linux/drivers/hid/hid-debug.c, branch v5.14

Merge branch 'for-5.14/core' into for-linus

2021-06-30T07:03:51Z

- device unbinding locking fix from Dmitry Torokhov - support for programmable buttons (mapping to KEY_MACRO# event codes) from Thomas Weißschuh - various other small fixes and code style improvements

HID: input: Add support for Programmable Buttons

2021-06-24T13:40:59Z

Map them to KEY_MACRO# event codes. These buttons are defined by HID as follows: "The user defines the function of these buttons to control software applications or GUI objects." This matches the semantics of the KEY_MACRO# input event codes that Linux supports. Also add support for HID "Named Array" collections. Also add hid-debug support for KEY_MACRO#. Signed-off-by: Thomas Weißschuh Signed-off-by: Jiri Kosina

HID: hid-debug: recognize KEY_ASSISTANT and KEY_KBD_LAYOUT_NEXT

2021-05-05T12:31:05Z

Add missing descriptions for KEY_ASSISTANT and KEY_KBD_LAYOUT_NEXT. Signed-off-by: Dmitry Torokhov Signed-off-by: Jiri Kosina

HID: hid-input: add mapping for emoji picker key

2021-05-05T12:31:05Z

HUTRR101 added a new usage code for a key that is supposed to invoke and dismiss an emoji picker widget to assist users to locate and enter emojis. This patch adds a new key definition KEY_EMOJI_PICKER and maps 0x0c/0x0d9 usage code to this new keycode. Additionally hid-debug is adjusted to recognize this new usage code as well. Signed-off-by: Dmitry Torokhov Signed-off-by: Jiri Kosina

HID: input: map battery capacity (00850065)

2021-04-07T11:15:17Z

This is the capacity in percentage, relative to design capacity. Specifically, it is present in Apple Magic Mouse 2. In contrast, usage 00850064 is also the capacity in percentage, but is relative to full capacity. It is not mapped here because I don't have such device. Signed-off-by: John Chen Signed-off-by: Jiri Kosina

HID: hid-debug: fix nonblocking read semantics wrt EIO/ERESTARTSYS

2020-09-09T06:47:38Z

When the file has been open in non-blocking mode, EIO or ERESTARTSYS would never be returned even if they should (for example when device has been unplugged, you want EIO and not EAGAIN to be returned). Move the O_NONBLOCK check after other checks have been performed. Based on similar to patches hidraw and hiddev by Founder Fang and Jiri Kosina . Signed-off-by: Laurent Gauthier Signed-off-by: Jiri Kosina

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30T18:26:35Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman

HID: debug: fix race condition with between rdesc_show() and device removal

2019-03-19T14:41:08Z

There is a race condition that could happen if hid_debug_rdesc_show() is running while hdev is in the process of going away (device removal, system suspend, etc) which could result in NULL pointer dereference: BUG: unable to handle kernel paging request at 0000000783316040 CPU: 1 PID: 1512 Comm: getevent Tainted: G U O 4.19.20-quilt-2e5dc0ac-00029-gc455a447dd55 #1 RIP: 0010:hid_dump_device+0x9b/0x160 Call Trace: hid_debug_rdesc_show+0x72/0x1d0 seq_read+0xe0/0x410 full_proxy_read+0x5f/0x90 __vfs_read+0x3a/0x170 vfs_read+0xa0/0x150 ksys_read+0x58/0xc0 __x64_sys_read+0x1a/0x20 do_syscall_64+0x55/0x110 entry_SYSCALL_64_after_hwframe+0x49/0xbe Grab driver_input_lock to make sure the input device exists throughout the whole process of dumping the rdesc. [jkosina@suse.cz: update changelog a bit] Signed-off-by: he, bo Signed-off-by: "Zhang, Jun" Signed-off-by: Jiri Kosina

HID: debug: fix the ring buffer implementation

2019-01-29T11:09:11Z

Ring buffer implementation in hid_debug_event() and hid_debug_events_read() is strange allowing lost or corrupted data. After commit 717adfdaf147 ("HID: debug: check length before copy_to_user()") it is possible to enter an infinite loop in hid_debug_events_read() by providing 0 as count, this locks up a system. Fix this by rewriting the ring buffer implementation with kfifo and simplify the code. This fixes CVE-2019-3819. v2: fix an execution logic and add a comment v3: use __set_current_state() instead of set_current_state() Link: https://bugzilla.redhat.com/show_bug.cgi?id=1669187 Cc: stable@vger.kernel.org # v4.18+ Fixes: cd667ce24796 ("HID: use debugfs for events/reports dumping") Fixes: 717adfdaf147 ("HID: debug: check length before copy_to_user()") Signed-off-by: Vladis Dronov Reviewed-by: Oleg Nesterov Signed-off-by: Benjamin Tissoires

HID: debug: Change to use DEFINE_SHOW_ATTRIBUTE macro

2018-12-19T13:20:14Z

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Yangtao Li Signed-off-by: Jiri Kosina