linux57-tkg: The execution of finish_cpu when offlining cores introduced with https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bf2c59fce4074e55d622089b34be3a6bc95484fb breaks suspend on our CPU schedulers. Skipping the call to fallback to idle_task_exit fixes it.

There are other issues regarding suspend upstream but that should cover our side of the coin.

https://gitlab.com/alfredchen/projectc/-/issues/17

Fixes https://github.com/Frogging-Family/linux-tkg/issues/24

linux57-tkg/linux57-tkg-patches/0004-5.7-ck1.patch

@@ -13124,3 +13124,19 @@ index fdbdfb7bce92..fa8e8faf3eb3 100644
  	} while (--timeout > 0);
  	if (alive)
  		dev_err(line6pcm->line6->ifcdev,
+diff --git a/kernel/cpu.c b/kernel/cpu.c
+index 244d305443773..90b77028233b0 100644
+--- a/kernel/cpu.c
++++ b/kernel/cpu.c
+@@ -1565,7 +1565,11 @@ static struct cpuhp_step cpuhp_hp_states[] = {
+ 	[CPUHP_BRINGUP_CPU] = {
+ 		.name			= "cpu:bringup",
+ 		.startup.single		= bringup_cpu,
++#ifdef CONFIG_SCHED_MUQSS
++		.teardown.single	= NULL,
++#else
+ 		.teardown.single	= finish_cpu,
++#endif
+ 		.cant_stop		= true,
+ 	},
+ 	/* Final state before CPU kills itself */