diff --git a/arch/arm/mach-stm32mp/psci.c b/arch/arm/mach-stm32mp/psci.c
index 19f1acf..155aa79 100644
--- a/arch/arm/mach-stm32mp/psci.c
+++ b/arch/arm/mach-stm32mp/psci.c
@@ -11,6 +11,7 @@
 #include <asm/io.h>
 #include <asm/psci.h>
 #include <asm/secure.h>
+#include <linux/bitops.h>
 
 #define BOOT_API_A7_CORE0_MAGIC_NUMBER	0xCA7FACE0
 #define BOOT_API_A7_CORE1_MAGIC_NUMBER	0xCA7FACE1