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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/hid/usbhid/usbkbd.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip
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(). ...
Diffstat (limited to 'drivers/hid/usbhid/usbkbd.c')
-rw-r--r--drivers/hid/usbhid/usbkbd.c398
1 files changed, 398 insertions, 0 deletions
diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
new file mode 100644
index 000000000..c439ed2f1
--- /dev/null
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -0,0 +1,398 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 1999-2001 Vojtech Pavlik
+ *
+ * USB HIDBP Keyboard support
+ */
+
+/*
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/usb/input.h>
+#include <linux/hid.h>
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION ""
+#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
+#define DRIVER_DESC "USB HID Boot Protocol keyboard driver"
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+static const unsigned char usb_kbd_keycode[256] = {
+ 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
+ 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
+ 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
+ 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
+ 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
+ 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
+ 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
+ 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
+ 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0,
+ 122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
+ 150,158,159,128,136,177,178,176,142,152,173,140
+};
+
+
+/**
+ * struct usb_kbd - state of each attached keyboard
+ * @dev: input device associated with this keyboard
+ * @usbdev: usb device associated with this keyboard
+ * @old: data received in the past from the @irq URB representing which
+ * keys were pressed. By comparing with the current list of keys
+ * that are pressed, we are able to see key releases.
+ * @irq: URB for receiving a list of keys that are pressed when a
+ * new key is pressed or a key that was pressed is released.
+ * @led: URB for sending LEDs (e.g. numlock, ...)
+ * @newleds: data that will be sent with the @led URB representing which LEDs
+ * should be on
+ * @name: Name of the keyboard. @dev's name field points to this buffer
+ * @phys: Physical path of the keyboard. @dev's phys field points to this
+ * buffer
+ * @new: Buffer for the @irq URB
+ * @cr: Control request for @led URB
+ * @leds: Buffer for the @led URB
+ * @new_dma: DMA address for @irq URB
+ * @leds_dma: DMA address for @led URB
+ * @leds_lock: spinlock that protects @leds, @newleds, and @led_urb_submitted
+ * @led_urb_submitted: indicates whether @led is in progress, i.e. it has been
+ * submitted and its completion handler has not returned yet
+ * without resubmitting @led
+ */
+struct usb_kbd {
+ struct input_dev *dev;
+ struct usb_device *usbdev;
+ unsigned char old[8];
+ struct urb *irq, *led;
+ unsigned char newleds;
+ char name[128];
+ char phys[64];
+
+ unsigned char *new;
+ struct usb_ctrlrequest *cr;
+ unsigned char *leds;
+ dma_addr_t new_dma;
+ dma_addr_t leds_dma;
+
+ spinlock_t leds_lock;
+ bool led_urb_submitted;
+
+};
+
+static void usb_kbd_irq(struct urb *urb)
+{
+ struct usb_kbd *kbd = urb->context;
+ int i;
+
+ switch (urb->status) {
+ case 0: /* success */
+ break;
+ case -ECONNRESET: /* unlink */
+ case -ENOENT:
+ case -ESHUTDOWN:
+ return;
+ /* -EPIPE: should clear the halt */
+ default: /* error */
