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Commit62b695662a("drm/i915: Only enable DDI IO power domains after enabling DPLL") changed how the DDI IO power domains get enabled, but neglected the need to enable those domains when enabling a DP connector with MST enabled, leading to Kernel panic - not syncing: Timeout: Not all CPUs entered broadcast exception handler Fixes:62b695662a("drm/i915: Only enable DDI IO power domains after enabling DPLL") Cc: Imre Deak <imre.deak@intel.com> Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Cc: David Weinehall <david.weinehall@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: intel-gfx@lists.freedesktop.org Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170301141318.3607-2-ander.conselvan.de.oliveira@intel.com
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.