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-rw-r--r--arch/arm/mach-spear/generic.h2
-rw-r--r--arch/arm/mach-spear/headsmp.S2
-rw-r--r--arch/arm/mach-spear/hotplug.c4
-rw-r--r--arch/arm/mach-spear/platsmp.c27
4 files changed, 22 insertions, 13 deletions
diff --git a/arch/arm/mach-spear/generic.h b/arch/arm/mach-spear/generic.h
index 909b97c0b237..25b4c5e66e39 100644
--- a/arch/arm/mach-spear/generic.h
+++ b/arch/arm/mach-spear/generic.h
@@ -20,6 +20,8 @@
#include <asm/mach/time.h>
+extern volatile int spear_pen_release;
+
extern void spear13xx_timer_init(void);
extern void spear3xx_timer_init(void);
extern struct pl022_ssp_controller pl022_plat_data;
diff --git a/arch/arm/mach-spear/headsmp.S b/arch/arm/mach-spear/headsmp.S
index c52192dc3d9f..6e250b6c0aa2 100644
--- a/arch/arm/mach-spear/headsmp.S
+++ b/arch/arm/mach-spear/headsmp.S
@@ -43,5 +43,5 @@ pen: ldr r7, [r6]
.align
1: .long .
- .long pen_release
+ .long spear_pen_release
ENDPROC(spear13xx_secondary_startup)
diff --git a/arch/arm/mach-spear/hotplug.c b/arch/arm/mach-spear/hotplug.c
index 12edd1cf8a12..0dd84f609627 100644
--- a/arch/arm/mach-spear/hotplug.c
+++ b/arch/arm/mach-spear/hotplug.c
@@ -16,6 +16,8 @@
#include <asm/cp15.h>
#include <asm/smp_plat.h>
+#include "generic.h"
+
static inline void cpu_enter_lowpower(void)
{
unsigned int v;
@@ -57,7 +59,7 @@ static inline void spear13xx_do_lowpower(unsigned int cpu, int *spurious)
for (;;) {
wfi();
- if (pen_release == cpu) {
+ if (spear_pen_release == cpu) {
/*
* OK, proper wakeup, we're done
*/
diff --git a/arch/arm/mach-spear/platsmp.c b/arch/arm/mach-spear/platsmp.c
index 39038a03836a..b1ff4bb86f6d 100644
--- a/arch/arm/mach-spear/platsmp.c
+++ b/arch/arm/mach-spear/platsmp.c
@@ -20,16 +20,21 @@
#include <mach/spear.h>
#include "generic.h"
+/* XXX spear_pen_release is cargo culted code - DO NOT COPY XXX */
+volatile int spear_pen_release = -1;
+
/*
- * Write pen_release in a way that is guaranteed to be visible to all
- * observers, irrespective of whether they're taking part in coherency
+ * XXX CARGO CULTED CODE - DO NOT COPY XXX
+ *
+ * Write spear_pen_release in a way that is guaranteed to be visible to
+ * all observers, irrespective of whether they're taking part in coherency
* or not. This is necessary for the hotplug code to work reliably.
*/
-static void write_pen_release(int val)
+static void spear_write_pen_release(int val)
{
- pen_release = val;
+ spear_pen_release = val;
smp_wmb();
- sync_cache_w(&pen_release);
+ sync_cache_w(&spear_pen_release);
}
static DEFINE_SPINLOCK(boot_lock);
@@ -42,7 +47,7 @@ static void spear13xx_secondary_init(unsigned int cpu)
* let the primary processor know we're out of the
* pen, then head off into the C entry point
*/
- write_pen_release(-1);
+ spear_write_pen_release(-1);
/*
* Synchronise with the boot thread.
@@ -64,17 +69,17 @@ static int spear13xx_boot_secondary(unsigned int cpu, struct task_struct *idle)
/*
* The secondary processor is waiting to be released from
* the holding pen - release it, then wait for it to flag
- * that it has been released by resetting pen_release.
+ * that it has been released by resetting spear_pen_release.
*
- * Note that "pen_release" is the hardware CPU ID, whereas
+ * Note that "spear_pen_release" is the hardware CPU ID, whereas
* "cpu" is Linux's internal ID.
*/
- write_pen_release(cpu);
+ spear_write_pen_release(cpu);
timeout = jiffies + (1 * HZ);
while (time_before(jiffies, timeout)) {
smp_rmb();
- if (pen_release == -1)
+ if (spear_pen_release == -1)
break;
udelay(10);
@@ -86,7 +91,7 @@ static int spear13xx_boot_secondary(unsigned int cpu, struct task_struct *idle)
*/
spin_unlock(&boot_lock);
- return pen_release != -1 ? -ENOSYS : 0;
+ return spear_pen_release != -1 ? -ENOSYS : 0;
}
/*

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