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[SCSI] mpt2sas: Do not call sas_is_tlr_enabled for RAID volumes.

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For RAID volume sas_is_tlr_enabled call will hit BUG at
scsi_transport_sas.c:163, since raid volume
is not visible to sas transport layer.
Now Added check to make sure arg pass in sas_is_tlr_enabled() is not a volume.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Kashyap, Desai 2010-02-17 16:08:36 +05:30 committed by James Bottomley
parent 34c2b71299
commit 3ed215259f
1 changed files with 5 additions and 3 deletions
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8
drivers/scsi/mpt2sas/mpt2sas_scsih.c
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@ -3062,8 +3062,9 @@ _scsih_qcmd(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
} else
mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
if (sas_is_tlr_enabled(scmd->device))
/* Make sure Device is not raid volume */
if (!_scsih_is_raid(&scmd->device->sdev_gendev) &&
sas_is_tlr_enabled(scmd->device))
mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
@ -3452,7 +3453,8 @@ _scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
le32_to_cpu(mpi_reply->ResponseInfo) & 0xFF;
if (!sas_device_priv_data->tlr_snoop_check) {
sas_device_priv_data->tlr_snoop_check++;
if (sas_is_tlr_enabled(scmd->device) &&
if (!_scsih_is_raid(&scmd->device->sdev_gendev) &&
sas_is_tlr_enabled(scmd->device) &&
response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME) {
sas_disable_tlr(scmd->device);
sdev_printk(KERN_INFO, scmd->device, "TLR disabled\n");