qcacmn: Add qdf API to find last set bit
Add qdf wrapper for Linux fls() to find last set bit.
Change-Id: I089fee397d619515c768521bda1f4d4c35526fe0
diff --git a/qdf/inc/qdf_util.h b/qdf/inc/qdf_util.h
index ec990c5..a89e48d 100644
--- a/qdf/inc/qdf_util.h
+++ b/qdf/inc/qdf_util.h
@@ -761,4 +761,17 @@
return __qdf_hex_str_to_binary(dst, src, count);
}
+/**
+ * qdf_fls() - find last set bit in a given 32 bit input
+ * @x: 32 bit mask
+ *
+ * Return: zero if the input is zero, otherwise returns the bit
+ * position of the last set bit, where the LSB is 1 and MSB is 32.
+ */
+static inline
+int qdf_fls(uint32_t x)
+{
+ return __qdf_fls(x);
+}
+
#endif /*_QDF_UTIL_H*/
diff --git a/qdf/linux/src/i_qdf_util.h b/qdf/linux/src/i_qdf_util.h
index 469320e..67469c3 100644
--- a/qdf/linux/src/i_qdf_util.h
+++ b/qdf/linux/src/i_qdf_util.h
@@ -472,4 +472,17 @@
return hex2bin(dst, src, count);
}
+/**
+ * __qdf_fls() - find last set bit in a given 32 bit input
+ * @x: 32 bit mask
+ *
+ * Return: zero if the input is zero, otherwise returns the bit
+ * position of the last set bit, where the LSB is 1 and MSB is 32.
+ */
+static inline
+int __qdf_fls(uint32_t x)
+{
+ return fls(x);
+}
+
#endif /*_I_QDF_UTIL_H*/