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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-05-25 15:49:12 +0300 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2020-06-09 14:47:05 +0300 |
| commit | 3680c2e9f4254d1f033bf00f540e47a51f8f996b (patch) | |
| tree | 4d19ceb2e531f1055b1963fbb84546fb181261b8 /drivers/gpu/drm/i915 | |
| parent | 4da1ced1e57c885b714255b130e17845234669ff (diff) | |
| download | linux-3680c2e9f4254d1f033bf00f540e47a51f8f996b.tar.xz | |
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
(cherry picked from commit 22da5d846d54dd13183b57874b9d5611d583d7c8)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -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 40d42dcff0b7..ed9e53c373a7 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5206,6 +5206,9 @@ 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, |