| Message ID | fadd883957d4283d3149f00ade8e7a7d3fc912b6.1583740881.git.baolin.wang7@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | Some optimization for SC27XX poweroff driver | expand |
diff --git a/drivers/power/reset/sc27xx-poweroff.c b/drivers/power/reset/sc27xx-poweroff.c index 2bedd4c..91b5ece 100644 --- a/drivers/power/reset/sc27xx-poweroff.c +++ b/drivers/power/reset/sc27xx-poweroff.c @@ -29,10 +29,13 @@ */ static void sc27xx_poweroff_shutdown(void) { -#ifdef CONFIG_PM_SLEEP_SMP - int cpu = smp_processor_id(); +#ifdef CONFIG_HOTPLUG_CPU + int cpu; - freeze_secondary_cpus(cpu); + for_each_online_cpu(cpu) { + if (cpu != smp_processor_id()) + cpu_down(cpu); + } #endif }
To allow the SC27XX driver can be built as a module, and the freeze_secondary_cpus() symbol is not exported, thus we can change to use the exported cpu_down() API to shut down other cpus to avoid racing, which is same as the freeze_secondary_cpus(). Signed-off-by: Baolin Wang <baolin.wang7@gmail.com> --- drivers/power/reset/sc27xx-poweroff.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)