From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- sound/core/hwdep.c | 545 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 545 insertions(+) create mode 100644 sound/core/hwdep.c (limited to 'sound/core/hwdep.c') diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c new file mode 100644 index 000000000..e95fa275c --- /dev/null +++ b/sound/core/hwdep.c @@ -0,0 +1,545 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Hardware dependent layer + * Copyright (c) by Jaroslav Kysela + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +MODULE_AUTHOR("Jaroslav Kysela "); +MODULE_DESCRIPTION("Hardware dependent layer"); +MODULE_LICENSE("GPL"); + +static LIST_HEAD(snd_hwdep_devices); +static DEFINE_MUTEX(register_mutex); + +static int snd_hwdep_dev_free(struct snd_device *device); +static int snd_hwdep_dev_register(struct snd_device *device); +static int snd_hwdep_dev_disconnect(struct snd_device *device); + + +static struct snd_hwdep *snd_hwdep_search(struct snd_card *card, int device) +{ + struct snd_hwdep *hwdep; + + list_for_each_entry(hwdep, &snd_hwdep_devices, list) + if (hwdep->card == card && hwdep->device == device) + return hwdep; + return NULL; +} + +static loff_t snd_hwdep_llseek(struct file * file, loff_t offset, int orig) +{ + struct snd_hwdep *hw = file->private_data; + if (hw->ops.llseek) + return hw->ops.llseek(hw, file, offset, orig); + return -ENXIO; +} + +static ssize_t snd_hwdep_read(struct file * file, char __user *buf, + size_t count, loff_t *offset) +{ + struct snd_hwdep *hw = file->private_data; + if (hw->ops.read) + return hw->ops.read(hw, buf, count, offset); + return -ENXIO; +} + +static ssize_t snd_hwdep_write(struct file * file, const char __user *buf, + size_t count, loff_t *offset) +{ + struct snd_hwdep *hw = file->private_data; + if (hw->ops.write) + return hw->ops.write(hw, buf, count, offset); + return -ENXIO; +} + +static int snd_hwdep_open(struct inode *inode, struct file * file) +{ + int major = imajor(inode); + struct snd_hwdep *hw; + int err; + wait_queue_entry_t wait; + + if (major == snd_major) { + hw = snd_lookup_minor_data(iminor(inode), + SNDRV_DEVICE_TYPE_HWDEP); +#ifdef CONFIG_SND_OSSEMUL + } else if (major == SOUND_MAJOR) { + hw = snd_lookup_oss_minor_data(iminor(inode), + SNDRV_OSS_DEVICE_TYPE_DMFM); +#endif + } else + return -ENXIO; + if (hw == NULL) + return -ENODEV; + + if (!try_module_get(hw->card->module)) { + snd_card_unref(hw->card); + return -EFAULT; + } + + init_waitqueue_entry(&wait, current); + add_wait_queue(&hw->open_wait, &wait); + mutex_lock(&hw->open_mutex); + while (1) { + if (hw->exclusive && hw->used > 0) { + err = -EBUSY; + break; + } + if (!hw->ops.open) { + err = 0; + break; + } + err = hw->ops.open(hw, file); + if (err >= 0) + break; + if (err == -EAGAIN) { + if (file->f_flags & O_NONBLOCK) { + err = -EBUSY; + break; + } + } else + break; + set_current_state(TASK_INTERRUPTIBLE); + mutex_unlock(&hw->open_mutex); + schedule(); + mutex_lock(&hw->open_mutex); + if (hw->card->shutdown) { + err = -ENODEV; + break; + } + if (signal_pending(current)) { + err = -ERESTARTSYS; + break; + } + } + remove_wait_queue(&hw->open_wait, &wait); + if (err >= 0) { + err = snd_card_file_add(hw->card, file); + if (err >= 0) { + file->private_data = hw; + hw->used++; + } else { + if (hw->ops.release) + hw->ops.release(hw, file); + } + } + mutex_unlock(&hw->open_mutex); + if (err < 0) + module_put(hw->card->module); + snd_card_unref(hw->card); + return err; +} + +static int snd_hwdep_release(struct inode *inode, struct file * file) +{ + int err = 0; + struct snd_hwdep *hw = file->private_data; + struct module *mod = hw->card->module; + + mutex_lock(&hw->open_mutex); + if (hw->ops.release) + err = hw->ops.release(hw, file); + if (hw->used > 0) + hw->used--; + mutex_unlock(&hw->open_mutex); + wake_up(&hw->open_wait); + + snd_card_file_remove(hw->card, file); + module_put(mod); + return err; +} + +static __poll_t snd_hwdep_poll(struct file * file, poll_table * wait) +{ + struct snd_hwdep *hw = file->private_data; + if (hw->ops.poll) + return hw->ops.poll(hw, file, wait); + return 0; +} + +static int snd_hwdep_info(struct snd_hwdep *hw, + struct snd_hwdep_info __user *_info) +{ + struct snd_hwdep_info info; + + memset(&info, 0, sizeof(info)); + info.card = hw->card->number; + strscpy(info.id, hw->id, sizeof(info.id)); + strscpy(info.name, hw->name, sizeof(info.name)); + info.iface = hw->iface; + if (copy_to_user(_info, &info, sizeof(info))) + return -EFAULT; + return 0; +} + +static int snd_hwdep_dsp_status(struct snd_hwdep *hw, + struct snd_hwdep_dsp_status __user *_info) +{ + struct snd_hwdep_dsp_status info; + int err; + + if (! hw->ops.dsp_status) + return -ENXIO; + memset(&info, 0, sizeof(info)); + info.dsp_loaded = hw->dsp_loaded; + err = hw->ops.dsp_status(hw, &info); + if (err < 0) + return err; + if (copy_to_user(_info, &info, sizeof(info))) + return -EFAULT; + return 0; +} + +static int snd_hwdep_dsp_load(struct snd_hwdep *hw, + struct snd_hwdep_dsp_image *info) +{ + int err; + + if (! hw->ops.dsp_load) + return -ENXIO; + if (info->index >= 32) + return -EINVAL; + /* check whether the dsp was already loaded */ + if (hw->dsp_loaded & (1u << info->index)) + return -EBUSY; + err = hw->ops.dsp_load(hw, info); + if (err < 0) + return err; + hw->dsp_loaded |= (1u << info->index); + return 0; +} + +static int snd_hwdep_dsp_load_user(struct snd_hwdep *hw, + struct snd_hwdep_dsp_image __user *_info) +{ + struct snd_hwdep_dsp_image info = {}; + + if (copy_from_user(&info, _info, sizeof(info))) + return -EFAULT; + return snd_hwdep_dsp_load(hw, &info); +} + + +static long snd_hwdep_ioctl(struct file * file, unsigned int cmd, + unsigned long arg) +{ + struct snd_hwdep *hw = file->private_data; + void __user *argp = (void __user *)arg; + switch (cmd) { + case SNDRV_HWDEP_IOCTL_PVERSION: + return put_user(SNDRV_HWDEP_VERSION, (int __user *)argp); + case SNDRV_HWDEP_IOCTL_INFO: + return snd_hwdep_info(hw, argp); + case SNDRV_HWDEP_IOCTL_DSP_STATUS: + return snd_hwdep_dsp_status(hw, argp); + case SNDRV_HWDEP_IOCTL_DSP_LOAD: + return snd_hwdep_dsp_load_user(hw, argp); + } + if (hw->ops.ioctl) + return hw->ops.ioctl(hw, file, cmd, arg); + return -ENOTTY; +} + +static int snd_hwdep_mmap(struct file * file, struct vm_area_struct * vma) +{ + struct snd_hwdep *hw = file->private_data; + if (hw->ops.mmap) + return hw->ops.mmap(hw, file, vma); + return -ENXIO; +} + +static int snd_hwdep_control_ioctl(struct snd_card *card, + struct snd_ctl_file * control, + unsigned int cmd, unsigned long arg) +{ + switch (cmd) { + case SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE: + { + int device; + + if (get_user(device, (int __user *)arg)) + return -EFAULT; + mutex_lock(®ister_mutex); + + if (device < 0) + device = 0; + else if (device < SNDRV_MINOR_HWDEPS) + device++; + else + device = SNDRV_MINOR_HWDEPS; + + while (device < SNDRV_MINOR_HWDEPS) { + if (snd_hwdep_search(card, device)) + break; + device++; + } + if (device >= SNDRV_MINOR_HWDEPS) + device = -1; + mutex_unlock(®ister_mutex); + if (put_user(device, (int __user *)arg)) + return -EFAULT; + return 0; + } + case SNDRV_CTL_IOCTL_HWDEP_INFO: + { + struct snd_hwdep_info __user *info = (struct snd_hwdep_info __user *)arg; + int device, err; + struct snd_hwdep *hwdep; + + if (get_user(device, &info->device)) + return -EFAULT; + mutex_lock(®ister_mutex); + hwdep = snd_hwdep_search(card, device); + if (hwdep) + err = snd_hwdep_info(hwdep, info); + else + err = -ENXIO; + mutex_unlock(®ister_mutex); + return err; + } + } + return -ENOIOCTLCMD; +} + +#ifdef CONFIG_COMPAT +#include "hwdep_compat.c" +#else +#define snd_hwdep_ioctl_compat NULL +#endif + +/* + + */ + +static const struct file_operations snd_hwdep_f_ops = +{ + .owner = THIS_MODULE, + .llseek = snd_hwdep_llseek, + .read = snd_hwdep_read, + .write = snd_hwdep_write, + .open = snd_hwdep_open, + .release = snd_hwdep_release, + .poll = snd_hwdep_poll, + .unlocked_ioctl = snd_hwdep_ioctl, + .compat_ioctl = snd_hwdep_ioctl_compat, + .mmap = snd_hwdep_mmap, +}; + +static void release_hwdep_device(struct device *dev) +{ + kfree(container_of(dev, struct snd_hwdep, dev)); +} + +/** + * snd_hwdep_new - create a new hwdep instance + * @card: the card instance + * @id: the id string + * @device: the device index (zero-based) + * @rhwdep: the pointer to store the new hwdep instance + * + * Creates a new hwdep instance with the given index on the card. + * The callbacks (hwdep->ops) must be set on the returned instance + * after this call manually by the caller. + * + * Return: Zero if successful, or a negative error code on failure. + */ +int snd_hwdep_new(struct snd_card *card, char *id, int device, + struct snd_hwdep **rhwdep) +{ + struct snd_hwdep *hwdep; + int err; + static const struct snd_device_ops ops = { + .dev_free = snd_hwdep_dev_free, + .dev_register = snd_hwdep_dev_register, + .dev_disconnect = snd_hwdep_dev_disconnect, + }; + + if (snd_BUG_ON(!card)) + return -ENXIO; + if (rhwdep) + *rhwdep = NULL; + hwdep = kzalloc(sizeof(*hwdep), GFP_KERNEL); + if (!hwdep) + return -ENOMEM; + + init_waitqueue_head(&hwdep->open_wait); + mutex_init(&hwdep->open_mutex); + hwdep->card = card; + hwdep->device = device; + if (id) + strscpy(hwdep->id, id, sizeof(hwdep->id)); + + snd_device_initialize(&hwdep->dev, card); + hwdep->dev.release = release_hwdep_device; + dev_set_name(&hwdep->dev, "hwC%iD%i", card->number, device); +#ifdef CONFIG_SND_OSSEMUL + hwdep->oss_type = -1; +#endif + + err = snd_device_new(card, SNDRV_DEV_HWDEP, hwdep, &ops); + if (err < 0) { + put_device(&hwdep->dev); + return err; + } + + if (rhwdep) + *rhwdep = hwdep; + return 0; +} +EXPORT_SYMBOL(snd_hwdep_new); + +static int snd_hwdep_dev_free(struct snd_device *device) +{ + struct snd_hwdep *hwdep = device->device_data; + if (!hwdep) + return 0; + if (hwdep->private_free) + hwdep->private_free(hwdep); + put_device(&hwdep->dev); + return 