The current code has the profile ref the device, but the device has no back-ref to
the profile. The following code will free the profile from underneath the
client, despite the caller still having a valid ref:
p = ratbag_device_get_profile_by_index(device, 0);
ratbag_profile_ref(p);
ratbag_device_unref(device);
Fix this by not using refs internally. After probe, the device is static
anyway, so the various refs internally aren't needed. Instead, we also ref/unref
the parent struct whenever we ref/unref a struct. Thus, whenevever the device
refcount reaches zero, we know the caller has no ref active.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Two components are added here: a test driver that takes a struct
ratbag_test_device and sets that device up as a ratbag device.
That device is returned to the tests and then checked for sanity.
The ratbag_device_new_test_device() requires the environment variable
RATBAG_TEST set, otherwise we abort. It's also 'hidden' in a separate source
file, so it won't show up in doxygen. And if the test are disabled, this
function does nothing and the test driver never gets registered.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
