From: Animesh Manna animesh.manna@intel.com
In verify_mpllb_state() encoder is retrieved from best_encoder of connector_state. As there will be only one connector_state for bigjoiner and checking encoder may not be needed for bigjoiner-slave. This code path related to mpll is done on dg2 and need this fix to avoid null pointer dereference issue.
Cc: Manasi Navare manasi.d.navare@intel.com Signed-off-by: Animesh Manna animesh.manna@intel.com Signed-off-by: Matt Roper matthew.d.roper@intel.com --- drivers/gpu/drm/i915/display/intel_display.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 9655f1b1b41b..3f4e811145b6 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -9153,6 +9153,9 @@ verify_mpllb_state(struct intel_atomic_state *state, if (!new_crtc_state->hw.active) return;
+ if (new_crtc_state->bigjoiner_slave) + return; + encoder = intel_get_crtc_new_encoder(state, new_crtc_state); intel_mpllb_readout_hw_state(encoder, &mpllb_hw_state);