On Thu, 22 Mar 2012 18:25:55 -0400, Sean Paul <seanpaul at chromium.org> wrote: > Add a mutex to protect resume_force_mode from being called multiple > times. This fixes a bug observed on SNB where two wake sources call > resume_force_mode and the FDI training fails as a result. The user > facing result of this is complete screen corruption.
Looks like a bug in i915_drv.c for calling that function without holding the mode_config.lock -Chris -- Chris Wilson, Intel Open Source Technology Centre
