The kernel thread function agent_thread_fn() invokes the try_to_freeze()
in its loop. But all the kernel threads are non-freezable by default.
So if we want to make a kernel thread to be freezable, we have to invoke
set_freezable() explicitly.
Signed-off-by: Kevin Hao <haoke...@gmail.com>
---
arch/powerpc/platforms/83xx/suspend.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/platforms/83xx/suspend.c
b/arch/powerpc/platforms/83xx/suspend.c
index 9833c36bda83..eed325ed08cc 100644
--- a/arch/powerpc/platforms/83xx/suspend.c
+++ b/arch/powerpc/platforms/83xx/suspend.c
@@ -261,6 +261,8 @@ static int mpc83xx_suspend_begin(suspend_state_t state)
static int agent_thread_fn(void *data)
{
+ set_freezable();
+
while (1) {
wait_event_interruptible(agent_wq, pci_pm_state >= 2);
try_to_freeze();
--
2.39.2
