[SCSI] mpt2sas: Return DID_TRANSPORT_DISRUPTED in nexus... (e4e7c7ed) · Commits · 戴 / test

[SCSI] mpt2sas: Return DID_TRANSPORT_DISRUPTED in nexus loss,SCSI_MLQUEUE_DEVICE_BUSY if device is busy 1 Its observed that the OS was sending request to the driver after it had been put into blocking state, so the driver was modified to return SCSI_MLQUEUE_DEVICE_BUSY. 2. Driver will return DID_TRANSPORT_DISRUPTED when sdev is haivng nexus loss. This occurrs when sdev is blocked, between the MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING and MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING events. Signed-off-by:

Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by:

Eric Moore <Eric.moore@lsi.com> Signed-off-by:

James Bottomley <James.Bottomley@suse.de>

drivers/scsi/mpt2sas/mpt2sas_scsih.c

+3 −4

Original line number	Diff line number	Diff line
		@@ -2885,7 +2885,7 @@ _scsih_qcmd(struct scsi_cmnd scmd, void (done)(struct scsi_cmnd *))
		}

		/* see if we are busy with task managment stuff */
		if (sas_target_priv_data->tm_busy)
		if (sas_device_priv_data->block \|\| sas_target_priv_data->tm_busy)
		return SCSI_MLQUEUE_DEVICE_BUSY;
		else if (ioc->shost_recovery \|\| ioc->ioc_link_reset_in_progress)
		return SCSI_MLQUEUE_HOST_BUSY;
		@@ -3351,10 +3351,9 @@ _scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)

		case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
		if (sas_device_priv_data->block) {
		scmd->result = (DID_BUS_BUSY << 16);
		break;
		scmd->result = DID_TRANSPORT_DISRUPTED << 16;
		goto out;
		}

		case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
		case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
		scmd->result = DID_RESET << 16;

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