+ goto resubmit;
+ }
+
+ for (i = 0; i < 8; i++)
+ input_report_key(kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
+
+ for (i = 2; i < 8; i++) {
+
+ if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
+ if (usb_kbd_keycode[kbd->old[i]])
+ input_report_key(kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
+ else
+ hid_info(urb->dev,
+ "Unknown key (scancode %#x) released.\n",
+ kbd->old[i]);
+ }
+
+ if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
+ if (usb_kbd_keycode[kbd->new[i]])
+ input_report_key(kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
+ else
+ hid_info(urb->dev,
+ "Unknown key (scancode %#x) pressed.\n",
+ kbd->new[i]);
+ }
+ }
+
+ input_sync(kbd->dev);
+
+ memcpy(kbd->old, kbd->new, 8);
+
+resubmit:
+ i = usb_submit_urb (urb, GFP_ATOMIC);
+ if (i)
+ hid_err(urb->dev, "can't resubmit intr, %s-%s/input0, status %d",
+ kbd->usbdev->bus->bus_name,
+ kbd->usbdev->devpath, i);
+}
+
+static int usb_kbd_event(struct input_dev *dev, unsigned int type,
+ unsigned int code, int value)
+{
+ unsigned long flags;
+ struct usb_kbd *kbd = input_get_drvdata(dev);
+
+ if (type != EV_LED)
+ return -1;
+
+ spin_lock_irqsave(&kbd->leds_lock, flags);
+ kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
+ (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
+ (!!test_bit(LED_NUML, dev->led));
+
+ if (kbd->led_urb_submitted){
+ spin_unlock_irqrestore(&kbd->leds_lock, flags);
+ return 0;
+ }
+
+ if (*(kbd->leds) == kbd->newleds){
+ spin_unlock_irqrestore(&kbd->leds_lock, flags);
+ return 0;
+ }
+
+ *(kbd->leds) = kbd->newleds;
+
+ kbd->led->dev = kbd->usbdev;
+ if (usb_submit_urb(kbd->led, GFP_ATOMIC))
+ pr_err("usb_submit_urb(leds) failed\n");
+ else
+ kbd->led_urb_submitted = true;
+
+ spin_unlock_irqrestore(&kbd->leds_lock, flags);
+
+ return 0;
+}
+
+static void usb_kbd_led(struct urb *urb)
+{
+ unsigned long flags;
+ struct usb_kbd *kbd = urb->context;
+
+ if (urb->status)
+ hid_warn(urb->dev, "led urb status %d received\n",
+ urb->status);
+
+ spin_lock_irqsave(&kbd->leds_lock, flags);
+
+ if (*(kbd->leds) == kbd->newleds){
+ kbd->led_urb_submitted = false;
+ spin_unlock_irqrestore(&kbd->leds_lock, flags);
+ return;
+ }
+
+ *(kbd->leds) = kbd->newleds;
+
+ kbd->led->dev = kbd->usbdev;
+ if (usb_submit_urb(kbd->led, GFP_ATOMIC)){
+ hid_err(urb->dev, "usb_submit_urb(leds) failed\n");
+ kbd->led_urb_submitted = false;
+ }
+ spin_unlock_irqrestore(&kbd->leds_lock, flags);
+
+}
+
+static int usb_kbd_open(struct input_dev *dev)
+{
+ struct usb_kbd *kbd = input_get_drvdata(dev);
+
+ kbd->irq->dev = kbd->usbdev;
+ if (usb_submit_urb(kbd->irq, GFP_KERNEL))
+ return -EIO;
+
+ return 0;
+}
+
+static void usb_kbd_close(struct input_dev *dev)
+{
+ struct usb_kbd *kbd = input_get_drvdata(dev);
+
+ usb_kill_urb(kbd->irq);
+}
+
+static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd)
+{
+ if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL)))
+ return -1;
+ if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL)))
+ return -1;
+ if (!(kbd->new = usb_alloc_coherent(dev, 8, GFP_KERNEL, &kbd->new_dma)))
+ return -1;
+ if (!(kbd->cr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL)))
+ return -1;
+ if (!(kbd->leds = usb_alloc_coherent(dev, 1, GFP_KERNEL, &kbd->leds_dma)))
+ return -1;
+
+ return 0;
+}
+
+static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd)
+{
+ usb_free_urb(kbd->irq);
+ usb_free_urb(kbd->led);
+ usb_free_coherent(dev, 8, kbd->new, kbd->new_dma);
+ kfree(kbd->cr);
+ usb_free_coherent(dev, 1, kbd->leds, kbd->leds_dma);
+}
+
+static int usb_kbd_probe(struct usb_interface *iface,
