diff options
author | Jiri Kosina <jkosina@suse.cz> | 2012-05-22 11:32:31 +0200 |
---|---|---|
committer | Jiri Kosina <jkosina@suse.cz> | 2012-05-22 11:32:31 +0200 |
commit | 56ccd186f1837dd418cd094f0e96b3196bbab9ef (patch) | |
tree | 195cdd3973a1288eb84f51f0ec28a947b333c2c5 /drivers/hid | |
parent | b3d07e0344ea36dd3f3a2fdbfaab883e1c5ca69e (diff) | |
parent | d1257081aecf44455fcab8675f1d54e8b242faa1 (diff) | |
download | linux-stable-56ccd186f1837dd418cd094f0e96b3196bbab9ef.tar.gz linux-stable-56ccd186f1837dd418cd094f0e96b3196bbab9ef.tar.bz2 linux-stable-56ccd186f1837dd418cd094f0e96b3196bbab9ef.zip |
Merge branch 'upstream' into for-linus
Conflicts:
drivers/hid/hid-core.c
Diffstat (limited to 'drivers/hid')
-rw-r--r-- | drivers/hid/Kconfig | 6 | ||||
-rw-r--r-- | drivers/hid/Makefile | 1 | ||||
-rw-r--r-- | drivers/hid/hid-apple.c | 2 | ||||
-rw-r--r-- | drivers/hid/hid-aureal.c | 54 | ||||
-rw-r--r-- | drivers/hid/hid-core.c | 31 | ||||
-rw-r--r-- | drivers/hid/hid-ids.h | 4 | ||||
-rw-r--r-- | drivers/hid/hid-uclogic.c | 141 | ||||
-rw-r--r-- | drivers/hid/hidraw.c | 19 | ||||
-rw-r--r-- | drivers/hid/usbhid/hid-core.c | 65 | ||||
-rw-r--r-- | drivers/hid/usbhid/hiddev.c | 9 | ||||
-rw-r--r-- | drivers/hid/usbhid/usbhid.h | 1 |
11 files changed, 304 insertions, 29 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 9a581e1a1903..80175c37a6a5 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -104,6 +104,12 @@ config HID_APPLE Say Y here if you want support for keyboards of Apple iBooks, PowerBooks, MacBooks, MacBook Pros and Apple Aluminum. +config HID_AUREAL + tristate "Aureal" + depends on USB_HID + ---help--- + Support for Aureal Cy se W-01RN Remote Controller and other Aureal derived remotes. + config HID_BELKIN tristate "Belkin Flip KVM and Wireless keyboard" if EXPERT depends on USB_HID diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile index a04cffa4784f..ca6cc9f0485c 100644 --- a/drivers/hid/Makefile +++ b/drivers/hid/Makefile @@ -38,6 +38,7 @@ endif obj-$(CONFIG_HID_A4TECH) += hid-a4tech.o obj-$(CONFIG_HID_ACRUX) += hid-axff.o obj-$(CONFIG_HID_APPLE) += hid-apple.o +obj-$(CONFIG_HID_AUREAL) += hid-aureal.o obj-$(CONFIG_HID_BELKIN) += hid-belkin.o obj-$(CONFIG_HID_CHERRY) += hid-cherry.o obj-$(CONFIG_HID_CHICONY) += hid-chicony.o diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c index 299d23871122..7a79e39efc7e 100644 --- a/drivers/hid/hid-apple.c +++ b/drivers/hid/hid-apple.c @@ -234,7 +234,7 @@ static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input, } } - if (iso_layout) { + if (iso_layout) { if (asc->quirks & APPLE_ISO_KEYBOARD) { trans = apple_find_translation(apple_iso_keyboard, usage->code); if (trans) { diff --git a/drivers/hid/hid-aureal.c b/drivers/hid/hid-aureal.c new file mode 100644 index 000000000000..ba64b041b8bf --- /dev/null +++ b/drivers/hid/hid-aureal.c @@ -0,0 +1,54 @@ +/* + * HID driver for Aureal Cy se W-01RN USB_V3.1 devices + * + * Copyright (c) 2010 Franco Catrin <fcatrin@gmail.com> + * Copyright (c) 2010 Ben Cropley <bcropley@internode.on.net> + * + * Based on HID sunplus driver by + * Copyright (c) 1999 Andreas Gal + * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> + * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc + * Copyright (c) 2006-2007 Jiri Kosina + * Copyright (c) 2007 Paul Walmsley + * Copyright (c) 2008 Jiri Slaby + */ +#include <linux/device.h> +#include <linux/hid.h> +#include <linux/module.h> + +#include "hid-ids.h" + +static __u8 *aureal_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) +{ + if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) { + dev_info(&hdev->dev, "fixing Aureal Cy se W-01RN USB_V3.1 report descriptor.