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/control_compat.c | 483 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 483 insertions(+) create mode 100644 sound/core/control_compat.c (limited to 'sound/core/control_compat.c') diff --git a/sound/core/control_compat.c b/sound/core/control_compat.c new file mode 100644 index 000000000..d8a86d1a9 --- /dev/null +++ b/sound/core/control_compat.c @@ -0,0 +1,483 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * compat ioctls for control API + * + * Copyright (c) by Takashi Iwai + */ + +/* this file included from control.c */ + +#include +#include + +struct snd_ctl_elem_list32 { + u32 offset; + u32 space; + u32 used; + u32 count; + u32 pids; + unsigned char reserved[50]; +} /* don't set packed attribute here */; + +static int snd_ctl_elem_list_compat(struct snd_card *card, + struct snd_ctl_elem_list32 __user *data32) +{ + struct snd_ctl_elem_list data = {}; + compat_caddr_t ptr; + int err; + + /* offset, space, used, count */ + if (copy_from_user(&data, data32, 4 * sizeof(u32))) + return -EFAULT; + /* pids */ + if (get_user(ptr, &data32->pids)) + return -EFAULT; + data.pids = compat_ptr(ptr); + err = snd_ctl_elem_list(card, &data); + if (err < 0) + return err; + /* copy the result */ + if (copy_to_user(data32, &data, 4 * sizeof(u32))) + return -EFAULT; + return 0; +} + +/* + * control element info + * it uses union, so the things are not easy.. + */ + +struct snd_ctl_elem_info32 { + struct snd_ctl_elem_id id; // the size of struct is same + s32 type; + u32 access; + u32 count; + s32 owner; + union { + struct { + s32 min; + s32 max; + s32 step; + } integer; + struct { + u64 min; + u64 max; + u64 step; + } integer64; + struct { + u32 items; + u32 item; + char name[64]; + u64 names_ptr; + u32 names_length; + } enumerated; + unsigned char reserved[128]; + } value; + unsigned char reserved[64]; +} __attribute__((packed)); + +static int snd_ctl_elem_info_compat(struct snd_ctl_file *ctl, + struct snd_ctl_elem_info32 __user *data32) +{ + struct snd_ctl_elem_info *data; + int err; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (! data) + return -ENOMEM; + + err = -EFAULT; + /* copy id */ + if (copy_from_user(&data->id, &data32->id, sizeof(data->id))) + goto error; + /* we need to copy the item index. + * hope this doesn't break anything.. + */ + if (get_user(data->value.enumerated.item, &data32->value.enumerated.item)) + goto error; + + err = snd_ctl_elem_info(ctl, data); + if (err < 0) + goto error; + /* restore info to 32bit */ + err = -EFAULT; + /* id, type, access, count */ + if (copy_to_user(&data32->id, &data->id, sizeof(data->id)) || + copy_to_user(&data32->type, &data->type, 3 * sizeof(u32))) + goto error; + if (put_user(data->owner, &data32->owner)) + goto error; + switch (data->type) { + case SNDRV_CTL_ELEM_TYPE_BOOLEAN: + case SNDRV_CTL_ELEM_TYPE_INTEGER: + if (put_user(data->value.integer.min, &data32->value.integer.min) || + put_user(data->value.integer.max, &data32->value.integer.max) || + put_user(data->value.integer.step, &data32->value.integer.step)) + goto error; + break; + case SNDRV_CTL_ELEM_TYPE_INTEGER64: + if (copy_to_user(&data32->value.integer64, + &data->value.integer64, + sizeof(data->value.integer64))) + goto