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, 427 insertions, 0 deletions

diff --git a/sound/core/sound.c b/sound/core/sound.c
new file mode 100644
index 000000000..df5571d98
--- /dev/null
+++ b/sound/core/sound.c
@@ -0,0 +1,427 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Advanced Linux Sound Architecture
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/debugfs.h>
+#include <sound/core.h>
+#include <sound/minors.h>
+#include <sound/info.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+#include <linux/kmod.h>
+#include <linux/mutex.h>
+
+static int major = CONFIG_SND_MAJOR;
+int snd_major;
+EXPORT_SYMBOL(snd_major);
+
+static int cards_limit = 1;
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
+MODULE_DESCRIPTION("Advanced Linux Sound Architecture driver for soundcards.");
+MODULE_LICENSE("GPL");
+module_param(major, int, 0444);
+MODULE_PARM_DESC(major, "Major # for sound driver.");
+module_param(cards_limit, int, 0444);
+MODULE_PARM_DESC(cards_limit, "Count of auto-loadable soundcards.");
+MODULE_ALIAS_CHARDEV_MAJOR(CONFIG_SND_MAJOR);
+
+/* this one holds the actual max. card number currently available.
+ * as default, it's identical with cards_limit option.  when more
+ * modules are loaded manually, this limit number increases, too.
+ */
+int snd_ecards_limit;
+EXPORT_SYMBOL(snd_ecards_limit);
+
+#ifdef CONFIG_SND_DEBUG
+struct dentry *sound_debugfs_root;
+EXPORT_SYMBOL_GPL(sound_debugfs_root);
+#endif
+
+static struct snd_minor *snd_minors[SNDRV_OS_MINORS];
+static DEFINE_MUTEX(sound_mutex);
+
+#ifdef CONFIG_MODULES
+
+/**
+ * snd_request_card - try to load the card module
+ * @card: the card number
+ *
+ * Tries to load the module "snd-card-X" for the given card number
+ * via request_module.  Returns immediately if already loaded.
+ */
+void snd_request_card(int card)
+{
+	if (snd_card_locked(card))
+		return;
+	if (card < 0 || card >= cards_limit)
+		return;
+	request_module("snd-card-%i", card);
+}
+EXPORT_SYMBOL(snd_request_card);
+
+static void snd_request_other(int minor)
+{
+	char *str;
+
+	switch (minor) {
+	case SNDRV_MINOR_SEQUENCER:	str = "snd-seq";	break;
+	case SNDRV_MINOR_TIMER:		str = "snd-timer";	break;
+	default:			return;
+	}
+	request_module(str);
+}
+
+#endif	/* modular kernel */
+
+/**
+ * snd_lookup_minor_data - get user data of a registered device
+ * @minor: the minor number
+ * @type: device type (SNDRV_DEVICE_TYPE_XXX)
+ *
+ * Checks that a minor device with the specified type is registered, and returns
+ * its user data pointer.
+ *
+ * This function increments the reference counter of the card instance
+ * if an associated instance with the given minor number and type is found.
+ * The caller must call snd_card_unref() appropriately later.
+ *
+ * Return: The user data pointer if the specified device is found. %NULL
+ * otherwise.
+ */
+void *snd_lookup_minor_data(unsigned int minor, int type)
+{
+	struct snd_minor *mreg;
+	void *private_data;
+
+	if (minor >= ARRAY_SIZE(snd_minors))
+		return NULL;
+	mutex_lock(&sound_mutex);
+	mreg = snd_minors[minor];
+	if (mreg && mreg->type == type) {
+		private_data = mreg->private_data;
+		if (private_data && mreg->card_ptr)
+			get_device(&mreg->card_ptr->card_dev);
+	} else
+		private_data = NULL;
+	mutex_unlock(&sound_mutex);
+	return private_data;
+}
+EXPORT_SYMBOL(snd_lookup_minor_data);
+
+#ifdef CONFIG_MODULES
+static struct snd_minor *autoload_device(unsigned int minor)
+{
+	int dev;
+	mutex_unlock(&sound_mutex); /* release lock temporarily */
+	dev = SNDRV_MINOR_DEVICE(minor);
+	if (dev == SNDRV_MINOR_CONTROL) {
+		/* /dev/aloadC? */
+		int card = SNDRV_MINOR_CARD(minor);
+		struct snd_card *ref = snd_card_ref(card);
+		if (!ref)
+			snd_request_card(card);
+		else
+			snd_card_unref(ref);
+	} else if (dev == SNDRV_MINOR_GLOBAL) {
+		/* /dev/aloadSEQ */
+		snd_request_other(minor);
+	}
+	mutex_lock(&sound_mutex); /* reacuire lock */
+	return snd_minors[minor];
+}
