linux-kernel - [PATCH 06/16] ARM: tcm: move tcm

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Message-Id: <20230516154605.517690-7-arnd@kernel.org>
Date:   Tue, 16 May 2023 17:45:55 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Russell King <linux@...linux.org.uk>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Oleg Nesterov <oleg@...hat.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Pavel Machek <pavel@....cz>,
        Linus Walleij <linus.walleij@...aro.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-trace-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: [PATCH 06/16] ARM: tcm: move tcm_init() prototype to asm/tcm.h

From: Arnd Bergmann <arnd@...db.de>

The function definition is in a file that does not include the
header with the declaration:

arch/arm/kernel/tcm.c:256:13: error: no previous prototype for 'tcm_init'

Move the declaration to a global header where it can actually be
included.

Fixes: de40614e92bf ("ARM: 7694/1: ARM, TCM: initialize TCM in paging_init(), instead of setup_arch()")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm/include/asm/tcm.h | 11 ++++++++---
 arch/arm/mm/mmu.c          |  2 +-
 arch/arm/mm/tcm.h          | 17 -----------------
 3 files changed, 9 insertions(+), 21 deletions(-)
 delete mode 100644 arch/arm/mm/tcm.h

diff --git a/arch/arm/include/asm/tcm.h b/arch/arm/include/asm/tcm.h
index d8bd8a4b0ede..e1f7dca86a22 100644
--- a/arch/arm/include/asm/tcm.h
+++ b/arch/arm/include/asm/tcm.h
@@ -9,9 +9,7 @@
 #ifndef __ASMARM_TCM_H
 #define __ASMARM_TCM_H
 
-#ifndef CONFIG_HAVE_TCM
-#error "You should not be including tcm.h unless you have a TCM!"
-#endif
+#ifdef CONFIG_HAVE_TCM
 
 #include <linux/compiler.h>
 
@@ -29,4 +27,11 @@ void tcm_free(void *addr, size_t len);
 bool tcm_dtcm_present(void);
 bool tcm_itcm_present(void);
 
+void __init tcm_init(void);
+#else
+/* No TCM support, just blank inlines to be optimized out */
+static inline void tcm_init(void)
+{
+}
+#endif
 #endif
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 463fc2a8448f..f3a52c08a200 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -21,6 +21,7 @@
 #include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/smp_plat.h>
+#include <asm/tcm.h>
 #include <asm/tlb.h>
 #include <asm/highmem.h>
 #include <asm/system_info.h>
@@ -37,7 +38,6 @@
 
 #include "fault.h"
 #include "mm.h"
-#include "tcm.h"
 
 extern unsigned long __atags_pointer;
 
diff --git a/arch/arm/mm/tcm.h b/arch/arm/mm/tcm.h
deleted file mode 100644
index 6b80a760d875..000000000000
--- a/arch/arm/mm/tcm.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2008-2009 ST-Ericsson AB
- * TCM memory handling for ARM systems
- *
- * Author: Linus Walleij <linus.walleij@...ricsson.com>
- * Author: Rickard Andersson <rickard.andersson@...ricsson.com>
- */
-
-#ifdef CONFIG_HAVE_TCM
-void __init tcm_init(void);
-#else
-/* No TCM support, just blank inlines to be optimized out */
-static inline void tcm_init(void)
-{
-}
-#endif
-- 
2.39.2