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powerpc: cleanup hw_irq.h

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SET_MSR_EE() is just use in this file and doesn't provide
any added value compared to mtmsr(). Drop it.

Add a wrtee() inline function to use wrtee/wrteei insn.

Replace #ifdefs by IS_ENABLED()

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/a28a20514d5f6df9629c1a117b667e48c4272736.1567068137.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy
2019-08-29 08:45:13 +00:00
committed by Michael Ellerman
parent 44448640dd
commit b020aa9d1e
2 changed files with 34 additions and 31 deletions
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8
arch/powerpc/include/asm/reg.h
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@@ -1368,6 +1368,14 @@ static inline void mtmsr_isync(unsigned long val)
#define wrtspr(rn) asm volatile("mtspr " __stringify(rn) ",0" : \
: : "memory")
static inline void wrtee(unsigned long val)
{
if (__builtin_constant_p(val))
asm volatile("wrteei %0" : : "i" ((val & MSR_EE) ? 1 : 0) : "memory");
else
asm volatile("wrtee %0" : : "r" (val) : "memory");
}
extern unsigned long msr_check_and_set(unsigned long bits);
extern bool strict_msr_control;
extern void __msr_check_and_clear(unsigned long bits);