samsung_sm8750/android_kernel_samsung_sm8750
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add samsung specific changes

Browse Source
This commit is contained in:
Sascha Nesterovic
2025-08-11 14:29:00 +02:00
parent c66122e619
commit 4d134a1294
2688 changed files with 1127995 additions and 11475 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/hid/hid-apple.c
View File

@@ -513,6 +513,21 @@ static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
code = trans->to;
}
}
if (asc->quirks & APPLE_NUMLOCK_EMULATION &&
(test_bit(code, asc->pressed_numlock) ||
test_bit(LED_NUML, input->led))) {
trans = apple_find_translation(powerbook_numlock_keys, code);
if (trans) {
if (value)
set_bit(code, asc->pressed_numlock);
else
clear_bit(code, asc->pressed_numlock);
code = trans->to;
}
}
}
if (usage->code != code) {

7
drivers/hid/hid-ids.h
View File

@@ -1140,15 +1140,8 @@
#define USB_DEVICE_ID_SAITEK_X65 0x0b6a
#define USB_VENDOR_ID_SAMSUNG 0x0419
#define USB_VENDOR_ID_SAMSUNG_ELECTRONICS 0x04e8
#define USB_DEVICE_ID_SAMSUNG_IR_REMOTE 0x0001
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE 0x0600
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD 0x7021
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_GAMEPAD 0xa000
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_ACTIONMOUSE 0xa004
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_BOOKCOVER 0xa005
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_UNIVERSAL_KBD 0xa006
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_MULTI_HOGP_KBD 0xa064
#define USB_VENDOR_ID_SEMICO 0x1a2c
#define USB_DEVICE_ID_SEMICO_USB_KEYKOARD 0x0023

4
drivers/hid/hid-input.c
View File

@@ -1899,7 +1899,6 @@ static void hidinput_close(struct input_dev *dev)
hid_hw_close(hid);
}
#if 0
static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
struct hid_report *report, bool use_logical_max)
{
@@ -1980,7 +1979,6 @@ static void hidinput_change_resolution_multipliers(struct hid_device *hid)
/* refresh our structs */
hid_setup_resolution_multiplier(hid);
}
#endif
static void report_features(struct hid_device *hid)
{
@@ -2346,7 +2344,7 @@ int hidinput_connect(struct hid_device *hid, unsigned int force)
}
}
//hidinput_change_resolution_multipliers(hid);
hidinput_change_resolution_multipliers(hid);
list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
if (drv->input_configured &&

29
drivers/hid/hid-logitech-hidpp.c
View File

@@ -4656,6 +4656,35 @@ static const struct hid_device_id hidpp_devices[] = {
{ /* G935 Gaming Headset */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0x0a87),
.driver_data = HIDPP_QUIRK_WIRELESS_STATUS },
{ /* MX5000 keyboard over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb305),
.driver_data = HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS },
{ /* Dinovo Edge keyboard over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb309),
.driver_data = HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS },
{ /* MX5500 keyboard over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb30b),
.driver_data = HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS },
{ /* Logitech G915 TKL keyboard over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb35f) },
{ /* M-RCQ142 V470 Cordless Laser Mouse over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb008) },
{ /* MX Master mouse over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb012) },
{ /* M720 Triathlon mouse over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb015) },
{ /* MX Ergo trackball over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb01d) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb01e) },
{ /* Signature M650 over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb02a) },
{ /* MX Master 3 mouse over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb023) },
{ /* MX Anywhere 3 mouse over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb025) },
{ /* MX Master 3S mouse over Bluetooth */
HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb034) },
{}
};

