[PATCH 6/7] m68knommu: 68000: fix warnings in 68000 interrupt handling

[Greg Ungerer <gerg@linux-m68k.org>]

When building with W=1:

      CC      arch/m68k/68000/ints.o
    arch/m68k/68000/ints.c:77:6: warning: no previous prototype for ‘process_int’ [-Wmissing-prototypes]
     void process_int(int vec, struct pt_regs *fp)
          ^~~~~~~~~~~
    arch/m68k/68000/ints.c:153:13: warning: no previous prototype for ‘trap_init’ [-Wmissing-prototypes]
     void __init trap_init(void)
                 ^~~~~~~~~

Include linux/cpu.h to get the prototype for trap_init().
Create a local ints.h for prototype of process_int(). Also mark
process_int() as asmlinkage, since it is called from the first level
interrupt assembly handler.

Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
---
 arch/m68k/68000/ints.c | 5 ++++-
 arch/m68k/68000/ints.h | 7 +++++++
 2 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 arch/m68k/68000/ints.h

diff --git a/arch/m68k/68000/ints.c b/arch/m68k/68000/ints.c
index f9a5ec781408..2ba9926e91ae 100644
--- a/arch/m68k/68000/ints.c
+++ b/arch/m68k/68000/ints.c
@@ -14,6 +14,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/cpu.h>
 #include <asm/traps.h>
 #include <asm/io.h>
 #include <asm/machdep.h>
@@ -26,6 +27,8 @@
 #include <asm/MC68328.h>
 #endif
 
+#include "ints.h"
+
 /* assembler routines */
 asmlinkage void system_call(void);
 asmlinkage void buserr(void);
@@ -74,7 +77,7 @@ asmlinkage irqreturn_t inthandler7(void);
  * into one vector and look in the blasted mask register...
  * This code is designed to be fast, almost constant time, not clean!
  */
-void process_int(int vec, struct pt_regs *fp)
+asmlinkage void process_int(int vec, struct pt_regs *fp)
 {
 	int irq;
 	int mask;
diff --git a/arch/m68k/68000/ints.h b/arch/m68k/68000/ints.h
new file mode 100644
index 000000000000..d9cfd0eb9ffe
--- /dev/null
+++ b/arch/m68k/68000/ints.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <linux/linkage.h>
+
+struct pt_regs;
+
+asmlinkage void process_int(int vec, struct pt_regs *fp);
-- 
2.25.1