Commit 74ba89c0 authored by Imre Deak's avatar Imre Deak

drm/i915: Fix DPT suspend/resume on !HAS_DISPLAY platforms

The drm.mode_config state is not initialized in case of !HAS_DISPLAY
so taking the fb_lock and iterating the fb list won't work on those
platforms. Skip the suspend/resume with an explicit check for this.

Fixes: 9755f055 ("drm/i915: Restore memory mapping for DPT FBs across system suspend/resume")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211125171603.1775179-1-imre.deak@intel.com
parent 86c82c8a
......@@ -183,6 +183,9 @@ void intel_dpt_resume(struct drm_i915_private *i915)
{
struct drm_framebuffer *drm_fb;
if (!HAS_DISPLAY(i915))
return;
mutex_lock(&i915->drm.mode_config.fb_lock);
drm_for_each_fb(drm_fb, &i915->drm) {
struct intel_framebuffer *fb = to_intel_framebuffer(drm_fb);
......@@ -207,6 +210,9 @@ void intel_dpt_suspend(struct drm_i915_private *i915)
{
struct drm_framebuffer *drm_fb;
if (!HAS_DISPLAY(i915))
return;
mutex_lock(&i915->drm.mode_config.fb_lock);
drm_for_each_fb(drm_fb, &i915->drm) {
......
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