parisc: Check if IRQs are disabled when calling arch_local_irq_restore()

A trivial check to check if IRQs are on although they should be off.

Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/arch/parisc/include/asm/irqflags.h b/arch/parisc/include/asm/irqflags.h
index 38a19c0..00fd877 100644 (file)
--- a/arch/parisc/include/asm/irqflags.h
+++ b/arch/parisc/include/asm/irqflags.h
@@ -31,6 +31,11 @@ static inline unsigned long arch_local_irq_save(void)
 
 static inline void arch_local_irq_restore(unsigned long flags)
 {
+       /* warn if IRQs are on although they should be off */
+       if (IS_ENABLED(CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK))
+               if (arch_local_save_flags() & PSW_I)
+                       asm volatile("break 6,6\n"); /*  SPINLOCK_BREAK_INSN */
+
        asm volatile("mtsm %0" : : "r" (flags) : "memory");
 }