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mpt3sas: Fix use sas_is_tlr_enabled API before enabling MPI2_SCSIIO_CONTROL_TLR_ON flag 

Before enabling MPI2_SCSIIO_CONTROL_TLR_ON flag in MPI SCSI IO request
message, check whether TLR is enabled on the drive using
'sas_is_tlr_enabled' API.

Actually in the driver code, driver is using below API's

1. sas_enable_tlr() - to enable the TLR
2. sas_disable_tlr() - to disable the TLR
3. sas_is_tlr_enabled() - to check whether TLR is enabled or not.

but in scsih_qcmd() we have missed to use sas_is_tlr_enabled() API,
instead we checking for TLR bit from flag field of driver's 'struct
MPT3SAS_DEVIC' structure. which is corrected with this patch.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sreekanth Reddy 2015-11-12 23:40:37 +05:30 committed by Martin K. Petersen
parent 2c5d16d6a9
commit 15de0de29f
1 changed files with 1 additions and 2 deletions
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3
drivers/scsi/mpt3sas/mpt3sas_scsih.c
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@ -3905,8 +3905,7 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
* We do not expose raid functionality to upper layer for warpdrive.
*/
if (!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev)
&& (sas_device_priv_data->flags & MPT_DEVICE_TLR_ON) &&
scmd->cmd_len != 32)
&& sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);