Commit 22da5d84 authored by Chris Wilson's avatar Chris Wilson

drm/i915/display: Only query DP state of a DDI encoder

Avoid a NULL dereference for a mismatched encoder type, hit when
probing state for all encoders.

This is a band aid to prevent the OOPS as the right fix is "probably to
swap the psr vs infoframes.enable checks, or outright disappear from
this function" (Ville).

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/1892Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Acked-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200525124912.16019-1-chris@chris-wilson.co.uk
parent fc0e1270
...@@ -5212,6 +5212,9 @@ void intel_read_dp_sdp(struct intel_encoder *encoder, ...@@ -5212,6 +5212,9 @@ void intel_read_dp_sdp(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state, struct intel_crtc_state *crtc_state,
unsigned int type) unsigned int type)
{ {
if (encoder->type != INTEL_OUTPUT_DDI)
return;
switch (type) { switch (type) {
case DP_SDP_VSC: case DP_SDP_VSC:
intel_read_dp_vsc_sdp(encoder, crtc_state, intel_read_dp_vsc_sdp(encoder, crtc_state,
......
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