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The mcp251xfd_chip_stop() function tries the best to stop the chip and put it into sleep mode. It continues, even if some intermediate steps fail. As none of the callers use the return value, let this function return void. Link: https://lore.kernel.org/all/20220207131047.282110-6-mkl@pengutronix.de Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>