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reboot: Use power off rather than busy spinning when halt is requested

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reboot: Use power off rather than busy spinning when halt is requested

Busy spinning after halt is dumb
We've previously applied this patch to arch/arm
but it is currenltly missing in arch/arm64

Pi4 after "sudo halt" uses 520mA
Pi4 after "sudo shutdown now" uses 310mA

Make them both use the lower powered option

Signed-off-by: Dom Cobley <popcornmix@gmail.com>
This commit is contained in:
popcornmix
2016-04-05 19:40:12 +01:00
committed by Dom Cobley
parent 1cd99f2333
commit 07d5877ed2
2 changed files with 2 additions and 6 deletions
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4
arch/arm/kernel/reboot.c
View File

@@ -102,9 +102,7 @@ void machine_shutdown(void)
*/ */
void machine_halt(void) void machine_halt(void)
{ {
local_irq_disable(); machine_power_off();
smp_send_stop();
while (1);
} }
/* /*

4
arch/arm64/kernel/process.c
View File

@@ -98,9 +98,7 @@ void machine_shutdown(void)
*/ */
void machine_halt(void) void machine_halt(void)
{ {
local_irq_disable(); machine_power_off();
smp_send_stop();
while (1);
} }
/* /*