[tip: x86/cleanups] x86/audit: Fix a -Wmissing-prototypes warning for ia32_classify_syscall()

[tip-bot2 for Benjamin Thiel]

The following commit has been merged into the x86/cleanups branch of tip:

Commit-ID:     0e5e3d4461a22d739fb2284a6e313fb6cecf2871
Gitweb:        https://git.kernel.org/tip/0e5e3d4461a22d739fb2284a6e313fb6cecf2871
Author:        Benjamin Thiel <b.thiel@xxxxxxxxx>
AuthorDate:    Sat, 16 May 2020 14:38:16 +02:00
Committer:     Borislav Petkov <bp@xxxxxxx>
CommitterDate: Tue, 19 May 2020 18:03:07 +02:00

x86/audit: Fix a -Wmissing-prototypes warning for ia32_classify_syscall()

Lift the prototype of ia32_classify_syscall() into its own header.

Signed-off-by: Benjamin Thiel <b.thiel@xxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Link: https://lkml.kernel.org/r/20200516123816.2680-1-b.thiel@xxxxxxxxx
---
 arch/x86/ia32/audit.c        | 1 +
 arch/x86/include/asm/audit.h | 7 +++++++
 arch/x86/kernel/audit_64.c   | 2 +-
 3 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 arch/x86/include/asm/audit.h

diff --git a/arch/x86/ia32/audit.c b/arch/x86/ia32/audit.c
index 3d21eab..6efe6cb 100644
--- a/arch/x86/ia32/audit.c
+++ b/arch/x86/ia32/audit.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <asm/unistd_32.h>
+#include <asm/audit.h>
 
 unsigned ia32_dir_class[] = {
 #include <asm-generic/audit_dir_write.h>
diff --git a/arch/x86/include/asm/audit.h b/arch/x86/include/asm/audit.h
new file mode 100644
index 0000000..36aec57
--- /dev/null
+++ b/arch/x86/include/asm/audit.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_AUDIT_H
+#define _ASM_X86_AUDIT_H
+
+int ia32_classify_syscall(unsigned int syscall);
+
+#endif /* _ASM_X86_AUDIT_H */
diff --git a/arch/x86/kernel/audit_64.c b/arch/x86/kernel/audit_64.c
index e1efe44..83d9cad 100644
--- a/arch/x86/kernel/audit_64.c
+++ b/arch/x86/kernel/audit_64.c
@@ -3,6 +3,7 @@
 #include <linux/types.h>
 #include <linux/audit.h>
 #include <asm/unistd.h>
+#include <asm/audit.h>
 
 static unsigned dir_class[] = {
 #include <asm-generic/audit_dir_write.h>
@@ -41,7 +42,6 @@ int audit_classify_arch(int arch)
 int audit_classify_syscall(int abi, unsigned syscall)
 {
 #ifdef CONFIG_IA32_EMULATION
-	extern int ia32_classify_syscall(unsigned);
 	if (abi == AUDIT_ARCH_I386)
 		return ia32_classify_syscall(syscall);
 #endif