[PATCH] x86: Ensure asm/proto.h can be included stand-alone

[Jan Kiszka]

From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>

Avoids

../arch/x86/include/asm/proto.h:14:30: warning: ‘struct task_struct’ declared inside parameter list will not be visible outside of this 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: ‘struct task_struct’ declared inside parameter list will not be visible outside of this 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@xxxxxxxxxxx>
---
 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
--- 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);
--
2.26.2