Merge tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking changes from Jakub Kicinski:
 "WiFi 7 and sendpage changes are the biggest pieces of work for this
  release. The latter will definitely require fixes but I think that we
  got it to a reasonable point.

  Core:

   - Rework the sendpage & splice implementations

     Instead of feeding data into sockets page by page extend sendmsg
     handlers to support taking a reference on the data, controlled by a
     new flag called MSG_SPLICE_PAGES

     Rework the handling of unexpected-end-of-file to invoke an
     additional callback instead of trying to predict what the right
     combination of MORE/NOTLAST flags is

     Remove the MSG_SENDPAGE_NOTLAST flag completely

   - Implement SCM_PIDFD, a new type of CMSG type analogous to
     SCM_CREDENTIALS, but it contains pidfd instead of plain pid

   - Enable socket busy polling with CONFIG_RT

   - Improve reliability and efficiency of reporting for ref_tracker

   - Auto-generate a user space C library for various Netlink families

  Protocols:

   - Allow TCP to shrink the advertised window when necessary, prevent
     sk_rcvbuf auto-tuning from growing the window all the way up to
     tcp_rmem[2]

   - Use per-VMA locking for "page-flipping" TCP receive zerocopy

   - Prepare TCP for device-to-device data transfers, by making sure
     that payloads are always attached to skbs as page frags

   - Make the backoff time for the first N TCP SYN retransmissions
     linear. Exponential backoff is unnecessarily conservative

   - Create a new MPTCP getsockopt to retrieve all info
     (MPTCP_FULL_INFO)

   - Avoid waking up applications using TLS sockets until we have a full
     record

   - Allow using kernel memory for protocol ioctl callbacks, paving the
     way to issuing ioctls over io_uring

   - Add nolocalbypass option to VxLAN, forcing packets to be fully
     encapsulated even if they are destined for a local IP address

   - Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
     in-kernel ECMP implementation (e.g. Open vSwitch) select the same
     link for all packets. Support L4 symmetric hashing in Open vSwitch

   - PPPoE: make number of hash bits configurable

   - Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
     (ipconfig)

   - Add layer 2 miss indication and filtering, allowing higher layers
     (e.g. ACL filters) to make forwarding decisions based on whether
     packet matched forwarding state in lower devices (bridge)

   - Support matching on Connectivity Fault Management (CFM) packets

   - Hide the "link becomes ready" IPv6 messages by demoting their
     printk level to debug

   - HSR: don't enable promiscuous mode if device offloads the proto

   - Support active scanning in IEEE 802.15.4

   - Continue work on Multi-Link Operation for WiFi 7

  BPF:

   - Add precision propagation for subprogs and callbacks. This allows
     maintaining verification efficiency when subprograms are used, or
     in fact passing the verifier at all for complex programs,
     especially those using open-coded iterators

   - Improve BPF's {g,s}setsockopt() length handling. Previously BPF
     assumed the length is always equal to the amount of written data.
     But some protos allow passing a NULL buffer to discover what the
     output buffer *should* be, without writing anything

   - Accept dynptr memory as memory arguments passed to helpers

   - Add routing table ID to bpf_fib_lookup BPF helper

   - Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands

   - Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
     maps as read-only)

   - Show target_{obj,btf}_id in tracing link fdinfo

   - Addition of several new kfuncs (most of the names are
     self-explanatory):
      - Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
        bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
        and bpf_dynptr_clone().
      - bpf_task_under_cgroup()
      - bpf_sock_destroy() - force closing sockets
      - bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs

  Netfilter:

   - Relax set/map validation checks in nf_tables. Allow checking
     presence of an entry in a map without using the value

   - Increase ip_vs_conn_tab_bits range for 64BIT builds

   - Allow updating size of a set

   - Improve NAT tuple selection when connection is closing

  Driver API:

   - Integrate netdev with LED subsystem, to allow configuring HW
     "offloaded" blinking of LEDs based on link state and activity
     (i.e. packets coming in and out)

   - Support configuring rate selection pins of SFP modules

   - Factor Clause 73 auto-negotiation code out of the drivers, provide
     common helper routines

   - Add more fool-proof helpers for managing lifetime of MDIO devices
     associated with the PCS layer

   - Allow drivers to report advanced statistics related to Time Aware
     scheduler offload (taprio)

   - Allow opting out of VF statistics in link dump, to allow more VFs
     to fit into the message

   - Split devlink instance and devlink port operations

  New hardware / drivers:

   - Ethernet:
      - Synopsys EMAC4 IP support (stmmac)
      - Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
      - Marvell 88E6250 7 port switches
      - Microchip LAN8650/1 Rev.B0 PHYs
      - MediaTek MT7981/MT7988 built-in 1GE PHY driver

   - WiFi:
      - Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
      - Realtek RTL8723DS (SDIO variant)
      - Realtek RTL8851BE

   - CAN:
      - Fintek F81604

  Drivers:

