arch: remove m32r port

The Mitsubishi/Renesas m32r architecture has been around for many years,
but the Linux port has been obsolete for a very long time as well, with
the last significant updates done for linux-2.6.14.

While some m32r microcontrollers are still being marketed by Renesas,
those are apparently no longer possible to support, mainly due to the
lack of an external memory interface.

Hirokazu Takata was the maintainer until the architecture got marked
Orphaned in 2014.

Link: http://www.linux-m32r.org/
Link: https://www.renesas.com/en-eu/products/microcontrollers-microprocessors/m32r.html
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 44 deletions

diff --git a/arch/m32r/kernel/irq.c b/arch/m32r/kernel/irq.c
deleted file mode 100644
index 83b5032f176c..000000000000
--- a/arch/m32r/kernel/irq.c
+++ /dev/null
@@ -1,44 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/m32r/kernel/irq.c
- *
- *  Copyright (c) 2003, 2004  Hitoshi Yamamoto
- *  Copyright (c) 2004  Hirokazu Takata <takata at linux-m32r.org>
- */
-
-/*
- *	linux/arch/i386/kernel/irq.c
- *
- *	Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
- *
- * This file contains the lowest level m32r-specific interrupt
- * entry and irq statistics code. All the remaining irq logic is
- * done by the generic kernel/irq/ code and in the
- * m32r-specific irq controller code.
- */
-
-#include <linux/kernel_stat.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/uaccess.h>
-
-/*
- * do_IRQ handles all normal device IRQs (the special
- * SMP cross-CPU interrupts have their own specific
- * handlers).
- */
-asmlinkage unsigned int do_IRQ(int irq, struct pt_regs *regs)
-{
-	struct pt_regs *old_regs;
-	old_regs = set_irq_regs(regs);
-	irq_enter();
-
-#ifdef CONFIG_DEBUG_STACKOVERFLOW
-	/* FIXME M32R */
-#endif
-	generic_handle_irq(irq);
-	irq_exit();
-	set_irq_regs(old_regs);
-
-	return 1;
-}