+ const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev(iface);
+ struct usb_host_interface *interface;
+ struct usb_endpoint_descriptor *endpoint;
+ struct usb_kbd *kbd;
+ struct input_dev *input_dev;
+ int i, pipe, maxp;
+ int error = -ENOMEM;
+
+ interface = iface->cur_altsetting;
+
+ if (interface->desc.bNumEndpoints != 1)
+ return -ENODEV;
+
+ endpoint = &interface->endpoint[0].desc;
+ if (!usb_endpoint_is_int_in(endpoint))
+ return -ENODEV;
+
+ pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
+ maxp = usb_maxpacket(dev, pipe);
+
+ kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!kbd || !input_dev)
+ goto fail1;
+
+ if (usb_kbd_alloc_mem(dev, kbd))
+ goto fail2;
+
+ kbd->usbdev = dev;
+ kbd->dev = input_dev;
+ spin_lock_init(&kbd->leds_lock);
+
+ if (dev->manufacturer)
+ strscpy(kbd->name, dev->manufacturer, sizeof(kbd->name));
+
+ if (dev->product) {
+ if (dev->manufacturer)
+ strlcat(kbd->name, " ", sizeof(kbd->name));
+ strlcat(kbd->name, dev->product, sizeof(kbd->name));
+ }
+
+ if (!strlen(kbd->name))
+ snprintf(kbd->name, sizeof(kbd->name),
+ "USB HIDBP Keyboard %04x:%04x",
+ le16_to_cpu(dev->descriptor.idVendor),
+ le16_to_cpu(dev->descriptor.idProduct));
+
+ usb_make_path(dev, kbd->phys, sizeof(kbd->phys));
+ strlcat(kbd->phys, "/input0", sizeof(kbd->phys));
+
+ input_dev->name = kbd->name;
+ input_dev->phys = kbd->phys;
+ usb_to_input_id(dev, &input_dev->id);
+ input_dev->dev.parent = &iface->dev;
+
+ input_set_drvdata(input_dev, kbd);
+
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
+ BIT_MASK(EV_REP);
+ input_dev->ledbit[0] = BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
+ BIT_MASK(LED_SCROLLL) | BIT_MASK(LED_COMPOSE) |
+ BIT_MASK(LED_KANA);
+
+ for (i = 0; i < 255; i++)
+ set_bit(usb_kbd_keycode[i], input_dev->keybit);
+ clear_bit(0, input_dev->keybit);
+
+ input_dev->event = usb_kbd_event;
+ input_dev->open = usb_kbd_open;
+ input_dev->close = usb_kbd_close;
+
+ usb_fill_int_urb(kbd->irq, dev, pipe,
+ kbd->new, (maxp > 8 ? 8 : maxp),
+ usb_kbd_irq, kbd, endpoint->bInterval);
+ kbd->irq->transfer_dma = kbd->new_dma;
+ kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
+ kbd->cr->bRequest = 0x09;
+ kbd->cr->wValue = cpu_to_le16(0x200);
+ kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);
+ kbd->cr->wLength = cpu_to_le16(1);
+
+ usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0),
+ (void *) kbd->cr, kbd->leds, 1,
+ usb_kbd_led, kbd);
+ kbd->led->transfer_dma = kbd->leds_dma;
+ kbd->led->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ error = input_register_device(kbd->dev);
+ if (error)
+ goto fail2;
+
+ usb_set_intfdata(iface, kbd);
+ device_set_wakeup_enable(&dev->dev, 1);
+ return 0;
+
+fail2:
+ usb_kbd_free_mem(dev, kbd);
+fail1:
+ input_free_device(input_dev);
+ kfree(kbd);
+ return error;
+}
+
+static void usb_kbd_disconnect(struct usb_interface *intf)
+{
+ struct usb_kbd *kbd = usb_get_intfdata (intf);
+
+ usb_set_intfdata(intf, NULL);
+ if (kbd) {
+ usb_kill_urb(kbd->irq);
+ input_unregister_device(kbd->dev);
+ usb_kill_urb(kbd->led);
+ usb_kbd_free_mem(interface_to_usbdev(intf), kbd);
+ kfree(kbd);
+ }
+}
+
+static const struct usb_device_id usb_kbd_id_table[] = {
+ { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
+ USB_INTERFACE_PROTOCOL_KEYBOARD) },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
+
+static struct usb_driver usb_kbd_driver = {
+ .name = "usbkbd",
+ .probe = usb_kbd_probe,
+ .disconnect = usb_kbd_disconnect,
+ .id_table = usb_kbd_id_table,
+};
+
+module_usb_driver(usb_kbd_driver);