16
drivers/hid/hid-quirks.c
View File

@@ -546,16 +546,6 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
#endif
#if IS_ENABLED(CONFIG_HID_NINTENDO)
{ HID_USB_DEVICE(USB_VENDOR_ID_NINTENDO,
USB_DEVICE_ID_NINTENDO_PROCON) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
USB_DEVICE_ID_NINTENDO_PROCON) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
USB_DEVICE_ID_NINTENDO_JOYCONL) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
USB_DEVICE_ID_NINTENDO_JOYCONR) },
#endif
#if IS_ENABLED(CONFIG_HID_NTI)
{ HID_USB_DEVICE(USB_VENDOR_ID_NTI, USB_DEVICE_ID_USB_SUN) },
#endif
@@ -659,12 +649,6 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_GAMEPAD) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_ACTIONMOUSE) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_BOOKCOVER) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_UNIVERSAL_KBD) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_MULTI_HOGP_KBD) },
#endif
#if IS_ENABLED(CONFIG_HID_SONY)
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },

375
drivers/hid/hid-samsung.c
View File

@@ -125,358 +125,6 @@ static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev,
return 1;
}
static int samsung_kbd_input_mapping(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
if (!(HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE) ||
HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)))
return 0;
dbg_hid("samsung wireless keyboard input mapping event [0x%x]\n",
usage->hid & HID_USAGE);
if (HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)) {
switch (usage->hid & HID_USAGE) {
set_bit(EV_REP, hi->input->evbit);
/* Only for UK keyboard */
/* key found */
#ifdef CONFIG_HID_KK_UPGRADE
case 0x32:
samsung_kbd_mouse_map_key_clear(KEY_KBDILLUMTOGGLE);
break;
case 0x64:
samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
break;
#else
case 0x32:
samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
break;
case 0x64:
samsung_kbd_mouse_map_key_clear(KEY_102ND);
break;
#endif
/* Only for BR keyboard */
case 0x87:
samsung_kbd_mouse_map_key_clear(KEY_RO);
break;
default:
return 0;
}
}
if (HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)) {
switch (usage->hid & HID_USAGE) {
/* report 2 */
/* MENU */
case 0x040:
samsung_kbd_mouse_map_key_clear(KEY_MENU);
break;
case 0x18a:
samsung_kbd_mouse_map_key_clear(KEY_MAIL);
break;
case 0x196:
samsung_kbd_mouse_map_key_clear(KEY_WWW);
break;
case 0x19e:
samsung_kbd_mouse_map_key_clear(KEY_SCREENLOCK);
break;
case 0x221:
samsung_kbd_mouse_map_key_clear(KEY_SEARCH);
break;
case 0x223:
samsung_kbd_mouse_map_key_clear(KEY_HOMEPAGE);
break;
/* Smtart Voice Key */
case 0x300:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY13);
break;
/* RECENTAPPS */
case 0x301:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY1);
break;
/* APPLICATION */
case 0x302:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY2);
break;
/* Voice search */
case 0x305:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY4);
break;
/* QPANEL on/off */
case 0x306:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY5);
break;
/* SIP on/off */
case 0x307:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY3);
break;
/* LANG */
case 0x308:
samsung_kbd_mouse_map_key_clear(KEY_LANGUAGE);
break;
case 0x30a:
samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSDOWN);
break;
case 0x30b:
samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSUP);
break;
default:
return 0;
}
}
return 1;
}
static int samsung_gamepad_input_mapping(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
if (!(HID_UP_BUTTON == (usage->hid & HID_USAGE_PAGE) ||
HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)))
return 0;
dbg_hid("samsung wireless gamepad input mapping event [0x%x], %ld, %ld, [0x%x]\n",
