ARCv2: intc: Allow interruption by lowest priority interrupt

[cascardo/linux.git] / arch / arc / include / asm / irqflags-arcv2.h

diff --git a/arch/arc/include/asm/irqflags-arcv2.h b/arch/arc/include/asm/irqflags-arcv2.h
index 258b0e5..1fc18ee 100644 (file)
--- a/arch/arc/include/asm/irqflags-arcv2.h
+++ b/arch/arc/include/asm/irqflags-arcv2.h
@@ -30,8 +30,11 @@
 /* Was Intr taken in User Mode */
 #define AUX_IRQ_ACT_BIT_U      31
 
-/* 0 is highest level, but taken by FIRQs, if present in design */
-#define ARCV2_IRQ_DEF_PRIO             0
+/*
+ * User space should be interruptable even by lowest prio interrupt
+ * Safe even if actual interrupt priorities is fewer or even one
+ */
+#define ARCV2_IRQ_DEF_PRIO     15
 
 /* seed value for status register */
 #define ISA_INIT_STATUS_BITS   (STATUS_IE_MASK | STATUS_AD_MASK | \