D54497.diff
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	diff --git a/sys/compat/linuxkpi/common/include/linux/kfifo.h b/sys/compat/linuxkpi/common/include/linux/kfifo.h
	--- a/sys/compat/linuxkpi/common/include/linux/kfifo.h
	+++ b/sys/compat/linuxkpi/common/include/linux/kfifo.h
	@@ -33,8 +33,26 @@
	#include <linux/slab.h>
	#include <linux/gfp.h>

	-#define INIT_KFIFO(x) 0
	-#define DECLARE_KFIFO(x, y, z)
	+/*
	+ * INIT_KFIFO() is used to initialize the structure declared with
	+ * DECLARE_KFIFO(). It doesn't work with DECLARE_KFIFO_PTR().
	+ */
	+#define INIT_KFIFO(_kf) \
	+ ({ \
	+ (_kf).total = nitems((_kf).head); \
	+ (_kf).count = 0; \
	+ (_kf).first = 0; \
	+ (_kf).last = 0; \
	+ })
	+
	+#define DECLARE_KFIFO(_name, _type, _size) \
	+ struct kfifo_ ## _name { \
	+ size_t total; \
	+ size_t count; \
	+ size_t first; \
	+ size_t last; \
	+ _type head[_size]; \
	+ } _name

	#define DECLARE_KFIFO_PTR(_name, _type) \
	struct kfifo_ ## _name { \