   - Ethernet NICs:
      - Intel (100G, ice):
         - support dynamic interrupt allocation
         - use meta data match instead of VF MAC addr on slow-path
      - nVidia/Mellanox:
         - extend link aggregation to handle 4, rather than just 2 ports
         - spawn sub-functions without any features by default
      - OcteonTX2:
         - support HTB (Tx scheduling/QoS) offload
         - make RSS hash generation configurable
         - support selecting Rx queue using TC filters
      - Wangxun (ngbe/txgbe):
         - add basic Tx/Rx packet offloads
         - add phylink support (SFP/PCS control)
      - Freescale/NXP (enetc):
         - report TAPRIO packet statistics
      - Solarflare/AMD:
         - support matching on IP ToS and UDP source port of outer
           header
         - VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
         - add devlink dev info support for EF10

   - Virtual NICs:
      - Microsoft vNIC:
         - size the Rx indirection table based on requested
           configuration
         - support VLAN tagging
      - Amazon vNIC:
         - try to reuse Rx buffers if not fully consumed, useful for ARM
           servers running with 16kB pages
      - Google vNIC:
         - support TCP segmentation of >64kB frames

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - enable USXGMII (88E6191X)
      - Microchip:
         - lan966x: add support for Egress Stage 0 ACL engine
         - lan966x: support mapping packet priority to internal switch
           priority (based on PCP or DSCP)

   - Ethernet PHYs:
      - Broadcom PHYs:
         - support for Wake-on-LAN for BCM54210E/B50212E
         - report LPI counter
      - Microsemi PHYs: support RGMII delay configuration (VSC85xx)
      - Micrel PHYs: receive timestamp in the frame (LAN8841)
      - Realtek PHYs: support optional external PHY clock
      - Altera TSE PCS: merge the driver into Lynx PCS which it is a
        variant of

   - CAN: Kvaser PCIEcan:
      - support packet timestamping

   - WiFi:
      - Intel (iwlwifi):
         - major update for new firmware and Multi-Link Operation (MLO)
         - configuration rework to drop test devices and split the
           different families
         - support for segmented PNVM images and power tables
         - new vendor entries for PPAG (platform antenna gain) feature
      - Qualcomm 802.11ax (ath11k):
         - Multiple Basic Service Set Identifier (MBSSID) and Enhanced
           MBSSID Advertisement (EMA) support in AP mode
         - support factory test mode
      - RealTek (rtw89):
         - add RSSI based antenna diversity
         - support U-NII-4 channels on 5 GHz band
      - RealTek (rtl8xxxu):
         - AP mode support for 8188f
         - support USB RX aggregation for the newer chips"

* tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1602 commits)
  net: scm: introduce and use scm_recv_unix helper
  af_unix: Skip SCM_PIDFD if scm->pid is NULL.
  net: lan743x: Simplify comparison
  netlink: Add __sock_i_ino() for __netlink_diag_dump().
  net: dsa: avoid suspicious RCU usage for synced VLAN-aware MAC addresses
  Revert "af_unix: Call scm_recv() only after scm_set_cred()."
  phylink: ReST-ify the phylink_pcs_neg_mode() kdoc
  libceph: Partially revert changes to support MSG_SPLICE_PAGES
  net: phy: mscc: fix packet loss due to RGMII delays
  net: mana: use vmalloc_array and vcalloc
  net: enetc: use vmalloc_array and vcalloc
  ionic: use vmalloc_array and vcalloc
  pds_core: use vmalloc_array and vcalloc
  gve: use vmalloc_array and vcalloc
  octeon_ep: use vmalloc_array and vcalloc
  net: usb: qmi_wwan: add u-blox 0x1312 composition
  perf trace: fix MSG_SPLICE_PAGES build error
  ipvlan: Fix return value of ipvlan_queue_xmit()
  netfilter: nf_tables: fix underflow in chain reference counter
  netfilter: nf_tables: unbind non-anonymous set if rule construction fails
  ...

7 files changed, 65 insertions, 23 deletions

diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem.c b/drivers/net/wwan/iosm/iosm_ipc_imem.c
index 829515a601b3..635301d677e1 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_imem.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_imem.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/delay.h>
+#include <linux/pm_runtime.h>
 
 #include "iosm_ipc_chnl_cfg.h"
 #include "iosm_ipc_devlink.h"
@@ -631,6 +632,11 @@ 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:
@@ -1234,6 +1240,7 @@ 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);
@@ -1419,6 +1426,16 @@ 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 e700dc8bfe0a..0144b45e2afb 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_imem.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_imem.h
@@ -103,6 +103,8 @@ 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,
@@ -140,17 +142,6 @@ enum ipc_channel_state {
 	IMEM_CHANNEL_CLOSING,
 };
 
