diff options
| author | nagalakshmi.nandigama@lsi.com <nagalakshmi.nandigama@lsi.com> | 2011-12-01 07:53:02 +0530 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-12-15 10:57:39 +0400 |
| commit | 4da7af9494b2f98a1503a2634059300c3e4615e6 (patch) | |
| tree | f72a460e0c710c685aee3e18277b1bc6de4a11d7 /drivers/scsi/mpt2sas | |
| parent | 30c43282f3d347f47f9e05199d2b14f56f3f2837 (diff) | |
| download | lwn-4da7af9494b2f98a1503a2634059300c3e4615e6.tar.gz lwn-4da7af9494b2f98a1503a2634059300c3e4615e6.zip | |
[SCSI] mpt2sas: Do not retry a timed out direct IO for warpdrive
When an I/O request to a WarpDrive is timed out by SML and if the
I/O request to the WarpDrive is sent as direct I/O then the aborted
direct I/O will be retried as normal Volume I/O and which results
in failure of Target Reset and results in host reset.
The fix is to not retry a failed IO to volume when the original
IO was sent as direct IO with an ioc status
MPI2_IOCSTATUS_SCSI_TASK_TERMINATED.
Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/mpt2sas')
| -rw-r--r-- | drivers/scsi/mpt2sas/mpt2sas_scsih.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index 8e2e9973df29..fd1ba744b423 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -4436,11 +4436,14 @@ _scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) scmd->result = DID_NO_CONNECT << 16; goto out; } + ioc_status = le16_to_cpu(mpi_reply->IOCStatus); /* * WARPDRIVE: If direct_io is set then it is directIO, * the failed direct I/O should be redirected to volume */ - if (_scsih_scsi_direct_io_get(ioc, smid)) { + if (_scsih_scsi_direct_io_get(ioc, smid) && + ((ioc_status & MPI2_IOCSTATUS_MASK) + != MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) { spin_lock_irqsave(&ioc->scsi_lookup_lock, flags); ioc->scsi_lookup[smid - 1].scmd = scmd; spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); @@ -4474,7 +4477,6 @@ _scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) xfer_cnt = le32_to_cpu(mpi_reply->TransferCount); scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_cnt); - ioc_status = le16_to_cpu(mpi_reply->IOCStatus); if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) log_info = le32_to_cpu(mpi_reply->IOCLogInfo); else |