Commit 86fe639a authored Oct 30, 2019 by Christoph Hellwig Committed by Paul Walmsley Nov 05, 2019

riscv: enter WFI in default_power_off() if SBI does not shutdown



Provide a new default fallback power off that just sits in a wfi loop
to save some power.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
[paul.walmsley@sifive.com: split the WFI fix apart from the
 nommu-related default_power_off() changes]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>

parent a99d8080

arch/riscv/kernel/reset.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -10,7 +10,8 @@
		static void default_power_off(void)
		{
		sbi_shutdown();
		while (1);
		while (1)
		wait_for_interrupt();
		}

		void (*pm_power_off)(void) = default_power_off;

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