From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx> Hi This series contains a collection of fixes for problems I found on the runtime PM code. All these problems either result in failure of some pm_pc8 test, or result in a Kernel WARN/DRM_ERROR when running pm_pc8, or there is a patch in this series that adds a WARN that will be triggered if we ever unfix the problem. Notice that nothing comes from bugzilla reports (see below). So the real fixes of this series are patches 1-5. Patches 6+ either only fix debugfs files, or add more WARNs to make sure the problems we solve here remain solved, or do small cleanups. I did _not_ add Cc: stable@xxxxxxxxxxxxxxx tags to the patches for the following reasons reasons: (i) I simply don't know if we want them; (ii) I have other 44 patches that should be applied on top of these, so having part of the series in -fixes and another in -next can be a mess; and (iii) runtime PM is still disabled by default (although a simple sysfs write can enable it, and powertop makes this even easier) and its autosuspend delay is set to 10s, plus 5ms of PC8 timeout, so the problems are either very hard or impossible to reproduce without i915.pc8_timeout=0 (and that's why, I believe, we don't have bug reports for these things). But if we wan to Cc stable, it's fine too: we can do this with all the patches, or just with 1-5, or more. Thanks, Paulo Chris Wilson (1): drm/i915: Accurately track when we mark the hardware as idle/busy Paulo Zanoni (10): drm/i915: put runtime PM only at the end of intel_mark_idle drm/i915: put runtime PM only when we actually release force_wake drm/i915: get runtime PM at intel_set_mode drm/i915: get runtime PM while trying to detect CRT drm/i915: get/put runtime PM in more places at i915_debugfs.c drm/i915: kill dev_priv->pc8.gpu_idle drm/i915: call assert_device_not_suspended at gen6_force_wake_work drm/i915: assert force wake is disabled when we runtime suspend drm/i915: don't get/put runtime PM at the debugfs forcewake file drm/i915: assert we're not runtime suspended when writing registers drivers/gpu/drm/i915/i915_debugfs.c | 21 +++++++++++++--- drivers/gpu/drm/i915/i915_drv.c | 1 + drivers/gpu/drm/i915/i915_drv.h | 19 ++++++++++----- drivers/gpu/drm/i915/intel_crt.c | 26 ++++++++++++++------ drivers/gpu/drm/i915/intel_display.c | 47 ++++++++++++++---------------------- drivers/gpu/drm/i915/intel_pm.c | 3 +-- drivers/gpu/drm/i915/intel_uncore.c | 34 ++++++++++++++++++-------- 7 files changed, 94 insertions(+), 57 deletions(-) -- 1.8.5.3 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
