Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/linkmode.h b/include/linux/linkmode.h
new file mode 100644
index 0000000..a99c588
--- /dev/null
+++ b/include/linux/linkmode.h
@@ -0,0 +1,85 @@
+#ifndef __LINKMODE_H
+#define __LINKMODE_H
+
+#include <linux/bitmap.h>
+#include <linux/ethtool.h>
+#include <uapi/linux/ethtool.h>
+
+static inline void linkmode_zero(unsigned long *dst)
+{
+	bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+static inline void linkmode_copy(unsigned long *dst, const unsigned long *src)
+{
+	bitmap_copy(dst, src, __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+static inline void linkmode_and(unsigned long *dst, const unsigned long *a,
+				const unsigned long *b)
+{
+	bitmap_and(dst, a, b, __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+static inline void linkmode_or(unsigned long *dst, const unsigned long *a,
+				const unsigned long *b)
+{
+	bitmap_or(dst, a, b, __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+static inline bool linkmode_empty(const unsigned long *src)
+{
+	return bitmap_empty(src, __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+static inline int linkmode_andnot(unsigned long *dst, const unsigned long *src1,
+				  const unsigned long *src2)
+{
+	return bitmap_andnot(dst, src1, src2,  __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+static inline void linkmode_set_bit(int nr, volatile unsigned long *addr)
+{
+	__set_bit(nr, addr);
+}
+
+static inline void linkmode_set_bit_array(const int *array, int array_size,
+					  unsigned long *addr)
+{
+	int i;
+
+	for (i = 0; i < array_size; i++)
+		linkmode_set_bit(array[i], addr);
+}
+
+static inline void linkmode_clear_bit(int nr, volatile unsigned long *addr)
+{
+	__clear_bit(nr, addr);
+}
+
+static inline void linkmode_mod_bit(int nr, volatile unsigned long *addr,
+				    int set)
+{
+	if (set)
+		linkmode_set_bit(nr, addr);
+	else
+		linkmode_clear_bit(nr, addr);
+}
+
+static inline void linkmode_change_bit(int nr, volatile unsigned long *addr)
+{
+	__change_bit(nr, addr);
+}
+
+static inline int linkmode_test_bit(int nr, volatile unsigned long *addr)
+{
+	return test_bit(nr, addr);
+}
+
+static inline int linkmode_equal(const unsigned long *src1,
+				 const unsigned long *src2)
+{
+	return bitmap_equal(src1, src2, __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+#endif /* __LINKMODE_H */