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Commit 9524c682 authored by Dan Williams's avatar Dan Williams Committed by James Bottomley
Browse files

[SCSI] libsas: add sas_eh_abort_handler 



When recovering failed eh-cmnds let the lldd attempt an abort via
scsi_abort_eh_cmnd before escalating.

Reviewed-by: default avatarJacek Danecki <jacek.danecki@intel.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 5db45bdc

drivers/scsi/libsas/sas_scsi_host.c

+21 −0
Original line number Diff line number Diff line
@@ -531,6 +531,27 @@ static int sas_queue_reset(struct domain_device *dev, int reset_type, int lun, i 
	return FAILED;

}



int sas_eh_abort_handler(struct scsi_cmnd *cmd)

{

	int res;

	struct sas_task *task = TO_SAS_TASK(cmd);

	struct Scsi_Host *host = cmd->device->host;

	struct sas_internal *i = to_sas_internal(host->transportt);



	if (current != host->ehandler)

		return FAILED;



	if (!i->dft->lldd_abort_task)

		return FAILED;



	res = i->dft->lldd_abort_task(task);

	if (res == TMF_RESP_FUNC_SUCC || res == TMF_RESP_FUNC_COMPLETE)

		return SUCCESS;



	return FAILED;

}

EXPORT_SYMBOL_GPL(sas_eh_abort_handler);



/* Attempt to send a LUN reset message to a device */

int sas_eh_device_reset_handler(struct scsi_cmnd *cmd)

{

include/scsi/libsas.h

+1 −0
Original line number Diff line number Diff line
@@ -720,6 +720,7 @@ void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *); 
void sas_init_dev(struct domain_device *);



void sas_task_abort(struct sas_task *);

int sas_eh_abort_handler(struct scsi_cmnd *cmd);

int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);

int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd);