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scsi: core: Kill message byte 

Remove last vestiges of SCSI status message bytes.

Link: https://lore.kernel.org/r/20210427083046.31620-39-hare@suse.de
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2021-04-27 10:30:44 +02:00 committed by Martin K. Petersen
parent 54cf31d07a
commit a7479a8477
3 changed files with 5 additions and 39 deletions
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6
Documentation/scsi/scsi_mid_low_api.rst
View File

@ -1172,9 +1172,9 @@ Members of interest:
of 0 implies a successfully completed command (and all
data (if any) has been transferred to or from the SCSI
target device). 'result' is a 32 bit unsigned integer that
can be viewed as 4 related bytes. The SCSI status value is
in the LSB. See include/scsi/scsi.h status_byte(),
msg_byte() and host_byte() macros and related constants.
can be viewed as 2 related bytes. The SCSI status value is
in the LSB. See include/scsi/scsi.h status_byte() and
host_byte() macros and related constants.
sense_buffer
- an array (maximum size: SCSI_SENSE_BUFFERSIZE bytes) that
should be written when the SCSI status (LSB of 'result')

5
drivers/scsi/scsi_lib.c
View File

@ -591,10 +591,7 @@ static blk_status_t scsi_result_to_blk_status(struct scsi_cmnd *cmd, int result)
{
switch (host_byte(result)) {
case DID_OK:
/*
* Also check the other bytes than the status byte in result
*/
if (scsi_status_is_good(result) && (result & ~0xff) == 0)
if (scsi_status_is_good(result))
return BLK_STS_OK;
return BLK_STS_IOERR;
case DID_TRANSPORT_FAILFAST:

33
include/trace/events/scsi.h
View File

@ -124,37 +124,6 @@
scsi_hostbyte_name(DID_TRANSPORT_DISRUPTED), \
scsi_hostbyte_name(DID_TRANSPORT_FAILFAST))
#define scsi_msgbyte_name(result) { result, #result }
#define show_msgbyte_name(val) \
__print_symbolic(val, \
scsi_msgbyte_name(COMMAND_COMPLETE), \
scsi_msgbyte_name(EXTENDED_MESSAGE), \
scsi_msgbyte_name(SAVE_POINTERS), \
scsi_msgbyte_name(RESTORE_POINTERS), \
scsi_msgbyte_name(DISCONNECT), \
scsi_msgbyte_name(INITIATOR_ERROR), \
scsi_msgbyte_name(ABORT_TASK_SET), \
scsi_msgbyte_name(MESSAGE_REJECT), \
scsi_msgbyte_name(NOP), \
scsi_msgbyte_name(MSG_PARITY_ERROR), \
scsi_msgbyte_name(LINKED_CMD_COMPLETE), \
scsi_msgbyte_name(LINKED_FLG_CMD_COMPLETE), \
scsi_msgbyte_name(TARGET_RESET), \
scsi_msgbyte_name(ABORT_TASK), \
scsi_msgbyte_name(CLEAR_TASK_SET), \
scsi_msgbyte_name(INITIATE_RECOVERY), \
scsi_msgbyte_name(RELEASE_RECOVERY), \
scsi_msgbyte_name(CLEAR_ACA), \
scsi_msgbyte_name(LOGICAL_UNIT_RESET), \
scsi_msgbyte_name(SIMPLE_QUEUE_TAG), \
scsi_msgbyte_name(HEAD_OF_QUEUE_TAG), \
scsi_msgbyte_name(ORDERED_QUEUE_TAG), \
scsi_msgbyte_name(IGNORE_WIDE_RESIDUE), \
scsi_msgbyte_name(ACA), \
scsi_msgbyte_name(QAS_REQUEST), \
scsi_msgbyte_name(BUS_DEVICE_RESET), \
scsi_msgbyte_name(ABORT))
#define scsi_statusbyte_name(result) { result, #result }
#define show_statusbyte_name(val) \
__print_symbolic(val, \
@ -316,7 +285,7 @@ DECLARE_EVENT_CLASS(scsi_cmd_done_timeout_template,
__print_hex(__get_dynamic_array(cmnd), __entry->cmd_len),
"DRIVER_OK",
show_hostbyte_name(((__entry->result) >> 16) & 0xff),
show_msgbyte_name(((__entry->result) >> 8) & 0xff),
"COMMAND_COMPLETE",
show_statusbyte_name(__entry->result & 0xff))
);