diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-05-25 13:49:12 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-05-26 12:53:52 +0100 |
| commit | 22da5d846d54dd13183b57874b9d5611d583d7c8 (patch) | |
| tree | 33294d340b2c9c02a5d678a6da1c8fb572bad839 /drivers/gpu/drm/i915/display | |
| parent | fc0e127022162653195788680973eefe72806595 (diff) | |
| download | linux-22da5d846d54dd13183b57874b9d5611d583d7c8.tar.gz | |
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/1892
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200525124912.16019-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/display')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 1768731678a1..4749d2fe2324 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5212,6 +5212,9 @@ void intel_read_dp_sdp(struct intel_encoder *encoder, struct intel_crtc_state *crtc_state, unsigned int type) { + if (encoder->type != INTEL_OUTPUT_DDI) + return; + switch (type) { case DP_SDP_VSC: intel_read_dp_vsc_sdp(encoder, crtc_state, |