usage->hid & HID_USAGE, hi->input->evbit[0], hi->input->absbit[0], usage->hid & HID_USAGE_PAGE);
if (HID_UP_BUTTON == (usage->hid & HID_USAGE_PAGE)) {
switch (usage->hid & HID_USAGE) {
case 0x01:
samsung_kbd_mouse_map_key_clear(BTN_A);
break;
case 0x02:
samsung_kbd_mouse_map_key_clear(BTN_B);
break;
case 0x03:
samsung_kbd_mouse_map_key_clear(BTN_C);
break;
case 0x04:
samsung_kbd_mouse_map_key_clear(BTN_X);
break;
case 0x05:
samsung_kbd_mouse_map_key_clear(BTN_Y);
break;
case 0x06:
samsung_kbd_mouse_map_key_clear(BTN_Z);
break;
case 0x07:
samsung_kbd_mouse_map_key_clear(BTN_TL);
break;
case 0x08:
samsung_kbd_mouse_map_key_clear(BTN_TR);
break;
case 0x09:
samsung_kbd_mouse_map_key_clear(BTN_TL2);
break;
case 0x0a:
samsung_kbd_mouse_map_key_clear(BTN_TR2);
break;
case 0x0b:
samsung_kbd_mouse_map_key_clear(BTN_SELECT);
break;
case 0x0c:
samsung_kbd_mouse_map_key_clear(BTN_START);
break;
case 0x0d:
samsung_kbd_mouse_map_key_clear(BTN_MODE);
break;
case 0x0e:
samsung_kbd_mouse_map_key_clear(BTN_THUMBL);
break;
case 0x0f:
samsung_kbd_mouse_map_key_clear(BTN_THUMBR);
break;
case 0x10:
samsung_kbd_mouse_map_key_clear(BTN_GAME);
break;
default:
return 0;
}
}
if (HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)) {
switch (usage->hid & HID_USAGE) {
case 0x040:
samsung_kbd_mouse_map_key_clear(KEY_MENU);
break;
case 0x223:
samsung_kbd_mouse_map_key_clear(KEY_HOMEPAGE);
break;
case 0x224:
samsung_kbd_mouse_map_key_clear(KEY_BACK);
break;
/* Screen Capture */
case 0x303:
samsung_kbd_mouse_map_key_clear(KEY_SYSRQ);
break;
default:
return 0;
}
}
return 1;
}
static int samsung_actionmouse_input_mapping(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
dbg_hid("samsung wireless actionmouse input mapping event [0x%x], [0x%x], %ld, %ld, [0x%x]\n",
usage->hid, usage->hid & HID_USAGE, hi->input->evbit[0], hi->input->absbit[0],
usage->hid & HID_USAGE_PAGE);
if (((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) && ((usage->hid & HID_USAGE_PAGE) != HID_UP_BUTTON))
return 0;
switch (usage->hid & HID_USAGE) {
case 0x301:
samsung_kbd_mouse_map_key_clear(KEY_RECENT);
break;
default:
return 0;
}
return 1;
}
static int samsung_universal_kbd_input_mapping(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
if (!(HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE) ||
HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)))
return 0;
dbg_hid("samsung wireless keyboard input mapping event [0x%x]\n",
usage->hid & HID_USAGE);
if (HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)) {
switch (usage->hid & HID_USAGE) {
set_bit(EV_REP, hi->input->evbit);
/* Only for UK keyboard */
/* key found */
#ifdef CONFIG_HID_KK_UPGRADE
case 0x32:
samsung_kbd_mouse_map_key_clear(KEY_KBDILLUMTOGGLE);
break;
case 0x64:
samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
break;
#else
case 0x32:
samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
break;
case 0x64:
samsung_kbd_mouse_map_key_clear(KEY_102ND);
break;
#endif
/* Only for BR keyboard */
case 0x87:
samsung_kbd_mouse_map_key_clear(KEY_RO);
break;
default:
return 0;
}
}
if (HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)) {
switch (usage->hid & HID_USAGE) {
/* report 2 */
/* MENU */
case 0x040:
samsung_kbd_mouse_map_key_clear(KEY_MENU);
break;
case 0x18a:
samsung_kbd_mouse_map_key_clear(KEY_MAIL);
break;
case 0x196:
samsung_kbd_mouse_map_key_clear(KEY_WWW);
break;
case 0x19e:
samsung_kbd_mouse_map_key_clear(KEY_SCREENLOCK);
break;
case 0x221:
samsung_kbd_mouse_map_key_clear(KEY_SEARCH);
break;
case 0x223:
samsung_kbd_mouse_map_key_clear(KEY_HOMEPAGE);
break;
/* RECENTAPPS */
case 0x301:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY1);
break;
/* APPLICATION */
case 0x302:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY2);
break;
/* Voice search */
