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From:   Jan Kiszka <jan.kiszka@web.de>
Subject: [PATCH] x86: Ensure asm/proto.h can be included stand-alone
To:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        x86 <x86@kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Message-ID: <b76b4be3-cf66-f6b2-9a6c-3e7ef54f9845@web.de>
Date:   Sun, 11 Apr 2021 10:12:16 +0200
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From: Jan Kiszka <jan.kiszka@siemens.com>

Avoids

../arch/x86/include/asm/proto.h:14:30: warning: =E2=80=98struct task_struc=
t=E2=80=99 declared inside parameter list will not be visible outside of t=
his definition or declaration
 long do_arch_prctl_64(struct task_struct *task, int option, unsigned long=
 arg2);
                              ^~~~~~~~~~~
../arch/x86/include/asm/proto.h:40:34: warning: =E2=80=98struct task_struc=
t=E2=80=99 declared inside parameter list will not be visible outside of t=
his definition or declaration
 long do_arch_prctl_common(struct task_struct *task, int option,
                                  ^~~~~~~~~~~

if linux/sched.h hasn't be included previously.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
=2D--
 arch/x86/include/asm/proto.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/include/asm/proto.h b/arch/x86/include/asm/proto.h
index b6a9d51d1d79..8c5d1910a848 100644
=2D-- a/arch/x86/include/asm/proto.h
+++ b/arch/x86/include/asm/proto.h
@@ -4,6 +4,8 @@

 #include <asm/ldt.h>

+struct task_struct;
+
 /* misc architecture specific prototypes */

 void syscall_init(void);
=2D-
2.26.2