Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 464 insertions, 0 deletions

diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
new file mode 100644
index 000000000..16d1861e9
--- /dev/null
+++ b/drivers/mfd/mfd-core.c
@@ -0,0 +1,464 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * drivers/mfd/mfd-core.c
+ *
+ * core MFD support
+ * Copyright (c) 2006 Ian Molton
+ * Copyright (c) 2007,2008 Dmitry Baryshkov
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <linux/list.h>
+#include <linux/property.h>
+#include <linux/mfd/core.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/regulator/consumer.h>
+
+static LIST_HEAD(mfd_of_node_list);
+
+struct mfd_of_node_entry {
+	struct list_head list;
+	struct device *dev;
+	struct device_node *np;
+};
+
+static struct device_type mfd_dev_type = {
+	.name	= "mfd_device",
+};
+
+int mfd_cell_enable(struct platform_device *pdev)
+{
+	const struct mfd_cell *cell = mfd_get_cell(pdev);
+
+	if (!cell->enable) {
+		dev_dbg(&pdev->dev, "No .enable() call-back registered\n");
+		return 0;
+	}
+
+	return cell->enable(pdev);
+}
+EXPORT_SYMBOL(mfd_cell_enable);
+
+int mfd_cell_disable(struct platform_device *pdev)
+{
+	const struct mfd_cell *cell = mfd_get_cell(pdev);
+
+	if (!cell->disable) {
+		dev_dbg(&pdev->dev, "No .disable() call-back registered\n");
+		return 0;
+	}
+
+	return cell->disable(pdev);
+}
+EXPORT_SYMBOL(mfd_cell_disable);
+
+#if IS_ENABLED(CONFIG_ACPI)
+struct match_ids_walk_data {
+	struct acpi_device_id *ids;
+	struct acpi_device *adev;
+};
+
+static int match_device_ids(struct acpi_device *adev, void *data)
+{
+	struct match_ids_walk_data *wd = data;
+
+	if (!acpi_match_device_ids(adev, wd->ids)) {
+		wd->adev = adev;
+		return 1;
+	}
+
+	return 0;
+}
+
+static void mfd_acpi_add_device(const struct mfd_cell *cell,
+				struct platform_device *pdev)
+{
+	const struct mfd_cell_acpi_match *match = cell->acpi_match;
+	struct acpi_device *adev = NULL;
+	struct acpi_device *parent;
+
+	parent = ACPI_COMPANION(pdev->dev.parent);
+	if (!parent)
+		return;
+
+	/*
+	 * MFD child device gets its ACPI handle either from the ACPI device
+	 * directly under the parent that matches the either _HID or _CID, or
+	 * _ADR or it will use the parent handle if is no ID is given.
+	 *
+	 * Note that use of _ADR is a grey area in the ACPI specification,
+	 * though at least Intel Galileo Gen 2 is using it to distinguish
+	 * the children devices.
+	 */
+	if (match) {
+		if (match->pnpid) {
+			struct acpi_device_id ids[2] = {};
+			struct match_ids_walk_data wd = {
+				.adev = NULL,
+				.ids = ids,
+			};
+
+			strscpy(ids[0].id, match->pnpid, sizeof(ids[0].id));
+			acpi_dev_for_each_child(parent, match_device_ids, &wd);
+			adev = wd.adev;
+		} else {
+			adev = acpi_find_child_device(parent, match->adr, false);
+		}
+	}
+
+	ACPI_COMPANION_SET(&pdev->dev, adev ?: parent);
+}
+#else
+static inline void mfd_acpi_add_device(const struct mfd_cell *cell,
+				       struct platform_device *pdev)
+{
+}
+#endif
+
+static int mfd_match_of_node_to_dev(struct platform_device *pdev,
+				    struct device_node *np,
+				    const struct mfd_cell *cell)
+{
+#if IS_ENABLED(CONFIG_OF)
+	struct mfd_of_node_entry *of_entry;
+	const __be32 *reg;
+	u64 of_node_addr;
+
+	/* Skip if OF node has previously been allocated to a device */
+	list_for_each_entry(of_entry, &mfd_of_node_list, list)
+		if (of_entry->np == np)
+			return -EAGAIN;
+
+	if (!cell->use_of_reg)
+		/* No of_reg defined - allocate first free compatible match */
+		goto allocate_of_node;
+
+	/* We only care about each node's first defined address */
+	reg = of_get_address(np, 0, NULL, NULL);
+	if (!reg)
+		/* OF node does not contatin a 'reg' property to match to */
+		return -EAGAIN;
+
+	of_node_addr = of_read_number(reg, of_n_addr_cells(np));
+
+	if (cell->of_reg != of_node_addr)
+		/* No match */
+		return -EAGAIN;
+
+allocate_of_node:
+	of_entry = kzalloc(sizeof(*of_entry), GFP_KERNEL);
+	if (!of_entry)
+		return -ENOMEM;
+
+	of_entry->dev = &pdev->dev;
+	of_entry->np = np;
+	list_add_tail(&of_entry->list, &mfd_of_node_list);
+
+	pdev->dev.of_node = np;
+	pdev->dev.fwnode = &np->fwnode;
+#endif
+	return 0;
