[patch] scsi_lib.c error handler patch

[Peter Yao <peter@exavio.com.cn>]

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i found a bug in redhat 7.3's kernel source, which cause some failed 
commands cannot be passed to the scsi error handler thread. I searched 
this list hastily and did not find a fix. i don't know whether it is in 
the latest kernel source, just a remind. :-)

Peter Yao

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--- drivers/scsi/scsi_lib.c	Thu Apr 18 10:50:34 2002
+++ /tmp/scsi_lib.c	Fri Jun 20 17:34:10 2003
@@ -423,6 +423,11 @@
 		 * the front of the queue, and goose the queue again.
 		 */
 		scsi_queue_next_request(q, SCpnt);
+		/* Don't forget to wake up error handler */
+                if (SCpnt->host->in_recovery && !SCpnt->host->eh_active &&
+                        atomic_read(&SCpnt->host->host_busy) == SCpnt->host->host_failed) {
+                        up(SCpnt->host->eh_wait);
+                }
 		return SCpnt;
 	}
 	/*