[igt-dev] [RFC i-g-t 09/11] Add test to verify session key renewed after suspend-resume cycle

[Chris Wilson]

Quoting Alan Previn (2021-03-02 22:53:32)
> +static void trigger_powermgt_suspend_cycle(int i915,
> +       struct powermgt_data *pm)
> +{
> +       igt_pm_enable_sata_link_power_management();
> +
> +
> +       igt_system_suspend_autoresume(SUSPEND_STATE_MEM, SUSPEND_TEST_DEVICES);
> +
> +       igt_wait_for_pm_status(IGT_RUNTIME_PM_STATUS_SUSPENDED);
> +       gem_test_engine(i915, I915_EXEC_RENDER);
> +       while ((!igt_wait_for_pm_status(IGT_RUNTIME_PM_STATUS_ACTIVE))) {

With an autosuspend delay of 0, this is not guaranteed to ever report
ACTIVE.

Just drop everything after wait_for_pm_status(SUSPENDED) as clearly
using the protected rendercopy must wake the device.
-Chris