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Message-Id: <1486933652-28245-3-git-send-email-me@tobin.cc>
Date: Mon, 13 Feb 2017 08:07:32 +1100
From: "Tobin C. Harding" <me@...in.cc>
To: linux-kernel@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
"Tobin C. Harding" <me@...in.cc>
Subject: [PATCH v2 2/2] x86/purgatory: Fix sparse warning, symbol not declared
Sparse emits warning, 'symbol not declared' for a function that has
neither file scope nor a forward declaration. The functions only call
site is an ASM file.
Add a header file with the function declaration. Include the
header file in the C source file defining the function in order
to fix the sparse warning. Include the header file in ASM file
containing the call site thereby adding documentation of usage.
Signed-off-by: Tobin C. Harding <me@...in.cc>
---
arch/x86/purgatory/purgatory.c | 1 +
arch/x86/purgatory/purgatory.h | 7 +++++++
arch/x86/purgatory/setup-x86_64.S | 3 ++-
3 files changed, 10 insertions(+), 1 deletion(-)
create mode 100644 arch/x86/purgatory/purgatory.h
diff --git a/arch/x86/purgatory/purgatory.c b/arch/x86/purgatory/purgatory.c
index 2a5f437..b6d5c89 100644
--- a/arch/x86/purgatory/purgatory.c
+++ b/arch/x86/purgatory/purgatory.c
@@ -11,6 +11,7 @@
*/
#include "sha256.h"
+#include "purgatory.h"
#include "../boot/string.h"
struct sha_region {
diff --git a/arch/x86/purgatory/purgatory.h b/arch/x86/purgatory/purgatory.h
new file mode 100644
index 0000000..b2e859f
--- /dev/null
+++ b/arch/x86/purgatory/purgatory.h
@@ -0,0 +1,7 @@
+#ifndef PURGATORY_H
+#define PURGATORY_H
+
+extern void purgatory(void);
+
+#endif /* PURGATORY_H */
+
diff --git a/arch/x86/purgatory/setup-x86_64.S b/arch/x86/purgatory/setup-x86_64.S
index fe3c91b..7ed06e9 100644
--- a/arch/x86/purgatory/setup-x86_64.S
+++ b/arch/x86/purgatory/setup-x86_64.S
@@ -9,7 +9,8 @@
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
-
+ #include "purgatory.h"
+
.text
.globl purgatory_start
.balign 16
--
2.7.4
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