error; + break; + case SNDRV_CTL_ELEM_TYPE_ENUMERATED: + if (copy_to_user(&data32->value.enumerated, + &data->value.enumerated, + sizeof(data->value.enumerated))) + goto error; + break; + default: + break; + } + err = 0; + error: + kfree(data); + return err; +} + +/* read / write */ +struct snd_ctl_elem_value32 { + struct snd_ctl_elem_id id; + unsigned int indirect; /* bit-field causes misalignment */ + union { + s32 integer[128]; + unsigned char data[512]; +#ifndef CONFIG_X86_64 + s64 integer64[64]; +#endif + } value; + unsigned char reserved[128]; +}; + +#ifdef CONFIG_X86_X32_ABI +/* x32 has a different alignment for 64bit values from ia32 */ +struct snd_ctl_elem_value_x32 { + struct snd_ctl_elem_id id; + unsigned int indirect; /* bit-field causes misalignment */ + union { + s32 integer[128]; + unsigned char data[512]; + s64 integer64[64]; + } value; + unsigned char reserved[128]; +}; +#endif /* CONFIG_X86_X32_ABI */ + +/* get the value type and count of the control */ +static int get_ctl_type(struct snd_card *card, struct snd_ctl_elem_id *id, + int *countp) +{ + struct snd_kcontrol *kctl; + struct snd_ctl_elem_info *info; + int err; + + down_read(&card->controls_rwsem); + kctl = snd_ctl_find_id(card, id); + if (! kctl) { + up_read(&card->controls_rwsem); + return -ENOENT; + } + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (info == NULL) { + up_read(&card->controls_rwsem); + return -ENOMEM; + } + info->id = *id; + err = snd_power_ref_and_wait(card); + if (!err) + err = kctl->info(kctl, info); + snd_power_unref(card); + up_read(&card->controls_rwsem); + if (err >= 0) { + err = info->type; + *countp = info->count; + } + kfree(info); + return err; +} + +static int get_elem_size(int type, int count) +{ + switch (type) { + case SNDRV_CTL_ELEM_TYPE_INTEGER64: + return sizeof(s64) * count; + case SNDRV_CTL_ELEM_TYPE_ENUMERATED: + return sizeof(int) * count; + case SNDRV_CTL_ELEM_TYPE_BYTES: + return 512; + case SNDRV_CTL_ELEM_TYPE_IEC958: + return sizeof(struct snd_aes_iec958); + default: + return -1; + } +} + +static int copy_ctl_value_from_user(struct snd_card *card, + struct snd_ctl_elem_value *data, + void __user *userdata, + void __user *valuep, + int *typep, int *countp) +{ + struct snd_ctl_elem_value32 __user *data32 = userdata; + int i, type, size; + int count; + unsigned int indirect; + + if (copy_from_user(&data->id, &data32->id, sizeof(data->id))) + return -EFAULT; + if (get_user(indirect, &data32->indirect)) + return -EFAULT; + if (indirect) + return -EINVAL; + type = get_ctl_type(card, &data->id, &count); + if (type < 0) + return type; + + if (type == SNDRV_CTL_ELEM_TYPE_BOOLEAN || + type == SNDRV_CTL_ELEM_TYPE_INTEGER) { + for (i = 0; i < count; i++) { + s32 __user *intp = valuep; + int val; + if (get_user(val, &intp[i])) + return -EFAULT; + data->value.integer.value[i] = val; + } + } else { + size = get_elem_size(type, count); + if (size < 0) { + dev_err(card->dev, "snd_ioctl32_ctl_elem_value: unknown type %d\n", type); + return -EINVAL; + } + if (copy_from_user(data->value.bytes.data, valuep, size)) + return -EFAULT; + } + + *typep = type; + *countp = count; + return 0; +} + +/* restore the value to 32bit */ +static int copy_ctl_value_to_user(void __user *userdata, + void __user *valuep, + struct snd_ctl_elem_value *data, + int type, int count) +{ + struct snd_ctl_elem_value32 __user *data32 = userdata; + int i, size; + + if (type == SNDRV_CTL_ELEM_TYPE_BOOLEAN || + type == SNDRV_CTL_ELEM_TYPE_INTEGER) { + for (i = 0; i < count; i++) { + s32 __user *intp = valuep; + int val; + val = data->value.integer.value[i]; + if (put_user(val, &intp[i])) + return -EFAULT; + } + } else { + size = get_elem_size(type, count); + if (copy_to_user(valuep, data->value.bytes.data, size)) + return -EFAULT; + } + if (copy_to_user(&data32->id, &data->id, sizeof(data32->id))) + return -EFAULT; + return 0; +} + +static int ctl_elem_read_user(struct snd_card *card, + void __user *userdata, void __user *valuep) +{ + struct snd_ctl_elem_value *data; + int err, type, count; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (data == NULL) + return -ENOMEM; + + err = copy_ctl_value_from_user(card, data, userdata, valuep, + &type, &count); + if (err < 0) + goto error; + + err = snd_ctl_elem_read(card, data); + if (err < 0) + goto error; + err = copy_ctl_value_to_user(userdata, valuep, data, type, count); + error: + kfree(data); + return err; +} + +static int ctl_elem_write_user(struct snd_ctl_file *file, + void __user *userdata, void __user *valuep) +{ + struct snd_ctl_elem_value *data; + struct snd_card *card = file->card; + int err, type, count; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (data == NULL) + return -ENOMEM; + + err = copy_ctl_value_from_user(card, data, userdata, valuep, + &type, &count); + if (err < 0) + goto error; + + err = snd_ctl_elem_write(card, file, data); + if (err < 0) + goto error; + err = copy_ctl_value_to_user(userdata, valuep, data, type, count); + error: + kfree(data); + return err; +} + +static int snd_ctl_elem_read_user_compat(struct snd_card *card, + struct snd_ctl_elem_value32 __user *data32) +{ + return ctl_elem_read_user(card, data32, &data32->value); +} + +static int snd_ctl_elem_write_user_compat(struct snd_ctl_file *file, + struct snd_ctl_elem_value32 __user *data32) +{ + return ctl_elem_write_user(file, data32, &data32->value); +} + +#ifdef CONFIG_X86_X32_ABI +static int snd_ctl_elem_read_user_x32(struct snd_card *card, + struct snd_ctl_elem_value_x32 __user *data32) +{ + return ctl_elem_read_user(card, data32, &data32->value); +} + +static int snd_ctl_elem_write_user_x32(struct snd_ctl_file *file, + struct snd_ctl_elem_value_x32 __user *data32) +{ + return ctl_elem_write_user(file, data32, &data32->value); +} +#endif /* CONFIG_X86_X32_ABI */ + +/* add or replace a user control */ +static int snd_ctl_elem_add_compat(struct snd_ctl_file *file, + struct snd_ctl_elem_info32 __user *data32, + int replace) +{ + struct snd_ctl_elem_info *data; + int err; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (! data) + return -ENOMEM; + + err = -EFAULT; + /* id, type, access, count */ \ + if (copy_from_user(&data->id, &data32->id, sizeof(data->id)) || + copy_from_user(&data->type, &data32->type, 3 * sizeof(u32))) + goto error; + if (get_user(data->owner, &data32->owner)) + goto error; + switch (data->type) { + case SNDRV_CTL_ELEM_TYPE_BOOLEAN: + case SNDRV_CTL_ELEM_TYPE_INTEGER: + if (get_user(data->value.integer.min, &data32->value.integer.min) || + get_user(data->value.integer.max, &data32->value.integer.max) || + get_user(data->value.integer.step, &data32->value.integer.step)) + goto error; + break; + case SNDRV_CTL_ELEM_TYPE_INTEGER64: + if (copy_from_user(&data->value.integer64, + &data32->value.integer64, + sizeof(data->value.integer64))) + goto error; + break; + case SNDRV_CTL_ELEM_TYPE_ENUMERATED: + if (copy_from_user(&data->value.enumerated, + &data32->value.enumerated, + sizeof(data->value.enumerated))) + goto error; + data->value.enumerated.names_ptr = + (uintptr_t)compat_ptr(data->value.enumerated.names_ptr); + break; + default: + break; + } + err = snd_ctl_elem_add(file, data, replace); + error: + kfree(data); + return err; +} + +enum { + SNDRV_CTL_IOCTL_ELEM_LIST32 = _IOWR('U', 0x10, struct snd_ctl_elem_list32), + SNDRV_CTL_IOCTL_ELEM_INFO32 = _IOWR('U', 0x11, struct snd_ctl_elem_info32), + SNDRV_CTL_IOCTL_ELEM_READ32 = _IOWR('U', 0x12, struct snd_ctl_elem_value32), + SNDRV_CTL_IOCTL_ELEM_WRITE32 = _IOWR('U', 0x13, struct snd_ctl_elem_value32), + SNDRV_CTL_IOCTL_ELEM_ADD32 = _IOWR('U', 0x17, struct snd_ctl_elem_info32), + SNDRV_CTL_IOCTL_ELEM_REPLACE32 = _IOWR('U', 0x18, struct snd_ctl_elem_info32), +#ifdef CONFIG_X86_X32_ABI + SNDRV_CTL_IOCTL_ELEM_READ_X32 = _IOWR('U', 0x12, struct snd_ctl_elem_value_x32), + SNDRV_CTL_IOCTL_ELEM_WRITE_X32 = _IOWR('U', 0x13, struct snd_ctl_elem_value_x32), +#endif /* CONFIG_X86_X32_ABI */ +}; + +static inline long snd_ctl_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct snd_ctl_file *ctl; + struct snd_kctl_ioctl *p; + void __user *argp = compat_ptr(arg); + int err; + + ctl = file->private_data; + if (snd_BUG_ON(!ctl || !ctl->card)) + return -ENXIO; + + switch (cmd) { + case SNDRV_CTL_IOCTL_PVERSION: + case SNDRV_CTL_IOCTL_CARD_INFO: + case SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS: + case SNDRV_CTL_IOCTL_POWER: + case SNDRV_CTL_IOCTL_POWER_STATE: + case SNDRV_CTL_IOCTL_ELEM_LOCK: + case SNDRV_CTL_IOCTL_ELEM_UNLOCK: + case SNDRV_CTL_IOCTL_ELEM_REMOVE: + case SNDRV_CTL_IOCTL_TLV_READ: + case SNDRV_CTL_IOCTL_TLV_WRITE: + case SNDRV_CTL_IOCTL_TLV_COMMAND: + return snd_ctl_ioctl(file, cmd, (unsigned long)argp); + case SNDRV_CTL_IOCTL_ELEM_LIST32: + return snd_ctl_elem_list_compat(ctl->card, argp); + case SNDRV_CTL_IOCTL_ELEM_INFO32: + return snd_ctl_elem_info_compat(ctl, argp); + case SNDRV_CTL_IOCTL_ELEM_READ32: + return snd_ctl_elem_read_user_compat(ctl->card, argp); + case SNDRV_CTL_IOCTL_ELEM_WRITE32: + return snd_ctl_elem_write_user_compat(ctl, argp); + case SNDRV_CTL_IOCTL_ELEM_ADD32: + return snd_ctl_elem_add_compat(ctl, argp, 0); + case SNDRV_CTL_IOCTL_ELEM_REPLACE32: + return snd_ctl_elem_add_compat(ctl, argp, 1); +#ifdef CONFIG_X86_X32_ABI + case SNDRV_CTL_IOCTL_ELEM_READ_X32: + return snd_ctl_elem_read_user_x32(ctl->card, argp); + case SNDRV_CTL_IOCTL_ELEM_WRITE_X32: + return snd_ctl_elem_write_user_x32(ctl, argp); +#endif /* CONFIG_X86_X32_ABI */ + } + + down_read(&snd_ioctl_rwsem); + list_for_each_entry(p, &snd_control_compat_ioctls, list) { + if (p->fioctl) { + err = p->fioctl(ctl->card, ctl, cmd, arg); + if (err != -ENOIOCTLCMD) { + up_read(&snd_ioctl_rwsem); + return err; + } + } + } + up_read(&snd_ioctl_rwsem); + return -ENOIOCTLCMD; +} -- cgit v1.2.3