+#else /* !CONFIG_MODULES */
+#define autoload_device(minor)	NULL
+#endif /* CONFIG_MODULES */
+
+static int snd_open(struct inode *inode, struct file *file)
+{
+	unsigned int minor = iminor(inode);
+	struct snd_minor *mptr = NULL;
+	const struct file_operations *new_fops;
+	int err = 0;
+
+	if (minor >= ARRAY_SIZE(snd_minors))
+		return -ENODEV;
+	mutex_lock(&sound_mutex);
+	mptr = snd_minors[minor];
+	if (mptr == NULL) {
+		mptr = autoload_device(minor);
+		if (!mptr) {
+			mutex_unlock(&sound_mutex);
+			return -ENODEV;
+		}
+	}
+	new_fops = fops_get(mptr->f_ops);
+	mutex_unlock(&sound_mutex);
+	if (!new_fops)
+		return -ENODEV;
+	replace_fops(file, new_fops);
+
+	if (file->f_op->open)
+		err = file->f_op->open(inode, file);
+	return err;
+}
+
+static const struct file_operations snd_fops =
+{
+	.owner =	THIS_MODULE,
+	.open =		snd_open,
+	.llseek =	noop_llseek,
+};
+
+#ifdef CONFIG_SND_DYNAMIC_MINORS
+static int snd_find_free_minor(int type, struct snd_card *card, int dev)
+{
+	int minor;
+
+	/* static minors for module auto loading */
+	if (type == SNDRV_DEVICE_TYPE_SEQUENCER)
+		return SNDRV_MINOR_SEQUENCER;
+	if (type == SNDRV_DEVICE_TYPE_TIMER)
+		return SNDRV_MINOR_TIMER;
+
+	for (minor = 0; minor < ARRAY_SIZE(snd_minors); ++minor) {
+		/* skip static minors still used for module auto loading */
+		if (SNDRV_MINOR_DEVICE(minor) == SNDRV_MINOR_CONTROL)
+			continue;
+		if (minor == SNDRV_MINOR_SEQUENCER ||
+		    minor == SNDRV_MINOR_TIMER)
+			continue;
+		if (!snd_minors[minor])
+			return minor;
+	}
+	return -EBUSY;
+}
+#else
+static int snd_find_free_minor(int type, struct snd_card *card, int dev)
+{
+	int minor;
+
+	switch (type) {
+	case SNDRV_DEVICE_TYPE_SEQUENCER:
+	case SNDRV_DEVICE_TYPE_TIMER:
+		minor = type;
+		break;
+	case SNDRV_DEVICE_TYPE_CONTROL:
+		if (snd_BUG_ON(!card))
+			return -EINVAL;
+		minor = SNDRV_MINOR(card->number, type);
+		break;
+	case SNDRV_DEVICE_TYPE_HWDEP:
+	case SNDRV_DEVICE_TYPE_RAWMIDI:
+	case SNDRV_DEVICE_TYPE_PCM_PLAYBACK:
+	case SNDRV_DEVICE_TYPE_PCM_CAPTURE:
+	case SNDRV_DEVICE_TYPE_COMPRESS:
+		if (snd_BUG_ON(!card))
+			return -EINVAL;
+		minor = SNDRV_MINOR(card->number, type + dev);
+		break;
+	default:
+		return -EINVAL;
+	}
+	if (snd_BUG_ON(minor < 0 || minor >= SNDRV_OS_MINORS))
+		return -EINVAL;
+	if (snd_minors[minor])
+		return -EBUSY;
+	return minor;
+}
+#endif
+
+/**
+ * snd_register_device - Register the ALSA device file for the card
+ * @type: the device type, SNDRV_DEVICE_TYPE_XXX
+ * @card: the card instance
+ * @dev: the device index
+ * @f_ops: the file operations
+ * @private_data: user pointer for f_ops->open()
+ * @device: the device to register
+ *
+ * Registers an ALSA device file for the given card.
+ * The operators have to be set in reg parameter.
+ *
+ * Return: Zero if successful, or a negative error code on failure.
+ */
+int snd_register_device(int type, struct snd_card *card, int dev,
+			const struct file_operations *f_ops,
+			void *private_data, struct device *device)
+{
+	int minor;
+	int err = 0;
+	struct snd_minor *preg;
+
+	if (snd_BUG_ON(!device))
+		return -EINVAL;
+
+	preg = kmalloc(sizeof *preg, GFP_KERNEL);
+	if (preg == NULL)
+		return -ENOMEM;
+	preg->type = type;
+	preg->card = card ? card->number : -1;
+	preg->device = dev;
+	preg->f_ops = f_ops;
+	preg->private_data = private_data;
+	preg->card_ptr = card;
+	mutex_lock(&sound_mutex);
+	minor = snd_find_free_minor(type, card, dev);
+	if (minor < 0) {
+		err = minor;
+		goto error;
+	}
+
+	preg->dev = device;
+	device->devt = MKDEV(major, minor);
+	err = device_add(device);
+	if (err < 0)
+		goto error;
+
+	snd_minors[minor] = preg;
+ error:
+	mutex_unlock(&sound_mutex);
+	if (err < 0)
+		kfree(preg);
+	return err;
+}
+EXPORT_SYMBOL(snd_register_device);
+
+/**
+ * snd_unregister_device - unregister the device on the given card
+ * @dev: the device instance
+ *
+ * Unregisters the device file already registered via
+ * snd_register_device().