+}
+
+static int mfd_add_device(struct device *parent, int id,
+			  const struct mfd_cell *cell,
+			  struct resource *mem_base,
+			  int irq_base, struct irq_domain *domain)
+{
+	struct resource *res;
+	struct platform_device *pdev;
+	struct device_node *np = NULL;
+	struct mfd_of_node_entry *of_entry, *tmp;
+	int ret = -ENOMEM;
+	int platform_id;
+	int r;
+
+	if (id == PLATFORM_DEVID_AUTO)
+		platform_id = id;
+	else
+		platform_id = id + cell->id;
+
+	pdev = platform_device_alloc(cell->name, platform_id);
+	if (!pdev)
+		goto fail_alloc;
+
+	pdev->mfd_cell = kmemdup(cell, sizeof(*cell), GFP_KERNEL);
+	if (!pdev->mfd_cell)
+		goto fail_device;
+
+	res = kcalloc(cell->num_resources, sizeof(*res), GFP_KERNEL);
+	if (!res)
+		goto fail_device;
+
+	pdev->dev.parent = parent;
+	pdev->dev.type = &mfd_dev_type;
+	pdev->dev.dma_mask = parent->dma_mask;
+	pdev->dev.dma_parms = parent->dma_parms;
+	pdev->dev.coherent_dma_mask = parent->coherent_dma_mask;
+
+	ret = regulator_bulk_register_supply_alias(
+			&pdev->dev, cell->parent_supplies,
+			parent, cell->parent_supplies,
+			cell->num_parent_supplies);
+	if (ret < 0)
+		goto fail_res;
+
+	if (IS_ENABLED(CONFIG_OF) && parent->of_node && cell->of_compatible) {
+		for_each_child_of_node(parent->of_node, np) {
+			if (of_device_is_compatible(np, cell->of_compatible)) {
+				/* Ignore 'disabled' devices error free */
+				if (!of_device_is_available(np)) {
+					of_node_put(np);
+					ret = 0;
+					goto fail_alias;
+				}
+
+				ret = mfd_match_of_node_to_dev(pdev, np, cell);
+				if (ret == -EAGAIN)
+					continue;
+				of_node_put(np);
+				if (ret)
+					goto fail_alias;
+
+				break;
+			}
+		}
+
+		if (!pdev->dev.of_node)
+			pr_warn("%s: Failed to locate of_node [id: %d]\n",
+				cell->name, platform_id);
+	}
+
+	mfd_acpi_add_device(cell, pdev);
+
+	if (cell->pdata_size) {
+		ret = platform_device_add_data(pdev,
+					cell->platform_data, cell->pdata_size);
+		if (ret)
+			goto fail_of_entry;
+	}
+
+	if (cell->swnode) {
+		ret = device_add_software_node(&pdev->dev, cell->swnode);
+		if (ret)
+			goto fail_of_entry;
+	}
+
+	for (r = 0; r < cell->num_resources; r++) {
+		res[r].name = cell->resources[r].name;
+		res[r].flags = cell->resources[r].flags;
+
+		/* Find out base to use */
+		if ((cell->resources[r].flags & IORESOURCE_MEM) && mem_base) {
+			res[r].parent = mem_base;
+			res[r].start = mem_base->start +
+				cell->resources[r].start;
+			res[r].end = mem_base->start +
+				cell->resources[r].end;
+		} else if (cell->resources[r].flags & IORESOURCE_IRQ) {
+			if (domain) {
+				/* Unable to create mappings for IRQ ranges. */
+				WARN_ON(cell->resources[r].start !=
+					cell->resources[r].end);
+				res[r].start = res[r].end = irq_create_mapping(
+					domain, cell->resources[r].start);
+			} else {
+				res[r].start = irq_base +
+					cell->resources[r].start;
+				res[r].end   = irq_base +
+					cell->resources[r].end;
+			}
+		} else {
+			res[r].parent = cell->resources[r].parent;
+			res[r].start = cell->resources[r].start;
+			res[r].end   = cell->resources[r].end;
+		}
+
+		if (!cell->ignore_resource_conflicts) {
+			if (has_acpi_companion(&pdev->dev)) {
+				ret = acpi_check_resource_conflict(&res[r]);
+				if (ret)
+					goto fail_res_conflict;
+			}
+		}
+	}
+
+	ret = platform_device_add_resources(pdev, res, cell->num_resources);
+	if (ret)
+		goto fail_res_conflict;
+
+	ret = platform_device_add(pdev);
+	if (ret)
+		goto fail_res_conflict;
+
+	if (cell->pm_runtime_no_callbacks)
+		pm_runtime_no_callbacks(&pdev->dev);
+
+	kfree(res);
+
+	return 0;
+
+fail_res_conflict:
+	if (cell->swnode)
+		device_remove_software_node(&pdev->dev);
+fail_of_entry:
+	list_for_each_entry_safe(of_entry, tmp, &mfd_of_node_list, list)
+		if (of_entry->dev == &pdev->dev) {
+			list_del(&of_entry->list);
+			kfree(of_entry);
+		}
+fail_alias:
+	regulator_bulk_unregister_supply_alias(&pdev->dev,
+					       cell->parent_supplies,
+					       cell->num_parent_supplies);
+fail_res:
+	kfree(res);
+fail_device:
+	platform_device_put(pdev);
+fail_alloc:
+	return ret;
+}
+
+/**
+ * mfd_add_devices - register child devices
+ *
+ * @parent:	Pointer to parent device.
