drm/i915: fix RPS on runtime suspend
With this patch, the RPS sequence for runtime suspend/resume is
exactly like the sequence for S3 suspend/resume:
- flush_delayed_work(&dev_priv->rps.delayed_resume_work)
- intel_runtime_pm_disable_interrupts()
- intel_suspend_gt_powersave()
(suspended)
- intel_runtime_pm_enable_interrupts()
- intel_enable_gt_powersave()
With this, we get rid of WARNs that are currently intermittently
triggered by the system-suspend-execbuf subtest of runtime PM. Notice
that these WARNs could also be triggered in other ways that involved
doing lots of RPM suspend/resume cycles just after a system S3 resume.
Testcase: igt/pm_rpm/system-suspend-execbuf
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=82939
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1 file changed