[PATCH v3 2/8] arm64: irqflags: Pass flags as readonly operand to restore instruction

[Julien Thierry]

Flags are only read by the instructions doing the irqflags restore
operation. Pass the operand as read only to the asm inline instead of
read-write.

Signed-off-by: Julien Thierry <julien.thie...@arm.com>
Cc: Catalin Marinas <catalin.mari...@arm.com>
Cc: Will Deacon <will.dea...@arm.com>
---
 arch/arm64/include/asm/irqflags.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/include/asm/irqflags.h 
b/arch/arm64/include/asm/irqflags.h
index 62996318..9c93152 100644
--- a/arch/arm64/include/asm/irqflags.h
+++ b/arch/arm64/include/asm/irqflags.h
@@ -119,8 +119,8 @@ static inline void arch_local_irq_restore(unsigned long 
flags)
                        __msr_s(SYS_ICC_PMR_EL1, "%0")
                        "dsb    sy",
                        ARM64_HAS_IRQ_PRIO_MASKING)
-               : "+r" (flags)
                :
+               : "r" (flags)
                : "memory");
 }

--
1.9.1