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f7d4f1bf57
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>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _SCSI_SCSI_DRIVER_H
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#define _SCSI_SCSI_DRIVER_H
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#include <linux/blk_types.h>
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#include <linux/device.h>
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#include <scsi/scsi_cmnd.h>
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struct module;
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struct request;
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struct scsi_driver {
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struct device_driver gendrv;
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int (*probe)(struct scsi_device *);
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void (*remove)(struct scsi_device *);
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void (*shutdown)(struct scsi_device *);
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int (*resume)(struct device *);
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void (*rescan)(struct device *);
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blk_status_t (*init_command)(struct scsi_cmnd *);
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void (*uninit_command)(struct scsi_cmnd *);
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int (*done)(struct scsi_cmnd *);
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int (*eh_action)(struct scsi_cmnd *, int);
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void (*eh_reset)(struct scsi_cmnd *);
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};
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#define to_scsi_driver(drv) \
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container_of((drv), struct scsi_driver, gendrv)
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#define scsi_register_driver(drv) \
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__scsi_register_driver(drv, THIS_MODULE)
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int __scsi_register_driver(struct scsi_driver *, struct module *);
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#define scsi_unregister_driver(drv) \
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driver_unregister(&(drv)->gendrv);
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extern int scsi_register_interface(struct class_interface *);
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#define scsi_unregister_interface(intf) \
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class_interface_unregister(intf)
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/* make sure not to use it with passthrough commands */
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static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
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{
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return to_scsi_driver(cmd->device->sdev_gendev.driver);
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}
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#endif /* _SCSI_SCSI_DRIVER_H */
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