From: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Date: Fri, 2 Nov 2012 12:44:34 +0000 (+0530)
Subject: ARM: mach-ux500: use SGI0 to wake up the other core
X-Git-Tag: firefly_0821_release~3680^2~1068^2~7^2~16
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=902ef5d77aeaff43bce8d3ce55c442a12eb71819;p=firefly-linux-kernel-4.4.55.git

ARM: mach-ux500: use SGI0 to wake up the other core

The commit 7d28e3eaa1a8e951251b942e7220f97114bd73b9
("ARM: ux500: wake secondary cpu via resched") makes use
of schedule IPI to wake up the secondary core which seems
incorrect. Rather use SGI0.

Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Olof Johansson <olof@lixom.net>
---

diff --git a/arch/arm/mach-ux500/platsmp.c b/arch/arm/mach-ux500/platsmp.c
index 3db7782f3afb..79531f1dffbc 100644
--- a/arch/arm/mach-ux500/platsmp.c
+++ b/arch/arm/mach-ux500/platsmp.c
@@ -91,7 +91,7 @@ static int __cpuinit ux500_boot_secondary(unsigned int cpu, struct task_struct *
 	 */
 	write_pen_release(cpu_logical_map(cpu));
 
-	smp_send_reschedule(cpu);
+	gic_raise_softirq(cpumask_of(cpu), 0);
 
 	timeout = jiffies + (1 * HZ);
 	while (time_before(jiffies, timeout)) {