x86/tsc: Allow TSC calibration without PIT

[mirror_ubuntu-bionic-kernel.git] / arch / x86 / include / asm / i8259.h

diff --git a/arch/x86/include/asm/i8259.h b/arch/x86/include/asm/i8259.h
index c8376b40e8829d3c8dafc1ea05501558774d7033..5cdcdbd4d892029f7cbd90ab30dfe0832e5780f4 100644 (file)
--- a/arch/x86/include/asm/i8259.h
+++ b/arch/x86/include/asm/i8259.h
@@ -69,6 +69,11 @@ struct legacy_pic {
 extern struct legacy_pic *legacy_pic;
 extern struct legacy_pic null_legacy_pic;
 
+static inline bool has_legacy_pic(void)
+{
+       return legacy_pic != &null_legacy_pic;
+}
+
 static inline int nr_legacy_irqs(void)
 {
        return legacy_pic->nr_legacy_irqs;