[PATCH] cell: enable pause(0) in cpu_idle

This patch enables support for pause(0) power management state
for the Cell Broadband Processor, which is import for power efficient
operation. The pervasive infrastructure will in the future enable
us to introduce more functionality specific to the Cell's
pervasive unit.

From: Maximino Aguilar <maguilar@us.ibm.com>
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 6c793463d511..7509aa6474f2 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -230,8 +230,10 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
 void system_reset_exception(struct pt_regs *regs)
 {
         /* See if any machine dependent calls */
-        if (ppc_md.system_reset_exception)
-                ppc_md.system_reset_exception(regs);
+        if (ppc_md.system_reset_exception) {
+                if (ppc_md.system_reset_exception(regs))
+                        return;
+        }
 
         die("System Reset", regs, SIGABRT);