\n"); + rdesc[53] = 0x65; + } return rdesc; +} + +static const struct hid_device_id aureal_devices[] = { + { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) }, + { } +}; +MODULE_DEVICE_TABLE(hid, aureal_devices); + +static struct hid_driver aureal_driver = { + .name = "aureal", + .id_table = aureal_devices, + .report_fixup = aureal_report_fixup, +}; + +static int __init aureal_init(void) +{ + return hid_register_driver(&aureal_driver); +} + +static void __exit aureal_exit(void) +{ + hid_unregister_driver(&aureal_driver); +} + +module_init(aureal_init); +module_exit(aureal_exit); +MODULE_LICENSE("GPL"); diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index df2ca0af855f..9831a2ccae3d 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -230,9 +230,16 @@ static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsign return -1; } - if (parser->global.logical_maximum < parser->global.logical_minimum) { - hid_err(parser->device, "logical range invalid %d %d\n", - parser->global.logical_minimum, parser->global.logical_maximum); + /* Handle both signed and unsigned cases properly */ + if ((parser->global.logical_minimum < 0 && + parser->global.logical_maximum < + parser->global.logical_minimum) || + (parser->global.logical_minimum >= 0 && + (__u32)parser->global.logical_maximum < + (__u32)parser->global.logical_minimum)) { + dbg_hid("logical range invalid 0x%x 0x%x\n", + parser->global.logical_minimum, + parser->global.logical_maximum); return -1; } @@ -1149,7 +1156,7 @@ static struct hid_report *hid_get_report(struct hid_report_enum *report_enum, return report; } -void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, +int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, int interrupt) { struct hid_report_enum *report_enum = hid->report_enum + type; @@ -1157,10 +1164,11 @@ void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, unsigned int a; int rsize, csize = size; u8 *cdata = data; + int ret = 0; report = hid_get_report(report_enum, data); if (!report) - return; + goto out; if (report_enum->numbered) { cdata++; @@ -1180,14 +1188,19 @@ void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event) hid->hiddev_report_event(hid, report); - if (hid->claimed & HID_CLAIMED_HIDRAW) - hidraw_report_event(hid, data, size); + if (hid->claimed & HID_CLAIMED_HIDRAW) { + ret = hidraw_report_event(hid, data, size); + if (ret) + goto out; + } for (a = 0; a < report->maxfield; a++) hid_input_field(hid, report->field[a], cdata, interrupt); if (hid->claimed & HID_CLAIMED_INPUT) hidinput_report_event(hid, report); +out: + return ret; } EXPORT_SYMBOL_GPL(hid_report_raw_event); @@ -1264,7 +1277,7 @@ nomem: } } - hid_report_raw_event(hid, type, data, size, interrupt); + ret = hid_report_raw_event(hid, type, data, size, interrupt); unlock: up(&hid->driver_lock); @@ -1496,6 +1509,7 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, + { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) }, { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) }, { HID_USB_DEVICE(USB_VENDOR_ID_BAANTO, USB_DEVICE_ID_BAANTO_MT_190W2), }, { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) }, @@ -1631,6 +1645,7 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) }, { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) }, { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) }, + { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) }, { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) }, { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) }, { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) }, diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index e44932af8da2..4ff994166c04 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -154,6 +154,9 @@ #define USB_DEVICE_ID_ATMEL_MULTITOUCH 0x211c #define USB_DEVICE_ID_ATMEL_MXT_DIGITIZER 0x2118 +#define USB_VENDOR_ID_AUREAL 0x0755 +#define USB_DEVICE_ID_AUREAL_W01RN 0x2626 + #define USB_VENDOR_ID_AVERMEDIA 0x07ca #define USB_DEVICE_ID_AVER_FM_MR800 0xb800 @@ -729,6 +732,7 @@ #define USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U 0x0004 #define USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U 0x0005 #define USB_DEVICE_ID_UCLOGIC_TABLET_WP1062 0x0064 +#define USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850 0x0522 #define USB_VENDOR_ID_UNITEC 0x227d #define USB_DEVICE_ID_UNITEC_USB_TOUCH_0709 0x0709 diff --git a/drivers/hid/hid-uclogic.c b/drivers/hid/hid-uclogic.c index 1f1128910337..3aba02be1f26 100644 --- a/drivers/hid/hid-uclogic.c +++ b/drivers/hid/hid-uclogic.c @@ -14,6 +14,7 @@ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> +#include <linux/usb.h> #include "hid-ids.h" @@ -352,9 +353,125 @@ static __u8 pf1209_rdesc_fixed[] = { 0xC0 /* End Collection */ }; +/* + * See TWHL850 description, device and HID report descriptors at + * http://sf.net/apps/mediawiki/digimend/?title=UC-Logic_Wireless_Tablet_TWHL850 + */ + +/* Size of the original descriptors of TWHL850 tablet */ +#define TWHL850_RDESC_ORIG_SIZE0 182 +#define TWHL850_RDESC_ORIG_SIZE1 161 +#define TWHL850_RDESC_ORIG_SIZE2 92 + +/* Fixed PID 0522 tablet report descriptor, interface 0 (stylus) */ +static __u8 twhl850_rdesc_fixed0[] = { + 0x05, 0x0D, /* Usage Page (Digitizer), */ + 0x09, 0x02, /* Usage (Pen), */ + 0xA1, 0x01, /* Collection (Application), */ + 0x85, 0x09, /* Report ID (9), */ + 0x09, 0x20, /* Usage (Stylus), */ + 0xA0, /* Collection (Physical), */ + 0x14, /* Logical Minimum (0), */ + 0x25, 0x01, /* Logical Maximum (1), */ + 0x75, 0x01, /* Report Size (1), */ + 0x95, 0x03, /* Report Count (3), */ + 0x09, 0x42, /* Usage (Tip Switch), */ + 0x09, 0x44, /* Usage (Barrel Switch), */ + 0x09, 0x46, /* Usage (Tablet Pick), */ + 0x81, 0x02, /* Input (Variable), */ + 0x81, 0x03, /* Input (Constant, Variable), */ + 0x95, 0x01, /* Report Count (1), */ + 0x09, 0x32, /* Usage (In Range), */ + 0x81, 0x02, /* Input (Variable), */ + 0x81, 0x03, /* Input (Constant, Variable), */ + 0x75, 0x10, /* Report Size (16), */ + 0xA4, /* Push, */ + 0x05, 0x01, /* Usage Page (Desktop), */ + 0x65, 0x13, /* Unit (Inch), */ + 0x55, 0xFD, /* Unit Exponent (-3), */ + 0x34, /* Physical Minimum (0), */ + 0x09, 0x30, /* Usage (X), */ + 0x46, 0x40, 0x1F, /* Physical Maximum (8000), */ + 0x26, 0x00, 0x7D, /* Logical Maximum (32000), */ + 0x81, 0x02, /* Input (Variable), */ + 0x09, 0x31, /* Usage (Y), */ + 0x46, 0x88, 0x13, /* Physical Maximum (5000), */ + 0x26, 0x20, 0x4E, /* Logical Maximum (20000), */ + 0x81, 0x02, /* Input (Variable), */ + 0xB4, /* Pop, */ + 0x09, 0x30, /* Usage (Tip Pressure), */ + 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ + 0x81, 0x02, /* Input (Variable), */ + 0xC0, /* End Collection, */ + 0xC0 /* End Collection */ +}; + +/* Fixed PID 0522 tablet report descriptor, interface 1 (mouse) */ +static __u8 twhl850_rdesc_fixed1[] = { + 0x05, 0x01, /* Usage Page (Desktop), */ + 0x09, 0x02, /* Usage (Mouse), */ + 0xA1, 0x01, /* Collection (Application), */ + 0x85, 0x01, /* Report ID (1), */ + 0x09, 0x01, /* Usage (Pointer), */ + 0xA0, /* Collection (Physical), */ + 0x05, 0x09, /* Usage Page (Button), */ + 0x75, 0x01, /* Report Size (1), */ + 0x95, 0x03, /* Report Count (3), */ + 0x19, 0x01, /* Usage Minimum (01h), */ + 0x29, 0x03, /* Usage Maximum (03h), */ + 0x14, /* Logical Minimum (0), */ + 0x25, 0x01, /* Logical Maximum (1), */ + 0x81, 0x02, /* Input (Variable), */ + 0x95, 0x05, /* Report Count (5), */ + 0x81, 0x03, /* Input (Constant, Variable), */ + 0x05, 0x01, /* Usage Page (Desktop), */ + 0x09, 0x30, /* Usage (X), */ + 0x09, 0x31, /* Usage (Y), */ + 0x16, 0x00, 0x80, /* Logical Minimum (-32768), */ + 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ + 0x75, 0x10, /* Report Size (16), */ + 0x95, 0x02, /* Report Count (2), */ + 0x81, 0x06, /* Input (Variable, Relative), */ + 0x09, 0x38, /* Usage (Wheel), */ + 0x15, 0xFF, /* Logical Minimum (-1), */ + 0x25, 0x01, /* Logical Maximum (1), */ + 0x95, 0x01, /* Report Count (1), */ + 0x75, 0x08, /* Report Size (8), */ + 0x81, 0x06, /* Input (Variable, Relative), */ + 0x81, 0x03, /* Input (Constant, Variable), */ + 0xC0, /* End Collection, */ + 0xC0 /* End Collection */ +}; + +/* Fixed PID 0522 tablet report descriptor, interface 2 (frame buttons) */ +static __u8 twhl850_rdesc_fixed2[] = { + 0x05, 0x01, /* Usage Page (Desktop), */ + 0x09, 0x06, /* Usage (Keyboard), */ + 0xA1, 0x01, /* Collection (Application), */ + 0x85, 0x03, /* Report ID (3), */ + 0x05, 0x07, /* Usage Page (Keyboard), */ + 0x14, /* Logical Minimum (0), */ + 0x19, 0xE0, /* Usage Minimum (KB Leftcontrol), */ + 0x29, 0xE7, /* Usage Maximum (KB Right GUI), */ + 0x25, 0x01, /* Logical Maximum (1), */ + 0x75, 0x01, /* Report Size (1), */ + 0x95, 0x08, /* Report Count (8), */ + 0x81, 0x02, /* Input (Variable), */ + 0x18, /* Usage Minimum (None), */ + 0x29, 0xFF, /* Usage Maximum (FFh), */ + 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ + 0x75, 0x08, /* Report Size (8), */ + 0x95, 0x06, /* Report Count (6), */ + 0x80, /* Input, */ + 0xC0 /* End Collection */ +}; + static __u8 *uclogic_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { + struct usb_interface *iface = to_usb_interface(hdev->dev.parent); + __u8 iface_num = iface->cur_altsetting->desc.bInterfaceNumber; + switch (hdev->product) { case USB_DEVICE_ID_UCLOGIC_TABLET_PF1209: if (*rsize == PF1209_RDESC_ORIG_SIZE) { @@ -386,6 +503,28 @@ static __u8 *uclogic_report_fixup(struct hid_device *hdev, __u8 *rdesc, *rsize = sizeof(wp1062_rdesc_fixed); } break; + case USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850: + switch (iface_num) { + case 0: + if (*rsize == TWHL850_RDESC_ORIG_SIZE0) { + rdesc = twhl850_rdesc_fixed0; + *rsize = sizeof(twhl850_rdesc_fixed0); + } + break; + case 1: + if (*rsize == TWHL850_RDESC_ORIG_SIZE1) { + rdesc = twhl850_rdesc_fixed1; + *rsize = sizeof(twhl850_rdesc_fixed1); + } + break; + case 2: + if (*rsize == TWHL850_RDESC_ORIG_SIZE2) { + rdesc = twhl850_rdesc_fixed2; + *rsize = sizeof(twhl850_rdesc_fixed2); + } + break; + } + break; } return rdesc; @@ -402,6 +541,8 @@ static const struct hid_device_id uclogic_devices[] = { USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) }, { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) }, + { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, + USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) }, { } }; MODULE_DEVICE_TABLE(hid, uclogic_devices); diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index cf7d6d58e79f..36fa77b40ffb 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -87,11 +87,13 @@ static ssize_t hidraw_read(struct file *file, char __user *buffer, size_t count, len = list->buffer[list->tail].len > count ? count : list->buffer[list->tail].len; - if (copy_to_user(buffer, list->buffer[list->tail].value, len)) { - ret = -EFAULT; - goto out; + if (list->buffer[list->tail].value) { + if (copy_to_user(buffer, list->buffer[list->tail].value, len)) { + ret = -EFAULT; + goto out; + } + ret = len; } - ret = len; kfree(list->buffer[list->tail].value); list->tail = (list->tail + 1) & (HIDRAW_BUFFER_SIZE - 1); @@ -437,19 +439,24 @@ static const struct file_operations hidraw_ops = { .llseek = noop_llseek, }; -void hidraw_report_event(struct hid_device *hid, u8 *data, int len) +int hidraw_report_event(struct hid_device *hid, u8 *data, int len) { struct hidraw *dev = hid->hidraw; struct hidraw_list *list; + int ret = 0; list_for_each_entry(list, &dev->list, node) { - list->buffer[list->head].value = kmemdup(data, len, GFP_ATOMIC); + if (!(list->buffer[list->head].value = kmemdup(data, len, GFP_ATOMIC))) { + ret = -ENOMEM; + break; + } list->buffer[list->head].len = len; list->head = (list->head + 1) & (HIDRAW_BUFFER_SIZE - 1); kill_fasync(&list->fasync, SIGIO, POLL_IN); } wake_up_interruptible(&dev->wait); + return ret; } EXPORT_SYMBOL_GPL(hidraw_report_event); diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 9cba5006b5ed..df3789f5d9a5 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -28,6 +28,7 @@ #include <linux/input.h> #include <linux/wait.h> #include <linux/workqueue.h> +#include <linux/string.h> #include <linux/usb.h> @@ -86,8 +87,13 @@ static int hid_start_in(struct hid_device *hid) !test_bit(HID_REPORTED_IDLE, &usbhid->iofl) && !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) { rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC); - if (rc != 0) + if (rc != 0) { clear_bit(HID_IN_RUNNING, &usbhid->iofl); + if (rc == -ENOSPC) + set_bit(HID_NO_BANDWIDTH, &usbhid->iofl); + } else { + clear_bit(HID_NO_BANDWIDTH, &usbhid->iofl); + } } spin_unlock_irqrestore(&usbhid->lock, flags); return rc; @@ -173,8 +179,10 @@ static void hid_io_error(struct hid_device *hid) if (time_after(jiffies, usbhid->stop_retry)) { - /* Retries failed, so do a port reset */ - if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) { + /* Retries failed, so do a port reset unless we lack bandwidth*/ + if (test_bit(HID_NO_BANDWIDTH, &usbhid->iofl) + && !test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) { + schedule_work(&usbhid->reset_work); goto done; } @@ -700,7 +708,7 @@ static int hid_get_class_descriptor(struct usb_device *dev, int ifnum, int usbhid_open(struct hid_device *hid) { struct usbhid_device *usbhid = hid->driver_data; - int res; + int res = 