scsi: elx: efct: Declare SCSI host template const

Make it explicit that the SCSI host template is not modified.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230322195515.1267197-33-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: elx: efct: Fix pointer error checking in debugfs init

debugfs_create_xxx routines, which return pointers, are being checked for
error by looking for NULL values. The routines may return pointer-munged
-Exxx codes, so they should be using IS_ERR() to adapt.

There are two cases:

- The first case is on initial directory creation, which actually doesn't
need to be checked. So remove the check.

- Creation of the sessions subdirectory. Modify this creation to create
under the initial directory created, and fix failure check.

Link: https://lore.kernel.org/r/20210618233004.83769-1-jsmart2021@gmail.com
Fixes: 4df84e846624 ("scsi: elx: efct: Driver initialization routines")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: elx: efct: Transport class host interface support

Integration with the scsi_fc_transport host interfaces.

Link: https://lore.kernel.org/r/20210601235512.20104-30-jsmart2021@gmail.com
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Co-developed-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: elx: efct: Transport and hardware teardown routines

Implement routines to detach transport and hardware objects.

Link: https://lore.kernel.org/r/20210601235512.20104-29-jsmart2021@gmail.com
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Co-developed-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: elx: efct: Driver initialization routines

Add driver definitions for:

- Emulex FC Target driver init, attach and hardware setup routines.

Link: https://lore.kernel.org/r/20210601235512.20104-19-jsmart2021@gmail.com
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Co-developed-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>