--- /dev/null
+#ifndef _LINUX_ERR_H
+#define _LINUX_ERR_H
+
+/* XXX U-BOOT XXX */
+#if 0
+#include <linux/compiler.h>
+#else
+#include <linux/compat.h>
+#endif
+
+#include <asm/errno.h>
+
+
+/*
+ * Kernel pointers have redundant information, so we can use a
+ * scheme where we can return either an error code or a dentry
+ * pointer with the same return value.
+ *
+ * This should be a per-architecture thing, to allow different
+ * error and pointer decisions.
+ */
+#define MAX_ERRNO 4095
+
+#ifndef __ASSEMBLY__
+
+#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
+
+static inline void *ERR_PTR(long error)
+{
+ return (void *) error;
+}
+
+static inline long PTR_ERR(const void *ptr)
+{
+ return (long) ptr;
+}
+
+static inline long IS_ERR(const void *ptr)
+{
+ return IS_ERR_VALUE((unsigned long)ptr);
+}
+
+#endif
+
+#endif /* _LINUX_ERR_H */