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Introduce a bus-specific probe, remove and shutdown function. For now this only allows to get rid of a cast of the generic device to a SCSI device in the drivers and changes the remove prototype to return void---a non-zero return value is ignored anyhow. The objective is to get rid of users of struct device_driver callbacks .probe(), .remove() and .shutdown() to eventually remove these. Until all SCSI drivers are converted, this results in a runtime warning about the drivers needing an update because there is a bus probe function and a driver probe function. The in-tree drivers are fixed by the following commits. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Reviewed-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Link: https://patch.msgid.link/a54e363a3fd2054fb924afd7df44bca7f444b5f1.1766133330.git.u.kleine-koenig@baylibre.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>