0; mutex_lock(&hid_open_mut); if (!hid->open++) { @@ -708,17 +716,27 @@ int usbhid_open(struct hid_device *hid) /* the device must be awake to reliably request remote wakeup */ if (res < 0) { hid->open--; - mutex_unlock(&hid_open_mut); - return -EIO; + res = -EIO; + goto done; } usbhid->intf->needs_remote_wakeup = 1; - if (hid_start_in(hid)) - hid_io_error(hid); - + res = hid_start_in(hid); + if (res) { + if (res != -ENOSPC) { + hid_io_error(hid); + res = 0; + } else { + /* no use opening if resources are insufficient */ + hid->open--; + res = -EBUSY; + usbhid->intf->needs_remote_wakeup = 0; + } + } usb_autopm_put_interface(usbhid->intf); } +done: mutex_unlock(&hid_open_mut); - return 0; + return res; } void usbhid_close(struct hid_device *hid) @@ -1347,7 +1365,34 @@ static int hid_post_reset(struct usb_interface *intf) struct usb_device *dev = interface_to_usbdev (intf); struct hid_device *hid = usb_get_intfdata(intf); struct usbhid_device *usbhid = hid->driver_data; + struct usb_host_interface *interface = intf->cur_altsetting; int status; + char *rdesc; + + /* Fetch and examine the HID report descriptor. If this + * has changed, then rebind. Since usbcore's check of the + * configuration descriptors passed, we already know that + * the size of the HID report descriptor has not changed. + */ + rdesc = kmalloc(hid->rsize, GFP_KERNEL); + if (!rdesc) { + dbg_hid("couldn't allocate rdesc memory (post_reset)\n"); + return 1; + } + status = hid_get_class_descriptor(dev, + interface->desc.bInterfaceNumber, + HID_DT_REPORT, rdesc, hid->rsize); + if (status < 0) { + dbg_hid("reading report descriptor failed (post_reset)\n"); + kfree(rdesc); + return 1; + } + status = memcmp(rdesc, hid->rdesc, hid->rsize); + kfree(rdesc); + if (status != 0) { + dbg_hid("report descriptor changed\n"); + return 1; + } spin_lock_irq(&usbhid->lock); clear_bit(HID_RESET_PENDING, &usbhid->iofl); diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c index b1ec0e2aeb57..14599e256791 100644 --- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -34,6 +34,7 @@ #include <linux/hid.h> #include <linux/hiddev.h> #include <linux/compat.h> +#include <linux/vmalloc.h> #include "usbhid.h" #ifdef CONFIG_USB_DYNAMIC_MINORS @@ -250,13 +251,13 @@ static int hiddev_release(struct inode * inode, struct file * file) } else { mutex_unlock(&list->hiddev->existancelock); kfree(list->hiddev); - kfree(list); + vfree(list); return 0; } } mutex_unlock(&list->hiddev->existancelock); - kfree(list); + vfree(list); return 0; } @@ -278,7 +279,7 @@ static int hiddev_open(struct inode *inode, struct file *file) hid = usb_get_intfdata(intf); hiddev = hid->hiddev; - if (!(list = kzalloc(sizeof(struct hiddev_list), GFP_KERNEL))) + if (!(list = vzalloc(sizeof(struct hiddev_list)))) return -ENOMEM; mutex_init(&list->thread_lock); list->hiddev = hiddev; @@ -322,7 +323,7 @@ bail_unlock: mutex_unlock(&hiddev->existancelock); bail: file->private_data = NULL; - kfree(list); + vfree(list); return res; } diff --git a/drivers/hid/usbhid/usbhid.h b/drivers/hid/usbhid/usbhid.h index cb8f703efde5..1883d7b94870 100644 --- a/drivers/hid/usbhid/usbhid.h +++ b/drivers/hid/usbhid/usbhid.h @@ -55,6 +55,7 @@ struct usb_interface *usbhid_find_interface(int minor); #define HID_STARTED 8 #define HID_REPORTED_IDLE 9 #define HID_KEYS_PRESSED 10 +#define HID_NO_BANDWIDTH 11 /* * USB-specific HID struct, to be pointed to |