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evdev: add a run-time check to avoid re-using model flags

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Only runs on the LIBINPUT_MODEL_* flags, the ID_INPUT_TRACKBALL flag is an
exception.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2018-04-13 09:05:02 +10:00
parent f37c1dc66a
commit b0a0627ae2
1 changed files with 7 additions and 0 deletions
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7
src/evdev.c
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@ -1291,8 +1291,15 @@ evdev_read_model_flags(struct evdev_device *device)
}; };
const struct model_map *m = model_map; const struct model_map *m = model_map;
uint32_t model_flags = 0; uint32_t model_flags = 0;
uint32_t all_model_flags = 0;
while (m->property) { while (m->property) {
/* Check for flag re-use */
if (strneq("LIBINPUT_MODEL_", m->property, 15)) {
assert((all_model_flags & m->model) == 0);
all_model_flags |= m->model;
}
if (parse_udev_flag(device, if (parse_udev_flag(device,
device->udev_device, device->udev_device,
m->property)) { m->property)) {