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| author |   Bart Van Assche <bvanassche@acm.org> | 2021-04-15 15:08:11 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2021-04-15 22:44:40 -0400 |
| commit | b8e162f9e7e2da6e823a4984d6aa0523e278babf (patch) | |
| tree | fcc0568d9fd33460ed837277c91c72858fe3a408 /include/scsi/scsi_dh.h | |
| parent | scsi: core: Modify the scsi_send_eh_cmnd() return value for the SDEV_BLOCK case (diff) | |
| download | linux-dev-b8e162f9e7e2da6e823a4984d6aa0523e278babf.tar.xz linux-dev-b8e162f9e7e2da6e823a4984d6aa0523e278babf.zip | |
scsi: core: Introduce enum scsi_disposition
Improve readability of the code in the SCSI core by introducing an
enumeration type for the values used internally that decide how to continue
processing a SCSI command. The eh_*_handler return values have not been
changed because that would involve modifying all SCSI drivers.
The output of the following command has been inspected to verify that no
out-of-range values are assigned to a variable of type enum
scsi_disposition:
KCFLAGS=-Wassign-enum make CC=clang W=1 drivers/scsi/
Link: https://lore.kernel.org/r/20210415220826.29438-6-bvanassche@acm.org
Cc: Christoph Hellwig <hch@lst.de>
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi/scsi_dh.h')
| -rw-r--r-- | include/scsi/scsi_dh.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/scsi/scsi_dh.h b/include/scsi/scsi_dh.h index a9f782fe732a..4df943c1b90b 100644 --- a/include/scsi/scsi_dh.h +++ b/include/scsi/scsi_dh.h @@ -52,7 +52,8 @@ struct scsi_device_handler { /* Filled by the hardware handler */ struct module *module; const char *name; - int (*check_sense)(struct scsi_device *, struct scsi_sense_hdr *); + enum scsi_disposition (*check_sense)(struct scsi_device *, + struct scsi_sense_hdr *); int (*attach)(struct scsi_device *); void (*detach)(struct scsi_device *); int (*activate)(struct scsi_device *, activate_complete, void *); |