0; +} + +static int snd_hwdep_dev_register(struct snd_device *device) +{ + struct snd_hwdep *hwdep = device->device_data; + struct snd_card *card = hwdep->card; + int err; + + mutex_lock(®ister_mutex); + if (snd_hwdep_search(card, hwdep->device)) { + mutex_unlock(®ister_mutex); + return -EBUSY; + } + list_add_tail(&hwdep->list, &snd_hwdep_devices); + err = snd_register_device(SNDRV_DEVICE_TYPE_HWDEP, + hwdep->card, hwdep->device, + &snd_hwdep_f_ops, hwdep, &hwdep->dev); + if (err < 0) { + dev_err(&hwdep->dev, "unable to register\n"); + list_del(&hwdep->list); + mutex_unlock(®ister_mutex); + return err; + } + +#ifdef CONFIG_SND_OSSEMUL + hwdep->ossreg = 0; + if (hwdep->oss_type >= 0) { + if (hwdep->oss_type == SNDRV_OSS_DEVICE_TYPE_DMFM && + hwdep->device) + dev_warn(&hwdep->dev, + "only hwdep device 0 can be registered as OSS direct FM device!\n"); + else if (snd_register_oss_device(hwdep->oss_type, + card, hwdep->device, + &snd_hwdep_f_ops, hwdep) < 0) + dev_warn(&hwdep->dev, + "unable to register OSS compatibility device\n"); + else + hwdep->ossreg = 1; + } +#endif + mutex_unlock(®ister_mutex); + return 0; +} + +static int snd_hwdep_dev_disconnect(struct snd_device *device) +{ + struct snd_hwdep *hwdep = device->device_data; + + if (snd_BUG_ON(!hwdep)) + return -ENXIO; + mutex_lock(®ister_mutex); + if (snd_hwdep_search(hwdep->card, hwdep->device) != hwdep) { + mutex_unlock(®ister_mutex); + return -EINVAL; + } + mutex_lock(&hwdep->open_mutex); + wake_up(&hwdep->open_wait); +#ifdef CONFIG_SND_OSSEMUL + if (hwdep->ossreg) + snd_unregister_oss_device(hwdep->oss_type, hwdep->card, hwdep->device); +#endif + snd_unregister_device(&hwdep->dev); + list_del_init(&hwdep->list); + mutex_unlock(&hwdep->open_mutex); + mutex_unlock(®ister_mutex); + return 0; +} + +#ifdef CONFIG_SND_PROC_FS +/* + * Info interface + */ + +static void snd_hwdep_proc_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct snd_hwdep *hwdep; + + mutex_lock(®ister_mutex); + list_for_each_entry(hwdep, &snd_hwdep_devices, list) + snd_iprintf(buffer, "%02i-%02i: %s\n", + hwdep->card->number, hwdep->device, hwdep->name); + mutex_unlock(®ister_mutex); +} + +static struct snd_info_entry *snd_hwdep_proc_entry; + +static void __init snd_hwdep_proc_init(void) +{ + struct snd_info_entry *entry; + + entry = snd_info_create_module_entry(THIS_MODULE, "hwdep", NULL); + if (entry) { + entry->c.text.read = snd_hwdep_proc_read; + if (snd_info_register(entry) < 0) { + snd_info_free_entry(entry); + entry = NULL; + } + } + snd_hwdep_proc_entry = entry; +} + +static void __exit snd_hwdep_proc_done(void) +{ + snd_info_free_entry(snd_hwdep_proc_entry); +} +#else /* !CONFIG_SND_PROC_FS */ +#define snd_hwdep_proc_init() +#define snd_hwdep_proc_done() +#endif /* CONFIG_SND_PROC_FS */ + + +/* + * ENTRY functions + */ + +static int __init alsa_hwdep_init(void) +{ + snd_hwdep_proc_init(); + snd_ctl_register_ioctl(snd_hwdep_control_ioctl); + snd_ctl_register_ioctl_compat(snd_hwdep_control_ioctl); + return 0; +} + +static void __exit alsa_hwdep_exit(void) +{ + snd_ctl_unregister_ioctl(snd_hwdep_control_ioctl); + snd_ctl_unregister_ioctl_compat(snd_hwdep_control_ioctl); + snd_hwdep_proc_done(); +} + +module_init(alsa_hwdep_init) +module_exit(alsa_hwdep_exit) -- cgit v1.2.3