linux-kernel - [PATCH 3.4 005/125] ARM: pxa: remove incorrect __init annotation on pxa27x_set

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Date:   Wed, 12 Oct 2016 20:32:01 +0800
From:   lizf@...nel.org
To:     stable@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 005/125] ARM: pxa: remove incorrect __init annotation on pxa27x_set_pwrmode

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

3.4.113-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 54c09889bff6d99c8733eed4a26c9391b177c88b upstream.

The z2 machine calls pxa27x_set_pwrmode() in order to power off
the machine, but this function gets discarded early at boot because
it is marked __init, as pointed out by kbuild:

WARNING: vmlinux.o(.text+0x145c4): Section mismatch in reference from the function z2_power_off() to the function .init.text:pxa27x_set_pwrmode()
The function z2_power_off() references
the function __init pxa27x_set_pwrmode().
This is often because z2_power_off lacks a __init
annotation or the annotation of pxa27x_set_pwrmode is wrong.

This removes the __init section modifier to fix rebooting and the
build error.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Fixes: ba4a90a6d86a ("ARM: pxa/z2: fix building error of pxa27x_cpu_suspend() no longer available")
Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 arch/arm/mach-pxa/include/mach/pxa27x.h | 2 +-
 arch/arm/mach-pxa/pxa27x.c              | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-pxa/include/mach/pxa27x.h b/arch/arm/mach-pxa/include/mach/pxa27x.h
index 7cff640..66c4cbf 100644
--- a/arch/arm/mach-pxa/include/mach/pxa27x.h
+++ b/arch/arm/mach-pxa/include/mach/pxa27x.h
@@ -21,7 +21,7 @@
 
 extern void __init pxa27x_map_io(void);
 extern void __init pxa27x_init_irq(void);
-extern int __init pxa27x_set_pwrmode(unsigned int mode);
+extern int pxa27x_set_pwrmode(unsigned int mode);
 extern void pxa27x_cpu_pm_enter(suspend_state_t state);
 
 #define pxa27x_handle_irq	ichp_handle_irq
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index a2fe795..f7c9978 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -242,7 +242,7 @@ static struct clk_lookup pxa27x_clkregs[] = {
  */
 static unsigned int pwrmode = PWRMODE_SLEEP;
 
-int __init pxa27x_set_pwrmode(unsigned int mode)
+int pxa27x_set_pwrmode(unsigned int mode)
 {
 	switch (mode) {
 	case PWRMODE_SLEEP:
-- 
1.9.1