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scsi: core: Make scsi_result_to_blk_status() recognize CONDITION MET

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Ensure that CONDITION MET and other non-zero status values that indicate
success are translated into BLK_STS_OK.

Signed-off-by: Bart Van Assche <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Cc: Douglas Gilbert <[email protected]>
Cc: Damien Le Moal <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Lee Duncan <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
This commit is contained in:
Bart Van Assche 2018-04-05 10:33:01 -07:00 • committed by Martin K. Petersen
commit f4abab3f18
1 changed files with 9 additions and 0 deletions
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9
drivers/scsi/scsi_lib.c
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@ -733,6 +733,15 @@ static bool scsi_end_request(struct request *req, blk_status_t error,
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
* to handle the case when a SCSI LLD sets result to
* DRIVER_SENSE << 24 without setting SAM_STAT_CHECK_CONDITION.
*/
if (scsi_status_is_good(result) && (result & ~0xff) == 0)
return BLK_STS_OK;
return BLK_STS_IOERR;
case DID_TRANSPORT_FAILFAST:
return BLK_STS_TRANSPORT;
case DID_TARGET_FAILURE: