git.openwrt.org Git - openwrt/staging/blocktrron.git/blob

   1 From 55974977523c2c5089613549ea51c007d7a71b40 Mon Sep 17 00:00:00 2001
   2 From: Dom Cobley <popcornmix@gmail.com>
   3 Date: Thu, 16 Mar 2023 14:41:16 +0000
   4 Subject: [PATCH] reboot: Use power off rather than busy spinning when
   5  halt is requested
   6
   7 Busy spinning after halt is dumb
   8 We've previously applied this patch to arch/arm
   9 but it is currenltly missing in arch/arm64
  10
  11 Pi4 after "sudo halt" uses 520mA
  12 Pi4 after "sudo shutdown now" uses 310mA
  13
  14 Make them both use the lower powered option
  15
  16 Signed-off-by: Dom Cobley <popcornmix@gmail.com>
  17 ---
  18  arch/arm64/kernel/process.c | 4 +---
  19  1 file changed, 1 insertion(+), 3 deletions(-)
  20
  21 --- a/arch/arm64/kernel/process.c
  22 +++ b/arch/arm64/kernel/process.c
  23 @@ -96,9 +96,7 @@ void machine_shutdown(void)
  24   */
  25  void machine_halt(void)
  26  {
  27 -       local_irq_disable();
  28 -       smp_send_stop();
  29 -       while (1);
  30 +       machine_power_off();
  31  }
  32
  33  /*