ipc_imem->dev);
-	ret = ipc_imem_sys_cdev_write(ipc_port, skb);
-	pm_runtime_mark_last_busy(ipc_port->ipc_imem->dev);
-	pm_runtime_put_autosuspend(ipc_port->ipc_imem->dev);
-
-	return ret;
+	return ipc_imem_sys_cdev_write(ipc_port, skb);
 }
 
 static const struct wwan_port_ops ipc_wwan_ctrl_ops = {
diff --git a/drivers/net/wwan/iosm/iosm_ipc_port.h b/drivers/net/wwan/iosm/iosm_ipc_port.h
index 11bc8ed21616..d33c52aebf66 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_port.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_port.h
@@ -18,7 +18,7 @@
  * @pcie:		PCIe component
  * @port_type:		WWAN port type
  * @channel:		Channel instance
- * @chl_id:		Channel Indentifier
+ * @chl_id:		Channel Identifier
  */
 struct iosm_cdev {
 	struct wwan_port *iosm_port;
diff --git a/drivers/net/wwan/iosm/iosm_ipc_trace.c b/drivers/net/wwan/iosm/iosm_ipc_trace.c
index 4368373797b6..9656254c1c6c 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_trace.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_trace.c
@@ -3,9 +3,7 @@
  * Copyright (C) 2020-2021 Intel Corporation.
  */
 
-#include <linux/pm_runtime.h>
 #include <linux/wwan.h>
-
 #include "iosm_ipc_trace.h"
 
 /* sub buffer size and number of sub buffer */
@@ -53,8 +51,7 @@ static int ipc_trace_remove_buf_file_handler(struct dentry *dentry)
 }
 
 static int ipc_trace_subbuf_start_handler(struct rchan_buf *buf, void *subbuf,
-					  void *prev_subbuf,
-					  size_t prev_padding)
+					  void *prev_subbuf)
 {
 	if (relay_buf_full(buf)) {
 		pr_err_ratelimited("Relay_buf full dropping traces");
@@ -99,8 +96,6 @@ static ssize_t ipc_trace_ctrl_file_write(struct file *filp,
 	if (ret)
 		return ret;
 
-	pm_runtime_get_sync(ipc_trace->ipc_imem->dev);
-
 	mutex_lock(&ipc_trace->trc_mutex);
 	if (val == TRACE_ENABLE && ipc_trace->mode != TRACE_ENABLE) {
 		ipc_trace->channel = ipc_imem_sys_port_open(ipc_trace->ipc_imem,
@@ -121,10 +116,6 @@ static ssize_t ipc_trace_ctrl_file_write(struct file *filp,
 	ret = count;
 unlock:
 	mutex_unlock(&ipc_trace->trc_mutex);
-
-	pm_runtime_mark_last_busy(ipc_trace->ipc_imem->dev);
-	pm_runtime_put_autosuspend(ipc_trace->ipc_imem->dev);
-
 	return ret;
 }
 
diff --git a/drivers/net/wwan/iosm/iosm_ipc_trace.h b/drivers/net/wwan/iosm/iosm_ipc_trace.h
index 5ebe7790585c..3e7c7f163e1d 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_trace.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_trace.h
@@ -29,7 +29,7 @@ enum trace_ctrl_mode {
  * @ipc_imem:		Imem instance
  * @dev:		Pointer to device struct
  * @channel:		Channel instance
- * @chl_id:		Channel Indentifier
+ * @chl_id:		Channel Identifier
  * @trc_mutex:		Mutex used for read and write mode
  * @mode:		Mode for enable and disable trace
  */
diff --git a/drivers/net/wwan/iosm/iosm_ipc_wwan.c b/drivers/net/wwan/iosm/iosm_ipc_wwan.c
index 93d17de08786..ff747fc79aaf 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_wwan.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_wwan.c
@@ -6,7 +6,6 @@
 #include <linux/etherdevice.h>
 #include <linux/if_arp.h>
 #include <linux/if_link.h>
-#include <linux/pm_runtime.h>
 #include <linux/rtnetlink.h>
 #include <linux/wwan.h>
 #include <net/pkt_sched.h>
@@ -52,13 +51,11 @@ static int ipc_wwan_link_open(struct net_device *netdev)
 	struct iosm_netdev_priv *priv = wwan_netdev_drvpriv(netdev);
 	struct iosm_wwan *ipc_wwan = priv->ipc_wwan;
 	int if_id = priv->if_id;
-	int ret = 0;
 
 	if (if_id < IP_MUX_SESSION_START ||
 	    if_id >= ARRAY_SIZE(ipc_wwan->sub_netlist))
 		return -EINVAL;
 
-	pm_runtime_get_sync(ipc_wwan->ipc_imem->dev);
 	/* get channel id */
 	priv->ch_id = ipc_imem_sys_wwan_open(ipc_wwan->ipc_imem, if_id);
 
@@ -66,8 +63,7 @@ static int ipc_wwan_link_open(struct net_device *netdev)
 		dev_err(ipc_wwan->dev,
 			"cannot connect wwan0 & id %d to the IPC mem layer",
 			if_id);
-		ret = -ENODEV;
-		goto err_out;
+		return -ENODEV;
 	}
 
 	/* enable tx path, DL data may follow */
@@ -76,11 +72,7 @@ static int ipc_wwan_link_open(struct net_device *netdev)
 	dev_dbg(ipc_wwan->dev, "Channel id %d allocated to if_id %d",
 		priv->ch_id, priv->if_id);
 
-err_out:
-	pm_runtime_mark_last_busy(ipc_wwan->ipc_imem->dev);
-	pm_runtime_put_autosuspend(ipc_wwan->ipc_imem->dev);
-
-	return ret;
+	return 0;
 }
 
 /* Bring-down the wwan net link */
@@ -90,12 +82,9 @@ static int ipc_wwan_link_stop(struct net_device *netdev)
 
 	netif_stop_queue(netdev);
 
-	pm_runtime_get_sync(priv->ipc_wwan->ipc_imem->dev);
 	ipc_imem_sys_wwan_close(priv->ipc_wwan->ipc_imem, priv->if_id,
 				priv->ch_id);
 	priv->ch_id = -1;
-	pm_runtime_mark_last_busy(priv->ipc_wwan->ipc_imem->dev);
-	pm_runtime_put_autosuspend(priv->ipc_wwan->ipc_imem->dev);
 
 	return 0;
 }
@@ -117,7 +106,6 @@ static netdev_tx_t ipc_wwan_link_transmit(struct sk_buff *skb,
 	    if_id >= ARRAY_SIZE(ipc_wwan->sub_netlist))
 		return -EINVAL;
 
-	pm_runtime_get(ipc_wwan->ipc_imem->dev);
 	/* Send the SKB to device for transmission */
 	ret = ipc_imem_sys_wwan_transmit(ipc_wwan->ipc_imem,
 					 if_id, priv->ch_id, skb);
@@ -131,14 +119,9 @@ static netdev_tx_t ipc_wwan_link_transmit(struct sk_buff *skb,
 		ret = NETDEV_TX_BUSY;
 		dev_err(ipc_wwan->dev, "unable to push packets");
 	} else {
-		pm_runtime_mark_last_busy(ipc_wwan->ipc_imem->dev);
-		pm_runtime_put_autosuspend(ipc_wwan->ipc_imem->dev);
 		goto exit;
 	}
 
-	pm_runtime_mark_last_busy(ipc_wwan->ipc_imem->dev);
-	pm_runtime_put_autosuspend(ipc_wwan->ipc_imem->dev);
-
 	return ret;
 
 exit: