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RealView: Use flush_cache_all() rather than MCR in cpu_enter_lowpower() 

The MCR for flushing the whole D cache is undefined on ARMv7 CPUs.

Signed-off-by: Harry Fearnhamm <Harry.Fearnhamm@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
hifive-unleashed-5.1
Harry Fearnhamm 2008-12-01 14:54:56 +00:00 committed by Catalin Marinas
parent e7c70825a7
commit 8aa2da872a
1 changed files with 4 additions and 1 deletions
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5
arch/arm/mach-realview/hotplug.c
View File

@ -13,6 +13,8 @@
#include <linux/smp.h>
#include <linux/completion.h>
#include <asm/cacheflush.h>
extern volatile int pen_release;
static DECLARE_COMPLETION(cpu_killed);
@ -21,7 +23,8 @@ static inline void cpu_enter_lowpower(void)
{
unsigned int v;
asm volatile( "mcr p15, 0, %1, c7, c14, 0\n"
flush_cache_all();
asm volatile(
" mcr p15, 0, %1, c7, c5, 0\n"
" mcr p15, 0, %1, c7, c10, 4\n"
/*