| Message ID | 20190624054311.30256-9-hch@lst.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [01/17] mm: provide a print_vma_addr stub for !CONFIG_MMU | expand |
On Mon, 2019-06-24 at 07:43 +0200, Christoph Hellwig wrote: > Only call the SBI code if we are not running in M mode, and if we > didn't > do the SBI call, or it didn't succeed call wfi in a loop to at least > save some power. > > Signed-off-by: Christoph Hellwig <hch@lst.de> > --- > arch/riscv/kernel/reset.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/arch/riscv/kernel/reset.c b/arch/riscv/kernel/reset.c > index d0fe623bfb8f..2f5ca379747e 100644 > --- a/arch/riscv/kernel/reset.c > +++ b/arch/riscv/kernel/reset.c > @@ -8,8 +8,11 @@ > > static void default_power_off(void) > { > +#ifndef CONFIG_M_MODE > sbi_shutdown(); > - while (1); > +#endif > + while (1) > + wait_for_interrupt(); > } > > void (*pm_power_off)(void) = default_power_off; Reviewed-by: Atish Patra <atish.patra@wdc.com> Regards, Atish
diff --git a/arch/riscv/kernel/reset.c b/arch/riscv/kernel/reset.c index d0fe623bfb8f..2f5ca379747e 100644 --- a/arch/riscv/kernel/reset.c +++ b/arch/riscv/kernel/reset.c @@ -8,8 +8,11 @@ static void default_power_off(void) { +#ifndef CONFIG_M_MODE sbi_shutdown(); - while (1); +#endif + while (1) + wait_for_interrupt(); } void (*pm_power_off)(void) = default_power_off;
Only call the SBI code if we are not running in M mode, and if we didn't do the SBI call, or it didn't succeed call wfi in a loop to at least save some power. Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/riscv/kernel/reset.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)