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drm/i915/dg2: Update to bigjoiner path 

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>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210723174239.1551352-30-matthew.d.roper@intel.com
This commit is contained in:
Animesh Manna 2021-07-23 10:42:38 -07:00 committed by Matt Roper
parent 7711749a60
commit 11955c87d2
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/display/intel_display.c
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@ -9198,6 +9198,9 @@ 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);