Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[platform/kernel/linux-rpi.git] / drivers / input / joydev.c

diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c
index d806f6b..a2b5fbb 100644 (file)
--- a/drivers/input/joydev.c
+++ b/drivers/input/joydev.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Joystick device driver for the input driver suite.
  *
  * Copyright (c) 1999-2002 Vojtech Pavlik
  * Copyright (c) 1999 Colin Van Dyke
- *
- * 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.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -812,6 +808,7 @@ static bool joydev_dev_is_blacklisted(struct input_dev *dev)
 static bool joydev_dev_is_absolute_mouse(struct input_dev *dev)
 {
        DECLARE_BITMAP(jd_scratch, KEY_CNT);
+       bool ev_match = false;
 
        BUILD_BUG_ON(ABS_CNT > KEY_CNT || EV_CNT > KEY_CNT);
 
@@ -830,17 +827,36 @@ static bool joydev_dev_is_absolute_mouse(struct input_dev *dev)
         * considered to be an absolute mouse if the following is
         * true:
         *
-        * 1) Event types are exactly EV_ABS, EV_KEY and EV_SYN.
+        * 1) Event types are exactly
+        *      EV_ABS, EV_KEY and EV_SYN
+        *    or
+        *      EV_ABS, EV_KEY, EV_SYN and EV_MSC
+        *    or
+        *      EV_ABS, EV_KEY, EV_SYN, EV_MSC and EV_REL.
         * 2) Absolute events are exactly ABS_X and ABS_Y.
         * 3) Keys are exactly BTN_LEFT, BTN_RIGHT and BTN_MIDDLE.
         * 4) Device is not on "Amiga" bus.
         */
 
        bitmap_zero(jd_scratch, EV_CNT);
+       /* VMware VMMouse, HP ILO2 */
        __set_bit(EV_ABS, jd_scratch);
        __set_bit(EV_KEY, jd_scratch);
        __set_bit(EV_SYN, jd_scratch);
-       if (!bitmap_equal(jd_scratch, dev->evbit, EV_CNT))
+       if (bitmap_equal(jd_scratch, dev->evbit, EV_CNT))
+               ev_match = true;
+
+       /* HP ILO2, AMI BMC firmware */
+       __set_bit(EV_MSC, jd_scratch);
+       if (bitmap_equal(jd_scratch, dev->evbit, EV_CNT))
+               ev_match = true;
+
+       /* VMware Virtual USB Mouse, QEMU USB Tablet, ATEN BMC firmware */
+       __set_bit(EV_REL, jd_scratch);
+       if (bitmap_equal(jd_scratch, dev->evbit, EV_CNT))
+               ev_match = true;
+
+       if (!ev_match)
                return false;
 
        bitmap_zero(jd_scratch, ABS_CNT);