[PATCH v1 08/13] powerpc/32: add helper to write into segment registers

[Christophe Leroy]

This patch add an helper which wraps 'mtsrin' instruction
to write into segment registers.

Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
---
 arch/powerpc/include/asm/reg.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index de52c3166ba4..c9c382e57017 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -1423,6 +1423,11 @@ static inline void msr_check_and_clear(unsigned long 
bits)
 #define mfsrin(v)      ({unsigned int rval; \
                        asm volatile("mfsrin %0,%1" : "=r" (rval) : "r" (v)); \
                                        rval;})
+
+static inline void mtsrin(u32 val, u32 idx)
+{
+       asm volatile("mtsrin %0, %1" : : "r" (val), "r" (idx));
+}
 #endif
 
 #define proc_trap()    asm volatile("trap")
-- 
2.13.3