Re: [PATCH 6/6] omap: Fix SMP on UP interrupt handling for multi-omap

[Tony Lindgren <tony@atomide.com>]

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* Tony Lindgren <tony@atomide.com> [100902 09:16]:
> From c04a57fc3b41d886f56ccdc27cf9758de0c95202 Mon Sep 17 00:00:00 2001
> From: Tony Lindgren <tony@atomide.com>
> Date: Tue, 17 Aug 2010 13:33:23 +0300
> Subject: [PATCH 6/6] omap: Fix SMP on UP interrupt handling for multi-omap
> 
> Fix SMP on UP interrupt handling for multi-omap

Here's this one updated to use !smp_cpu() instead of smp_on_up().
Looks like the description and subject needed some refreshing too.

Tony

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>From e791c682fe2e3989e76f0bce7e0c9d97e65c2137 Mon Sep 17 00:00:00 2001
From: Tony Lindgren <tony@atomide.com>
Date: Tue, 17 Aug 2010 13:33:23 +0300
Subject: [PATCH] omap: Fix SMP on UP initialization for multi-omap

Fix SMP on UP initialization for multi-omap.

Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c
index 9e9f70e..3695232 100644
--- a/arch/arm/mach-omap2/omap-smp.c
+++ b/arch/arm/mach-omap2/omap-smp.c
@@ -22,6 +22,7 @@
 
 #include <asm/cacheflush.h>
 #include <asm/localtimer.h>
+#include <asm/smp_plat.h>
 #include <asm/smp_scu.h>
 #include <mach/hardware.h>
 #include <mach/omap4-common.h>
@@ -114,11 +115,15 @@ void __init smp_init_cpus(void)
 {
 	unsigned int i, ncores;
 
-	/* Never released */
-	scu_base = ioremap(OMAP44XX_SCU_BASE, SZ_256);
-	BUG_ON(!scu_base);
+	if (!smp_cpu()) {
+		ncores = 1;
+	} else {
+		/* Never released */
+		scu_base = ioremap(OMAP44XX_SCU_BASE, SZ_256);
+		BUG_ON(!scu_base);
 
-	ncores = get_core_count();
+		ncores = get_core_count();
+	}
 
 	for (i = 0; i < ncores; i++)
 		set_cpu_possible(i, true);
diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach-omap2/timer-gp.c
index 74fbed8..a21b4a4 100644
--- a/arch/arm/mach-omap2/timer-gp.c
+++ b/arch/arm/mach-omap2/timer-gp.c
@@ -37,6 +37,7 @@
 #include <linux/clockchips.h>
 
 #include <asm/mach/time.h>
+#include <asm/smp_plat.h>
 #include <plat/dmtimer.h>
 #include <asm/localtimer.h>
 
@@ -228,8 +229,10 @@ static void __init omap2_gp_clocksource_init(void)
 static void __init omap2_gp_timer_init(void)
 {
 #ifdef CONFIG_LOCAL_TIMERS
-	twd_base = ioremap(OMAP44XX_LOCAL_TWD_BASE, SZ_256);
-	BUG_ON(!twd_base);
+	if (!smp_cpu()) {
+		twd_base = ioremap(OMAP44XX_LOCAL_TWD_BASE, SZ_256);
+		BUG_ON(!twd_base);
+	}
 #endif
 	omap_dm_timer_init();