diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2014-09-26 00:03:17 +0000 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2014-09-26 00:00:22 -0700 |
| commit | 1a9607a3be14a43868c5e6a35962e7f6be9bcfe1 (patch) | |
| tree | cd509ccd7eaf3c43a9c5379493a51b96061eada0 /arch | |
| parent | 1c7ffc32eaadfae3e7ab106359af0cf21b7e94c1 (diff) | |
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@roeck-us.net>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jonas Jensen <jonas.jensen@gmail.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tomasz Figa <t.figa@samsung.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/kernel/process.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 81ef686a91ca..ea279f7a8767 100644 --- a/arch/arm/kernel/process.c +++ b/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); |