-/* Time Unit */
-enum ipc_time_unit {
-	IPC_SEC = 0,
-	IPC_MILLI_SEC = 1,
-	IPC_MICRO_SEC = 2,
-	IPC_NANO_SEC = 3,
-	IPC_PICO_SEC = 4,
-	IPC_FEMTO_SEC = 5,
-	IPC_ATTO_SEC = 6,
-};
-
 /**
  * enum ipc_ctype - Enum defining supported channel type needed for control
  *		    /IP traffic.
@@ -204,7 +195,6 @@ enum ipc_hp_identifier {
  * @pipe_nr:			Pipe identification number
  * @irq:			Interrupt vector
  * @dir:			Direction of data stream in pipe
- * @td_tag:			Unique tag of the buffer queued
  * @buf_size:			Buffer size (in bytes) for preallocated
  *				buffers (for DL pipes)
  * @nr_of_queued_entries:	Aueued number of entries
@@ -224,7 +214,6 @@ struct ipc_pipe {
 	u32 pipe_nr;
 	u32 irq;
 	enum ipc_mem_pipe_dir dir;
-	u32 td_tag;
 	u32 buf_size;
 	u16 nr_of_queued_entries;
 	u8 is_open:1;
diff --git a/drivers/net/wwan/iosm/iosm_ipc_mux.h b/drivers/net/wwan/iosm/iosm_ipc_mux.h
index 9968bb885c1f..17ca8d1f9397 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_mux.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_mux.h
@@ -333,9 +333,7 @@ struct mux_acb {
  * @wwan_q_offset:	This will hold the offset of the given instance
  *			Useful while passing or receiving packets from
  *			wwan/imem layer.
- * @adb_finish_timer:	Timer for forcefully finishing the ADB
  * @acb_tx_sequence_nr: Sequence number for the ACB header.
- * @params:		user configurable parameters
  * @adb_tx_sequence_nr: Sequence number for ADB header
  * @acc_adb_size:       Statistic data for logging
  * @acc_payload_size:   Statistic data for logging
@@ -367,9 +365,7 @@ struct iosm_mux {
 	long long ul_data_pend_bytes;
 	struct mux_acb acb;
 	int wwan_q_offset;
-	struct hrtimer adb_finish_timer;
 	u16 acb_tx_sequence_nr;
-	struct ipc_params *params;
 	u16 adb_tx_sequence_nr;
 	unsigned long long acc_adb_size;
 	unsigned long long acc_payload_size;
diff --git a/drivers/net/wwan/iosm/iosm_ipc_pcie.c b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
index 04517bd3325a..3a259c9abefd 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_pcie.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
@@ -6,6 +6,7 @@
 #include <linux/acpi.h>
 #include <linux/bitfield.h>
 #include <linux/module.h>
+#include <linux/pm_runtime.h>
 #include <net/rtnetlink.h>
 
 #include "iosm_ipc_imem.h"
@@ -437,7 +438,8 @@ static int __maybe_unused ipc_pcie_resume_cb(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(iosm_ipc_pm, ipc_pcie_suspend_cb, ipc_pcie_resume_cb);
+static DEFINE_RUNTIME_DEV_PM_OPS(iosm_ipc_pm, ipc_pcie_suspend_cb,
+				 ipc_pcie_resume_cb, NULL);
 
 static struct pci_driver iosm_ipc_driver = {
 	.name = KBUILD_MODNAME,
diff --git a/drivers/net/wwan/iosm/iosm_ipc_port.c b/drivers/net/wwan/iosm/iosm_ipc_port.c
index 5d5b4183e14a..2ba1ddca3945 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_port.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_port.c
@@ -3,6 +3,8 @@
  * 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"
@@ -13,12 +15,16 @@ 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;
 }
 
@@ -27,15 +33,24 @@ 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;
 
-	return ipc_imem_sys_cdev_write(ipc_port, skb);
+	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;
 }
 
 static const struct wwan_port_ops ipc_wwan_ctrl_ops = {
diff --git a/drivers/net/wwan/iosm/iosm_ipc_trace.c b/drivers/net/wwan/iosm/iosm_ipc_trace.c
index eeecfa3d10c5..4368373797b6 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_trace.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_trace.c
@@ -3,7 +3,9 @@
  * 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 */
@@ -97,6 +99,8 @@ 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,
@@ -117,6 +121,10 @@ 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_wwan.c b/drivers/net/wwan/iosm/iosm_ipc_wwan.c
index 4c9022a93e01..93d17de08786 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_wwan.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_wwan.c
@@ -6,6 +6,7 @@
 #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>
@@ -18,8 +19,6 @@
 #define IOSM_IP_TYPE_IPV4 0x40
 #define IOSM_IP_TYPE_IPV6 0x60
 
-#define IOSM_IF_ID_PAYLOAD 2
-
 /**
  * struct iosm_netdev_priv - netdev WWAN driver specific private data
  * @ipc_wwan:	Pointer to iosm_wwan struct
@@ -53,11 +52,13 @@ 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);
 
@@ -65,7 +66,8 @@ 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);
-		return -ENODEV;
+		ret = -ENODEV;
+		goto err_out;
 	}
 
 	/* enable tx path, DL data may follow */
@@ -74,7 +76,11 @@ 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);
 
-	return 0;
+err_out:
+	pm_runtime_mark_last_busy(ipc_wwan->ipc_imem->dev);
+	pm_runtime_put_autosuspend(ipc_wwan->ipc_imem->dev);
+
+	return ret;
 }
 
 /* Bring-down the wwan net link */
@@ -84,9 +90,12 @@ 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;
 }
@@ -108,6 +117,7 @@ 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);
@@ -121,9 +131,14 @@ 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: