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m68k: kernel: Add and use "signal.h" 

When building with W=1:

    arch/m68k/kernel/signal.c:756:18: warning: no previous prototype for ‘do_sigreturn’ [-Wmissing-prototypes]
      756 | asmlinkage void *do_sigreturn(struct pt_regs *regs, struct switch_stack *sw)
	  |                  ^~~~~~~~~~~~
    arch/m68k/kernel/signal.c:783:18: warning: no previous prototype for ‘do_rt_sigreturn’ [-Wmissing-prototypes]
      783 | asmlinkage void *do_rt_sigreturn(struct pt_regs *regs, struct switch_stack *sw)
	  |                  ^~~~~~~~~~~~~~~
    arch/m68k/kernel/signal.c:1112:17: warning: no previous prototype for ‘do_notify_resume’ [-Wmissing-prototypes]
     1112 | asmlinkage void do_notify_resume(struct pt_regs *regs)
	  |                 ^~~~~~~~~~~~~~~~

Fix this by introducing a new header file "signal.h" for holding the
prototypes of functions implemented in arch/m68k/kernel/signal.c.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/25cecda80698829cec18721a9d0f058cc69df0cc.1694613528.git.geert@linux-m68k.org
This commit is contained in:
Geert Uytterhoeven 2023-09-13 16:07:58 +02:00
parent 7afc185016
commit dbe93977e5
2 changed files with 9 additions and 0 deletions
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2
arch/m68k/kernel/signal.c
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@ -51,6 +51,8 @@
#include <asm/ucontext.h>
#include <asm/cacheflush.h>
#include "signal.h"
#ifdef CONFIG_MMU
/*

7
arch/m68k/kernel/signal.h Normal file
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@ -0,0 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <linux/linkage.h>
asmlinkage void do_notify_resume(struct pt_regs *regs);
asmlinkage void *do_sigreturn(struct pt_regs *regs, struct switch_stack *sw);
asmlinkage void *do_rt_sigreturn(struct pt_regs *regs, struct switch_stack *sw);