+ *
+ * Return: Zero if successful, or a negative error code on failure.
+ */
+int snd_unregister_device(struct device *dev)
+{
+	int minor;
+	struct snd_minor *preg;
+
+	mutex_lock(&sound_mutex);
+	for (minor = 0; minor < ARRAY_SIZE(snd_minors); ++minor) {
+		preg = snd_minors[minor];
+		if (preg && preg->dev == dev) {
+			snd_minors[minor] = NULL;
+			device_del(dev);
+			kfree(preg);
+			break;
+		}
+	}
+	mutex_unlock(&sound_mutex);
+	if (minor >= ARRAY_SIZE(snd_minors))
+		return -ENOENT;
+	return 0;
+}
+EXPORT_SYMBOL(snd_unregister_device);
+
+#ifdef CONFIG_SND_PROC_FS
+/*
+ *  INFO PART
+ */
+static const char *snd_device_type_name(int type)
+{
+	switch (type) {
+	case SNDRV_DEVICE_TYPE_CONTROL:
+		return "control";
+	case SNDRV_DEVICE_TYPE_HWDEP:
+		return "hardware dependent";
+	case SNDRV_DEVICE_TYPE_RAWMIDI:
+		return "raw midi";
+	case SNDRV_DEVICE_TYPE_PCM_PLAYBACK:
+		return "digital audio playback";
+	case SNDRV_DEVICE_TYPE_PCM_CAPTURE:
+		return "digital audio capture";
+	case SNDRV_DEVICE_TYPE_SEQUENCER:
+		return "sequencer";
+	case SNDRV_DEVICE_TYPE_TIMER:
+		return "timer";
+	case SNDRV_DEVICE_TYPE_COMPRESS:
+		return "compress";
+	default:
+		return "?";
+	}
+}
+
+static void snd_minor_info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
+{
+	int minor;
+	struct snd_minor *mptr;
+
+	mutex_lock(&sound_mutex);
+	for (minor = 0; minor < SNDRV_OS_MINORS; ++minor) {
+		mptr = snd_minors[minor];
+		if (!mptr)
+			continue;
+		if (mptr->card >= 0) {
+			if (mptr->device >= 0)
+				snd_iprintf(buffer, "%3i: [%2i-%2i]: %s\n",
+					    minor, mptr->card, mptr->device,
+					    snd_device_type_name(mptr->type));
+			else
+				snd_iprintf(buffer, "%3i: [%2i]   : %s\n",
+					    minor, mptr->card,
+					    snd_device_type_name(mptr->type));
+		} else
+			snd_iprintf(buffer, "%3i:        : %s\n", minor,
+				    snd_device_type_name(mptr->type));
+	}
+	mutex_unlock(&sound_mutex);
+}
+
+int __init snd_minor_info_init(void)
+{
+	struct snd_info_entry *entry;
+
+	entry = snd_info_create_module_entry(THIS_MODULE, "devices", NULL);
+	if (!entry)
+		return -ENOMEM;
+	entry->c.text.read = snd_minor_info_read;
+	return snd_info_register(entry); /* freed in error path */
+}
+#endif /* CONFIG_SND_PROC_FS */
+
+/*
+ *  INIT PART
+ */
+
+static int __init alsa_sound_init(void)
+{
+	snd_major = major;
+	snd_ecards_limit = cards_limit;
+	if (register_chrdev(major, "alsa", &snd_fops)) {
+		pr_err("ALSA core: unable to register native major device number %d\n", major);
+		return -EIO;
+	}
+	if (snd_info_init() < 0) {
+		unregister_chrdev(major, "alsa");
+		return -ENOMEM;
+	}
+
+#ifdef CONFIG_SND_DEBUG
+	sound_debugfs_root = debugfs_create_dir("sound", NULL);
+#endif
+#ifndef MODULE
+	pr_info("Advanced Linux Sound Architecture Driver Initialized.\n");
+#endif
+	return 0;
+}
+
+static void __exit alsa_sound_exit(void)
+{
+#ifdef CONFIG_SND_DEBUG
+	debugfs_remove(sound_debugfs_root);
+#endif
+	snd_info_done();
+	unregister_chrdev(major, "alsa");
+}
+
+subsys_initcall(alsa_sound_init);
+module_exit(alsa_sound_exit);