case 0x305:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY4);
break;
/* QPANEL on/off */
case 0x306:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY5);
break;
/* SIP on/off */
case 0x307:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY3);
break;
/* LANG */
case 0x308:
samsung_kbd_mouse_map_key_clear(KEY_LANGUAGE);
break;
case 0x30a:
samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSDOWN);
break;
case 0x070:
samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSDOWN);
break;
case 0x30b:
samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSUP);
break;
case 0x06f:
samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSUP);
break;
/* S-Finder */
case 0x304:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY7);
break;
/* Screen Capture */
case 0x303:
samsung_kbd_mouse_map_key_clear(KEY_SYSRQ);
break;
/* Multi Window */
case 0x309:
samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY9);
break;
/* HotKey App 1 */
case 0x071:
samsung_kbd_mouse_map_key_clear(BTN_HOTKEY_APP1);
break;
/* HotKey App 2 */
case 0x072:
samsung_kbd_mouse_map_key_clear(BTN_HOTKEY_APP2);
break;
/* HotKey App 3 */
case 0x073:
samsung_kbd_mouse_map_key_clear(BTN_HOTKEY_APP3);
break;
/* Dex */
case 0x06e:
samsung_kbd_mouse_map_key_clear(KEY_DEX_ON);
break;
default:
return 0;
}
}
return 1;
}
static __u8 *samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
@@ -494,21 +142,6 @@ static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi,
if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product)
ret = samsung_kbd_mouse_input_mapping(hdev,
hi, field, usage, bit, max);
else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD)
ret = samsung_kbd_input_mapping(hdev,
hi, field, usage, bit, max);
else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_GAMEPAD)
ret = samsung_gamepad_input_mapping(hdev,
hi, field, usage, bit, max);
else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_ACTIONMOUSE)
ret = samsung_actionmouse_input_mapping(hdev,
hi, field, usage, bit, max);
else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_UNIVERSAL_KBD)
ret = samsung_universal_kbd_input_mapping(hdev,
hi, field, usage, bit, max);
else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_MULTI_HOGP_KBD)
ret = samsung_universal_kbd_input_mapping(hdev,
hi, field, usage, bit, max);
return ret;
}
@@ -519,6 +152,9 @@ static int samsung_probe(struct hid_device *hdev,
int ret;
unsigned int cmask = HID_CONNECT_DEFAULT;
if (!hid_is_usb(hdev))
return -EINVAL;
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "parse failed\n");
@@ -547,11 +183,6 @@ err_free:
static const struct hid_device_id samsung_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_GAMEPAD) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_ACTIONMOUSE) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_UNIVERSAL_KBD) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_MULTI_HOGP_KBD) },
{ }
};
MODULE_DEVICE_TABLE(hid, samsung_devices);

12
drivers/hid/uhid.c
View File

@@ -9,6 +9,7 @@
#include <linux/atomic.h>
#include <linux/compat.h>
#include <linux/cred.h>
#include <linux/device.h>
#include <linux/fs.h>
#include <linux/hid.h>
@@ -741,6 +742,17 @@ static ssize_t uhid_char_write(struct file *file, const char __user *buffer,
switch (uhid->input_buf.type) {
case UHID_CREATE:
/*
* 'struct uhid_create_req' contains a __user pointer which is
* copied from, so it's unsafe to allow this with elevated
* privileges (e.g. from a setuid binary) or via kernel_write().
*/
if (file->f_cred != current_cred()) {
pr_err_once("UHID_CREATE from different security context by process %d (%s), this is not allowed.\n",
task_tgid_vnr(current), current->comm);
ret = -EACCES;
goto unlock;
}
ret = uhid_dev_create(uhid, &uhid->input_buf);
break;
case UHID_CREATE2: