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ARM: 8573/1: domain: move {set,get}_domain under config guard

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Recursive undefined instrcution falut is seen with R-class taking an
exception. The reson for that is __show_regs() tries to get domain
information, but domains is not available on !MMU cores, like R/M
class.

Fix it by puting {set,get}_domain functions under CONFIG_CPU_CP15_MMU
guard and providing stubs for the case where domains is not supported.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Vladimir Murzin
2016-05-04 10:39:02 +01:00
committed by Russell King
parent 5b526bd925
commit ec953b70f3
1 changed files with 11 additions and 0 deletions
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11
arch/arm/include/asm/domain.h
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@@ -84,6 +84,7 @@
#ifndef __ASSEMBLY__
#ifdef CONFIG_CPU_CP15_MMU
static inline unsigned int get_domain(void)
{
unsigned int domain;
@@ -103,6 +104,16 @@ static inline void set_domain(unsigned val)
: : "r" (val) : "memory");
isb();
}
#else
static inline unsigned int get_domain(void)
{
return 0;
}
static inline void set_domain(unsigned val)
{
}
#endif
#ifdef CONFIG_CPU_USE_DOMAINS
#define modify_domain(dom,type) \