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-rw-r--r--drivers/net/cxgbe/cxgbe_compat.h11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/net/cxgbe/cxgbe_compat.h b/drivers/net/cxgbe/cxgbe_compat.h
index 1551cbf5..03bba9fe 100644
--- a/drivers/net/cxgbe/cxgbe_compat.h
+++ b/drivers/net/cxgbe/cxgbe_compat.h
@@ -1,7 +1,7 @@
/*-
* BSD LICENSE
*
- * Copyright(c) 2014-2015 Chelsio Communications.
+ * Copyright(c) 2014-2017 Chelsio Communications.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -226,6 +226,15 @@ static inline int cxgbe_fls(int x)
return x ? sizeof(x) * 8 - __builtin_clz(x) : 0;
}
+/**
+ * cxgbe_ffs - find first bit set
+ * @x: the word to search
+ */
+static inline int cxgbe_ffs(int x)
+{
+ return x ? __builtin_ffs(x) : 0;
+}
+
static inline unsigned long ilog2(unsigned long n)
{
unsigned int e = 0;