The patch titled
Subject: arm: support restart through restart handler call chain
has been added to the -mm tree. Its filename is
arm-support-restart-through-restart-handler-call-chain.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/arm-support-restart-through-restart-handler-call-chain.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/arm-support-restart-through-restart-handler-call-chain.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Guenter Roeck <linux@xxxxxxxxxxxx>
Subject: arm: support restart through restart handler call chain
The kernel core now supports a restart handler call chain for system
restart functions.
With this change, the arm_pm_restart callback is now optional, so drop its
initialization and check if it is set before calling it. Only call the
kernel restart handler if arm_pm_restart is not set.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Acked-by: Heiko Stuebner <heiko@xxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jonas Jensen <jonas.jensen@xxxxxxxxx>
Cc: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Tomasz Figa <t.figa@xxxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Wim Van Sebroeck <wim@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/kernel/process.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff -puN arch/arm/kernel/process.c~arm-support-restart-through-restart-handler-call-chain arch/arm/kernel/process.c
--- a/arch/arm/kernel/process.c~arm-support-restart-through-restart-handler-call-chain
+++ a/arch/arm/kernel/process.c
@@ -114,17 +114,13 @@ void soft_restart(unsigned long addr)
BUG();
}
-static void null_restart(enum reboot_mode reboot_mode, const char *cmd)
-{
-}
-
/*
* Function pointers to optional machine specific functions
*/
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
-void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd) = null_restart;
+void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);
EXPORT_SYMBOL_GPL(arm_pm_restart);
/*
@@ -230,7 +226,10 @@ void machine_restart(char *cmd)
local_irq_disable();
smp_send_stop();
- arm_pm_restart(reboot_mode, cmd);
+ if (arm_pm_restart)
+ arm_pm_restart(reboot_mode, cmd);
+ else
+ do_kernel_restart(cmd);
/* Give a grace period for failure to restart of 1s */
mdelay(1000);
_
Patches currently in -mm which might be from linux@xxxxxxxxxxxx are
kernel-add-support-for-kernel-restart-handler-call-chain.patch
power-restart-call-machine_restart-instead-of-arm_pm_restart.patch
arm64-support-restart-through-restart-handler-call-chain.patch
arm-support-restart-through-restart-handler-call-chain.patch
watchdog-moxart-register-restart-handler-with-kernel-restart-handler.patch
watchdog-alim7101-register-restart-handler-with-kernel-restart-handler.patch
watchdog-sunxi-register-restart-handler-with-kernel-restart-handler.patch
arm-arm64-unexport-restart-handlers.patch
watchdog-s3c2410-add-restart-handler.patch
clk-samsung-register-restart-handlers-for-s3c2412-and-s3c2443.patch
clk-rockchip-add-restart-handler.patch
linux-next.patch
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