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As suggested by Vincent Mailhol, declare struct esd_usb_msg as a union instead of a struct. Then replace all msg->msg.something constructs, that make use of esd_usb_msg, with simpler and prettier looking msg->something variants. Link: https://lore.kernel.org/all/CAMZ6RqKRzJwmMShVT9QKwiQ5LJaQupYqkPkKjhRBsP=12QYpfA@mail.gmail.com/ Suggested-by: Vincent MAILHOL <mailhol.vincent@wanadoo.fr> Signed-off-by: Frank Jungclaus <frank.jungclaus@esd.eu> Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Link: https://lore.kernel.org/all/20230222163754.3711766-1-frank.jungclaus@esd.eu Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>