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| author | Bart Van Assche <bvanassche@acm.org> | 2021-04-16 01:08:11 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-04-16 05:44:40 +0300 |
| commit | b8e162f9e7e2da6e823a4984d6aa0523e278babf (patch) | |
| tree | fcc0568d9fd33460ed837277c91c72858fe3a408 /include/scsi/scsi.h | |
| parent | 280e91b026653af77296b5feb54f16d85973b104 (diff) | |
| download | linux-b8e162f9e7e2da6e823a4984d6aa0523e278babf.tar.xz | |
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.h')
| -rw-r--r-- | include/scsi/scsi.h | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index e75cca25338a..246ced401683 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -180,16 +180,17 @@ static inline int scsi_is_wlun(u64 lun) /* * Internal return values. */ - -#define NEEDS_RETRY 0x2001 -#define SUCCESS 0x2002 -#define FAILED 0x2003 -#define QUEUED 0x2004 -#define SOFT_ERROR 0x2005 -#define ADD_TO_MLQUEUE 0x2006 -#define TIMEOUT_ERROR 0x2007 -#define SCSI_RETURN_NOT_HANDLED 0x2008 -#define FAST_IO_FAIL 0x2009 +enum scsi_disposition { + NEEDS_RETRY = 0x2001, + SUCCESS = 0x2002, + FAILED = 0x2003, + QUEUED = 0x2004, + SOFT_ERROR = 0x2005, + ADD_TO_MLQUEUE = 0x2006, + TIMEOUT_ERROR = 0x2007, + SCSI_RETURN_NOT_HANDLED = 0x2008, + FAST_IO_FAIL = 0x2009, +}; /* * Midlevel queue return values. |