diff mbox series

[2/3] power: reset: sc27xx: Change to use cpu_down()

Message ID fadd883957d4283d3149f00ade8e7a7d3fc912b6.1583740881.git.baolin.wang7@gmail.com (mailing list archive)
State Not Applicable, archived
Headers show
Series Some optimization for SC27XX poweroff driver | expand

Commit Message

Baolin Wang March 9, 2020, 8:18 a.m. UTC 
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(-)
diff mbox series

Patch

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
 }