On 10/03/2014 03:30 AM, Catalin Marinas wrote:

On Tue, Sep 30, 2014 at 07:00:45PM +0100, Guenter Roeck wrote:

quoted

The kernel core now supports a poweroff handler call chain
to remove power from the system. Call it if pm_power_off
is set to NULL.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <redacted>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
  arch/arm64/kernel/process.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 398ab05..cc0c63e 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c

@@ -157,6 +157,8 @@ void machine_power_off(void)
  	smp_send_stop();
  	if (pm_power_off)
  		pm_power_off();
+	else
+		do_kernel_poweroff();

Acked-by: Catalin Marinas <catalin.marinas@arm.com>

As others already stated, I think we should eventually remove
pm_power_off entirely.

Hi Catalin,
yes, already working on it. As suggested by others, I'll move pm_power_off
to a central location (no need to declare the same variable for each
architecture) and hide the call to it in do_kernel_poweroff() as a
first step. You'll see this in the next version of the series.
This will make it much easier to remove it later on.

Thanks,
Guenter