gru: fix automatic retry of gru instruction failures
Fix bug in automatic retry of GRU instruction failures. CBR substatus
(message queue failure) was being checked incorrectly.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/misc/sgi-gru/grukservices.c b/drivers/misc/sgi-gru/grukservices.c
index 5078f57..eedbf9c 100644
--- a/drivers/misc/sgi-gru/grukservices.c
+++ b/drivers/misc/sgi-gru/grukservices.c
@@ -436,11 +436,10 @@
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))