Commits
Imre Deak committed 5d77d9c5e17
drm/i915: add missing rpm ref to i915_gem_pwrite_ioctl Without this RPM ref we can hit the device suspended WARN via: i915_gem_object_pin()->ggtt_bind_vma->gen6_ggtt_insert_entries(). I noticed this on my BYT while keeping the i915 device in runtime suspended state for a while. I chose this place to take the ref to avoid the possible deadlock via the mutex_lock taken both later in this function and in the runtime suspend handler. This can happen if an RPM suspend event is queued and need to be flushed before taking the RPM ref. Testcase: igt/pm_rpm/gem-evict-pwrite Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87363 Signed-off-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>