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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-01-08 15:04:07 +1000 |
|---|---|---|
| committer | Peter Hutterer <peter.hutterer@who-t.net> | 2013-01-08 15:07:04 +1000 |
| commit | 454194f4b530af5d7f92a3b28c28495b4faac547 (patch) | |
| tree | 3cf29e70d669991b0b3bad68d2a67f63f6ba2e01 | |
| parent | Drop special XKB option handling (diff) | |
| download | xf86-input-evdev-454194f4b530af5d7f92a3b28c28495b4faac547.tar.gz xf86-input-evdev-454194f4b530af5d7f92a3b28c28495b4faac547.tar.bz2 xf86-input-evdev-454194f4b530af5d7f92a3b28c28495b4faac547.zip | |
Force a button if MT axes are present and it is not a gamepad
We expect at least BTN_TOUCH for anything with MT axes, but devices that
don't have that need a button class regardless. Some gamepads define
MT axes but no buttons, causing a bug in the server when they post a
TouchBegin.
[ 97436.293] (EE) BUG: triggered 'if (!b || !v)'
[ 97436.293] (EE) BUG: exevents.c:929 in UpdateDeviceState()
So, ignore it, if it is a joystick (e. g. if it have BTN_JOYSTICK defined).
Otherwise, fake a button.
This patch basically merges two patches written by Peter Hutterer
<peter.hutterer@who-t.net>.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
| -rw-r--r-- | src/evdev.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/evdev.c b/src/evdev.c index 7b355d7..5667dc1 100644 --- a/src/evdev.c +++ b/src/evdev.c @@ -2160,8 +2160,20 @@ EvdevProbe(InputInfoPtr pInfo) xf86IDrvMsg(pInfo, X_PROBED, "Found absolute axes\n"); pEvdev->flags |= EVDEV_ABSOLUTE_EVENTS; - if (has_mt) + if (has_mt) { xf86IDrvMsg(pInfo, X_PROBED, "Found absolute multitouch axes\n"); + if (num_buttons == 0) { + if (EvdevBitIsSet(pEvdev->key_bitmask, BTN_JOYSTICK)) { + xf86IDrvMsg(pInfo, X_INFO, "Device is a Joystick with MT without buttons. Ignoring it.\n"); + goto out; + } else { + xf86IDrvMsg(pInfo, X_INFO, "No buttons found, faking one.\n"); + num_buttons = 1; + pEvdev->num_buttons = num_buttons; + pEvdev->flags |= EVDEV_BUTTON_EVENTS; + } + } + } if ((EvdevBitIsSet(pEvdev->abs_bitmask, ABS_X) && EvdevBitIsSet(pEvdev->abs_bitmask, ABS_Y))) { @@ -2276,6 +2288,7 @@ EvdevProbe(InputInfoPtr pInfo) pEvdev->flags |= EVDEV_RELATIVE_EVENTS; } +out: if (rc) xf86IDrvMsg(pInfo, X_WARNING, "Don't know how to use device\n"); |