+ * @id:		Can be PLATFORM_DEVID_AUTO to let the Platform API take care
+ *		of device numbering, or will be added to a device's cell_id.
+ * @cells:	Array of (struct mfd_cell)s describing child devices.
+ * @n_devs:	Number of child devices to register.
+ * @mem_base:	Parent register range resource for child devices.
+ * @irq_base:	Base of the range of virtual interrupt numbers allocated for
+ *		this MFD device. Unused if @domain is specified.
+ * @domain:	Interrupt domain to create mappings for hardware interrupts.
+ */
+int mfd_add_devices(struct device *parent, int id,
+		    const struct mfd_cell *cells, int n_devs,
+		    struct resource *mem_base,
+		    int irq_base, struct irq_domain *domain)
+{
+	int i;
+	int ret;
+
+	for (i = 0; i < n_devs; i++) {
+		ret = mfd_add_device(parent, id, cells + i, mem_base,
+				     irq_base, domain);
+		if (ret)
+			goto fail;
+	}
+
+	return 0;
+
+fail:
+	if (i)
+		mfd_remove_devices(parent);
+
+	return ret;
+}
+EXPORT_SYMBOL(mfd_add_devices);
+
+static int mfd_remove_devices_fn(struct device *dev, void *data)
+{
+	struct platform_device *pdev;
+	const struct mfd_cell *cell;
+	struct mfd_of_node_entry *of_entry, *tmp;
+	int *level = data;
+
+	if (dev->type != &mfd_dev_type)
+		return 0;
+
+	pdev = to_platform_device(dev);
+	cell = mfd_get_cell(pdev);
+
+	if (level && cell->level > *level)
+		return 0;
+
+	if (cell->swnode)
+		device_remove_software_node(&pdev->dev);
+
+	list_for_each_entry_safe(of_entry, tmp, &mfd_of_node_list, list)
+		if (of_entry->dev == &pdev->dev) {
+			list_del(&of_entry->list);
+			kfree(of_entry);
+		}
+
+	regulator_bulk_unregister_supply_alias(dev, cell->parent_supplies,
+					       cell->num_parent_supplies);
+
+	platform_device_unregister(pdev);
+	return 0;
+}
+
+void mfd_remove_devices_late(struct device *parent)
+{
+	int level = MFD_DEP_LEVEL_HIGH;
+
+	device_for_each_child_reverse(parent, &level, mfd_remove_devices_fn);
+}
+EXPORT_SYMBOL(mfd_remove_devices_late);
+
+void mfd_remove_devices(struct device *parent)
+{
+	int level = MFD_DEP_LEVEL_NORMAL;
+
+	device_for_each_child_reverse(parent, &level, mfd_remove_devices_fn);
+}
+EXPORT_SYMBOL(mfd_remove_devices);
+
+static void devm_mfd_dev_release(struct device *dev, void *res)
+{
+	mfd_remove_devices(dev);
+}
+
+/**
+ * devm_mfd_add_devices - Resource managed version of mfd_add_devices()
+ *
+ * Returns 0 on success or an appropriate negative error number on failure.
+ * All child-devices of the MFD will automatically be removed when it gets
+ * unbinded.
+ *
+ * @dev:	Pointer to parent device.
+ * @id:		Can be PLATFORM_DEVID_AUTO to let the Platform API take care
+ *		of device numbering, or will be added to a device's cell_id.
+ * @cells:	Array of (struct mfd_cell)s describing child devices.
+ * @n_devs:	Number of child devices to register.
+ * @mem_base:	Parent register range resource for child devices.
+ * @irq_base:	Base of the range of virtual interrupt numbers allocated for
+ *		this MFD device. Unused if @domain is specified.
+ * @domain:	Interrupt domain to create mappings for hardware interrupts.
+ */
+int devm_mfd_add_devices(struct device *dev, int id,
+			 const struct mfd_cell *cells, int n_devs,
+			 struct resource *mem_base,
+			 int irq_base, struct irq_domain *domain)
+{
+	struct device **ptr;
+	int ret;
+
+	ptr = devres_alloc(devm_mfd_dev_release, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return -ENOMEM;
+
+	ret = mfd_add_devices(dev, id, cells, n_devs, mem_base,
+			      irq_base, domain);
+	if (ret < 0) {
+		devres_free(ptr);
+		return ret;
+	}
+
+	*ptr = dev;
+	devres_add(dev, ptr);
+
+	return ret;
+}
+EXPORT_SYMBOL(devm_mfd_add_devices);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Ian Molton, Dmitry Baryshkov");