Resguardo inicial

linux-7.2.3/arch/sh/kernel/ioport.c

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * arch/sh/kernel/ioport.c
+ *
+ * Copyright (C) 2000  Niibe Yutaka
+ * Copyright (C) 2005 - 2007 Paul Mundt
+ */
+#include <linux/module.h>
+#include <linux/io.h>
+#include <asm/io_trapped.h>
+
+unsigned long sh_io_port_base __read_mostly = -1;
+EXPORT_SYMBOL(sh_io_port_base);
+
+void __iomem *ioport_map(unsigned long port, unsigned int nr)
+{
+	void __iomem *ret;
+
+	ret = __ioport_map_trapped(port, nr);
+	if (ret)
+		return ret;
+
+	return (void __iomem *)(port + sh_io_port_base);
+}
+EXPORT_SYMBOL(ioport_map);