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Commit bca7a5a0 authored by Russell King's avatar Russell King
Browse files

ARM: cpu hotplug: remove majority of cache flushing from platforms 



Remove the majority of cache flushing calls from the individual platform
files.  This is now handled by the core code.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 51acdfd1

arch/arm/mach-exynos/hotplug.c

+0 −1
Original line number Diff line number Diff line
@@ -28,7 +28,6 @@ static inline void cpu_enter_lowpower_a9(void) 
{

	unsigned int v;



	flush_cache_all();

	asm volatile(

	"	mcr	p15, 0, %1, c7, c5, 0\n"

	"	mcr	p15, 0, %1, c7, c10, 4\n"

arch/arm/mach-highbank/hotplug.c

+0 −4
Original line number Diff line number Diff line
@@ -15,8 +15,6 @@ 
 */

#include <linux/kernel.h>



#include <asm/cacheflush.h>



#include "core.h"

#include "sysregs.h"
@@ -28,8 +26,6 @@ extern void secondary_startup(void); 
 */

void __ref highbank_cpu_die(unsigned int cpu)

{

	flush_cache_all();



	highbank_set_cpu_jump(cpu, phys_to_virt(0));

	highbank_set_core_pwr();

arch/arm/mach-imx/hotplug.c

+0 −2
Original line number Diff line number Diff line
@@ -11,7 +11,6 @@ 
 */



#include <linux/errno.h>

#include <asm/cacheflush.h>

#include <asm/cp15.h>



#include "common.h"
@@ -20,7 +19,6 @@ static inline void cpu_enter_lowpower(void) 
{

	unsigned int v;



	flush_cache_all();

	asm volatile(

		"mcr	p15, 0, %1, c7, c5, 0\n"

	"	mcr	p15, 0, %1, c7, c10, 4\n"

arch/arm/mach-msm/hotplug.c

+0 −4
Original line number Diff line number Diff line
@@ -10,16 +10,12 @@ 
#include <linux/errno.h>

#include <linux/smp.h>



#include <asm/cacheflush.h>

#include <asm/smp_plat.h>



#include "common.h"



static inline void cpu_enter_lowpower(void)

{

	/* Just flush the cache. Changing the coherency is not yet

	 * available on msm. */

	flush_cache_all();

}



static inline void cpu_leave_lowpower(void)

arch/arm/mach-omap2/omap-hotplug.c

+0 −3
Original line number Diff line number Diff line
@@ -35,9 +35,6 @@ void __ref omap4_cpu_die(unsigned int cpu) 
	unsigned int boot_cpu = 0;

	void __iomem *base = omap_get_wakeupgen_base();



	flush_cache_all();

	dsb();



	/*

	 * we're ready for shutdown now, so do it

	 */