In cases that it is not ready to unjam host, the operation could be
deferred by yielding cpu since busy testing earns little help.
Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx>
---
--- a/drivers/scsi/scsi_error.c 2010-09-13 07:07:38.000000000 +0800
+++ b/drivers/scsi/scsi_error.c 2010-11-01 20:56:36.000000000 +0800
@@ -1765,6 +1765,7 @@ int scsi_error_handler(void *data)
SCSI_LOG_ERROR_RECOVERY(1,
printk("Error handler scsi_eh_%d sleeping\n",
shost->host_no));
+ yield:
schedule();
set_current_state(TASK_INTERRUPTIBLE);
continue;
@@ -1785,7 +1786,8 @@ int scsi_error_handler(void *data)
printk(KERN_ERR "Error handler scsi_eh_%d "
"unable to autoresume\n",
shost->host_no));
- continue;
+ set_current_state(TASK_INTERRUPTIBLE);
+ goto yield;
}
if (shost->transportt->eh_strategy_handler)
--
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