diff mbox series

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

Message ID 1559813517-41540-3-git-send-email-julien.thierry@arm.com (mailing list archive)
State New, archived
Headers show
Series arm64: IRQ priority masking and Pseudo-NMI fixes | expand

Commit Message

Julien Thierry June 6, 2019, 9:31 a.m. UTC 
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.thierry@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
---
 arch/arm64/include/asm/irqflags.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--
1.9.1
diff mbox series

Patch

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");
 }