[tip:x86/asm] um/x86: Fix build after x86 syscall changes

[tip-bot for Andy Lutomirski <tipbot@zytor.com>]

Commit-ID:  612bece654ff6cd43160e201985be826e96b8bcb
Gitweb:     http://git.kernel.org/tip/612bece654ff6cd43160e201985be826e96b8bcb
Author:     Andy Lutomirski <luto@kernel.org>
AuthorDate: Mon, 12 Oct 2015 17:32:14 -0700
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 14 Oct 2015 16:56:28 +0200

um/x86: Fix build after x86 syscall changes

I didn't realize that um didn't include x86's asm/syscall.h.
Re-add a missing typedef.

Reported-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 034042cc1e28 ("x86/entry/syscalls: Move syscall table declarations into asm/syscalls.h")
Link: http://lkml.kernel.org/r/8d15b9a88f4fd49e3342757e0a34624ee5ce9220.1444696194.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/um/asm/syscall.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/um/asm/syscall.h b/arch/x86/um/asm/syscall.h
index 9fe77b7..81d6562 100644
--- a/arch/x86/um/asm/syscall.h
+++ b/arch/x86/um/asm/syscall.h
@@ -3,6 +3,10 @@
 
 #include <uapi/linux/audit.h>
 
+typedef asmlinkage long (*sys_call_ptr_t)(unsigned long, unsigned long,
+					  unsigned long, unsigned long,
+					  unsigned long, unsigned long);
+
 static inline int syscall_get_arch(void)
 {
 #ifdef CONFIG_X86_32