[PATCH 1/3] powerpc: Add __hard_irqs_disabled()

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

Add __hard_irqs_disabled() similar to arch_irqs_disabled to check whether irqs
are hard disabled.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/hw_irq.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h
index eba60416536e..541bd42f902f 100644
--- a/arch/powerpc/include/asm/hw_irq.h
+++ b/arch/powerpc/include/asm/hw_irq.h
@@ -88,6 +88,12 @@ static inline bool arch_irqs_disabled(void)
 	return arch_irqs_disabled_flags(arch_local_save_flags());
 }
 
+static inline bool __hard_irqs_disabled(void)
+{
+	unsigned long flags = mfmsr();
+	return (flags & MSR_EE) == 0;
+}
+
 #ifdef CONFIG_PPC_BOOK3E
 #define __hard_irq_enable()	asm volatile("wrteei 1" : : : "memory")
 #define __hard_irq_disable()	asm volatile("wrteei 0" : : : "memory")
@@ -197,6 +203,7 @@ static inline bool arch_irqs_disabled(void)
 }
 
 #define hard_irq_disable()		arch_local_irq_disable()
+#define __hard_irqs_disabled()		arch_irqs_disabled()
 
 static inline bool arch_irq_disabled_regs(struct pt_regs *regs)
 {
-- 
2.7.4