[Patch 03/12] GRU - fix automatic retry of gru instruction failures

[steiner]

From: Jack Steiner <steiner@xxxxxxx>

Fix bug in automatic retry of GRU instruction failures.
CBR substatus (message queue failure) was being checked
incorrectly.


Signed-off-by: Jack Steiner <steiner@xxxxxxx>

---
 drivers/misc/sgi-gru/grukservices.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Index: linux/drivers/misc/sgi-gru/grukservices.c
===================================================================
--- linux.orig/drivers/misc/sgi-gru/grukservices.c	2009-04-29 13:41:24.000000000 -0500
+++ linux/drivers/misc/sgi-gru/grukservices.c	2009-04-29 13:43:32.000000000 -0500
@@ -436,11 +436,10 @@ static int gru_retry_exception(void *cb)
 	int retry = EXCEPTION_RETRY_LIMIT;
 
 	while (1)  {
-		if (gru_get_cb_message_queue_substatus(cb))
-			break;
 		if (gru_wait_idle_or_exception(gen) == CBS_IDLE)
 			return CBS_IDLE;
-
+		if (gru_get_cb_message_queue_substatus(cb))
+			return CBS_EXCEPTION;
 		gru_get_cb_exception_detail(cb, &excdet);
 		if ((excdet.ecause & ~EXCEPTION_RETRY_BITS) ||
 				(excdet.cbrexecstatus & CBR_EXS_ABORT_OCC))

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