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| author | Mark Brown <broonie@kernel.org> | 2018-06-01 11:40:19 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-06-01 11:40:19 +0100 |
| commit | 91983dd5325297de4a2b6e1e3f22497604b6c687 (patch) | |
| tree | 82a440219533c59dde336b383f89bcfe43da3aa5 /drivers/scsi/scsi_lib.c | |
| parent | c36e3982af7020ff66886b6a7d673a8a471c4eac (diff) | |
| parent | 9c465aceb29ae6033c9021cc38a7dd219d9edb43 (diff) | |
Merge branch 'linux-linaro-lsk-v4.14' into linux-linaro-lsk-v4.14-rtlsk-v4.14-18.05-rt
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 359386730523..bfd8f12d4e9a 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -855,6 +855,17 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) /* for passthrough error may be set */ error = BLK_STS_OK; } + /* + * Another corner case: the SCSI status byte is non-zero but 'good'. + * Example: PRE-FETCH command returns SAM_STAT_CONDITION_MET when + * it is able to fit nominated LBs in its cache (and SAM_STAT_GOOD + * if it can't fit). Treat SAM_STAT_CONDITION_MET and the related + * intermediate statuses (both obsolete in SAM-4) as good. + */ + if (status_byte(result) && scsi_status_is_good(result)) { + result = 0; + error = BLK_STS_OK; + } /* * special case: failed zero length commands always need to |