[S390] Remove BUG() statement

[Martin Schwidefsky <schwidefsky@de.ibm.com>]

From: Michael Holzheu <holzheu@de.ibm.com>

[S390] Remove BUG() statement

To avoid ugly warings for older gccs, we replace
BUG() with "return NULL", which is just as well.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

 arch/s390/kernel/ipl.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -urpN linux-2.6/arch/s390/kernel/ipl.c linux-2.6-patched/arch/s390/kernel/ipl.c
--- linux-2.6/arch/s390/kernel/ipl.c	2007-02-21 10:47:32.000000000 +0100
+++ linux-2.6-patched/arch/s390/kernel/ipl.c	2007-02-21 10:47:32.000000000 +0100
@@ -91,7 +91,7 @@ static char *shutdown_action_str(enum sh
 	case SHUTDOWN_STOP:
 		return SHUTDOWN_STOP_STR;
 	default:
-		BUG();
+		return NULL;
 	}
 }
 
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