From: Daniel Hellstrom <daniel@gaisler.com>
Date: Mon, 25 Apr 2011 21:48:17 +0000 (+0000)
Subject: sparc32,leon: SMP power down implementation
X-Git-Tag: firefly_0821_release~7613^2~1347^2~10
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2645e7219e88d1e2ab8b2939537bce36e6db9e8c;p=firefly-linux-kernel-4.4.55.git

sparc32,leon: SMP power down implementation

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index 17529298c50a..c8cc461ff75f 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -128,8 +128,16 @@ void cpu_idle(void)
         set_thread_flag(TIF_POLLING_NRFLAG);
 	/* endless idle loop with no priority at all */
 	while(1) {
-		while (!need_resched())
-			cpu_relax();
+#ifdef CONFIG_SPARC_LEON
+		if (pm_idle) {
+			while (!need_resched())
+				(*pm_idle)();
+		} else
+#endif
+		{
+			while (!need_resched())
+				cpu_relax();
+		}
 		preempt_enable_no_resched();
 		schedule();
 		preempt_disable();