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Some devices (such as Smaug) report having MOTION_SENSE_FIFO but do not support controlling the behaviour of the FIFO interrupt via the FIFO_INT_ENABLE command and in these cases the interrupt is always enabled. However, currently the code assumes that if MOTION_SENSE_FIFO is supported then so is FIFO_INT_ENABLE, and when it tries to enable the interrupt via this command and an unsupported device reports a failure it then propagates this into failing the sensors probe. Interpret the return value -EINVAL as a device where FIFO_INT_ENABLE is not present and the interrupt is always enabled. Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt> Link: https://lore.kernel.org/r/20251112-diogo-smaug_ec_sensorhub-v1-1-f71d4e9eb9d4@tecnico.ulisboa.pt Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>