[PATCH v2 12/13] mpt3sas: Fix nvme drives checking for tlr.

Suganath Prabu S
2017-07-14T13:24:43Z

Check for NVMe drives before enabling or checking tlr.

Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
---
drivers/scsi/mpt3sas/mpt3sas_scsih.c | 22 ++++++++++++++++------
1 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 4ac40bf..c34001b 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -2014,6 +2014,14 @@ scsih_is_raid(struct device *dev)
return (sdev->channel == RAID_CHANNEL) ? 1 : 0;
}

+static int
+scsih_is_nvme(struct device *dev)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+
+ return (sdev->channel == PCIE_CHANNEL) ? 1 : 0;
+}
+
/**
* scsih_get_resync - get raid volume resync percent complete
* @dev the device struct object
@@ -4811,8 +4819,9 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
/* Make sure Device is not raid volume.
* We do not expose raid functionality to upper layer for warpdrive.
*/
- if (!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev)
- && sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
+ if (((!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev))
+ && !scsih_is_nvme(&scmd->device->sdev_gendev))
+ && 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);
@@ -4857,8 +4866,8 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)

raid_device = sas_target_priv_data->raid_device;
if (raid_device && raid_device->direct_io_enabled)
- mpt3sas_setup_direct_io(ioc, scmd, raid_device, mpi_request,
- smid);
+ mpt3sas_setup_direct_io(ioc, scmd,
+ raid_device, mpi_request, smid);

if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) {
if (sas_target_priv_data->flags & MPT_TARGET_FASTPATH_IO) {
@@ -5406,9 +5415,10 @@ _scsih_io_done(struct MPT3SAS_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 (!ioc->is_warpdrive &&
+ if ((!ioc->is_warpdrive &&
!scsih_is_raid(&scmd->device->sdev_gendev) &&
- sas_is_tlr_enabled(scmd->device) &&
+ !scsih_is_nvme(&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");
--
1.7.1