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drm/i915/dp: Fail state computation for invalid max sink compressed BPP value

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There is no reason to accept an invalid maximum sink compressed BPP
value (i.e. 0), fail the state computation in this case.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251215192357.172201-16-imre.deak@intel.com
This commit is contained in:
Imre Deak 2025-12-15 21:23:55 +02:00
parent 5c2d799491
commit a63bbb8ddd
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/i915/display/intel_dp.c
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@ -2623,8 +2623,7 @@ intel_dp_compute_config_link_bpp_limits(struct intel_dp *intel_dp,
dsc_sink_max_bpp = intel_dp_dsc_sink_max_compressed_bpp(connector,
crtc_state,
limits->pipe.max_bpp / 3);
dsc_max_bpp = dsc_sink_max_bpp ?
min(dsc_sink_max_bpp, dsc_src_max_bpp) : dsc_src_max_bpp;
dsc_max_bpp = min(dsc_sink_max_bpp, dsc_src_max_bpp);
dsc_max_bpp = min(dsc_max_bpp, joiner_max_bpp);
max_link_bpp_x16 = min(max_link_bpp_x16, fxp_q4_from_int(dsc_max_bpp));