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34 lines
858 B
Diff
34 lines
858 B
Diff
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From 55974977523c2c5089613549ea51c007d7a71b40 Mon Sep 17 00:00:00 2001
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From: Dom Cobley <popcornmix@gmail.com>
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Date: Thu, 16 Mar 2023 14:41:16 +0000
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Subject: [PATCH] reboot: Use power off rather than busy spinning when
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halt is requested
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Busy spinning after halt is dumb
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We've previously applied this patch to arch/arm
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but it is currenltly missing in arch/arm64
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Pi4 after "sudo halt" uses 520mA
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Pi4 after "sudo shutdown now" uses 310mA
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Make them both use the lower powered option
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Signed-off-by: Dom Cobley <popcornmix@gmail.com>
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---
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arch/arm64/kernel/process.c | 4 +---
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1 file changed, 1 insertion(+), 3 deletions(-)
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--- a/arch/arm64/kernel/process.c
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+++ b/arch/arm64/kernel/process.c
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@@ -96,9 +96,7 @@ void machine_shutdown(void)
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*/
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void machine_halt(void)
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{
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- local_irq_disable();
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- smp_send_stop();
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- while (1);
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+ machine_power_off();
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}
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/*
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