+static void scsi_invoke_strategy_handler(struct Scsi_Host *shost)
+{
+ int rtn;
+ struct list_head *lh, *lh_sf;
+ struct scsi_cmnd *scmd;
+ unsigned long flags;
+ LIST_HEAD(eh_work_q);
+ LIST_HEAD(eh_done_q);
+
+ rtn = shost->hostt->eh_strategy_handler(shost);
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ list_splice_init(&shost->eh_cmd_q, &eh_work_q);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
+ SCSI_LOG_ERROR_RECOVERY(1, scsi_eh_prt_fail_stats(shost, &eh_work_q));
+
+ list_for_each_safe(lh, lh_sf, &eh_work_q) {
+ scmd = list_entry(lh, struct scsi_cmnd, eh_entry);
+
+ if (scsi_eh_eflags_chk(scmd, SCSI_EH_CANCEL_CMD) ||
+ !SCSI_SENSE_VALID(scmd))
+ continue;
+ scmd->retries = scmd->allowed;
+ scsi_eh_finish_cmd(scmd, &eh_done_q);
+ }
+
+ if (!list_empty(&eh_work_q))
+ if (!scsi_eh_abort_cmds(&eh_work_q, &eh_done_q))
+ scsi_eh_ready_devs(shost, &eh_work_q, &eh_done_q);
The scsi_eh_abort_cmds() call doesn't do much, since all calls to scsi_try_to_abort_cmd() will fail due to libata's lack of EH abort handler.
The latter code will print "aborting cmd failed" for the command, and not much else.
Jeff
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