1 files changed, 8 insertions, 0 deletions
diff --git a/kerncompat.h b/kerncompat.h
index 7c627ba3..0f207b7f 100644
--- a/kerncompat.h
+++ b/kerncompat.h
@@ -310,6 +310,14 @@ static inline long IS_ERR(const void *ptr)
 #define __bitwise
 #endif
 
+/* Alignment check */
+#define IS_ALIGNED(x, a)                (((x) & ((typeof(x))(a) - 1)) == 0)
+
+static inline int is_power_of_2(unsigned long n)
+{
+	return (n != 0 && ((n & (n - 1)) == 0));
+}
+
 typedef u16 __bitwise __le16;
 typedef u16 __bitwise __be16;
 typedef u32 __bitwise __le32;