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From: Imre Deak <imre.deak@intel.com>
To: <intel-gfx@lists.freedesktop.org>, <intel-xe@lists.freedesktop.org>
Cc: Vinod Govindapillai <vinod.govindapillai@intel.com>,
	Luca Coelho <luciano.coelho@intel.com>
Subject: [PATCH 15/16] drm/i915/dp: Fail state computation for invalid max sink compressed BPP value
Date: Mon, 15 Dec 2025 21:23:55 +0200	[thread overview]
Message-ID: <20251215192357.172201-16-imre.deak@intel.com> (raw)
In-Reply-To: <20251215192357.172201-1-imre.deak@intel.com>

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>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index dc2486aa12010..074aa472d33c8 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2622,8 +2622,7 @@ 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));
-- 
2.49.1


  parent reply	other threads:[~2025-12-15 19:24 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-15 19:23 [PATCH 00/16] drm/i915/dp: Clean up link BW/DSC slice config computation (fixes) Imre Deak
2025-12-15 19:23 ` [PATCH 01/16] drm/dp: Parse all DSC slice count caps for eDP 1.5 Imre Deak
2025-12-15 19:23 ` [PATCH 02/16] drm/dp: Add drm_dp_dsc_sink_slice_count_mask() Imre Deak
2025-12-15 19:23 ` [PATCH 03/16] drm/i915/dp: Fix DSC sink's slice count capability check Imre Deak
2025-12-15 19:23 ` [PATCH 04/16] drm/i915/dp: Return a fixed point BPP value from intel_dp_output_bpp() Imre Deak
2025-12-15 19:23 ` [PATCH 05/16] drm/i915/dp: Use a mode's crtc_clock vs. clock during state computation Imre Deak
2025-12-15 19:23 ` [PATCH 06/16] drm/i915/dp: Factor out intel_dp_link_bw_overhead() Imre Deak
2025-12-15 19:23 ` [PATCH 07/16] drm/i915/dp: Fix BW check in is_bw_sufficient_for_dsc_config() Imre Deak
2025-12-15 19:23 ` [PATCH 08/16] drm/i915/dp: Use the effective data rate for DP BW calculation Imre Deak
2025-12-15 19:23 ` [PATCH 09/16] drm/i915/dp: Use the effective data rate for DP compressed " Imre Deak
2025-12-15 19:23 ` [PATCH 10/16] drm/i915/dp: Account with MST, SSC BW overhead for uncompressed DP-MST stream BW Imre Deak
2025-12-15 19:23 ` [PATCH 11/16] drm/i915/dp: Account with DSC BW overhead for compressed DP-SST " Imre Deak
2025-12-15 19:23 ` [PATCH 12/16] drm/i915/dp: Account with pipe joiner max compressed BPP limit for DP-MST and eDP Imre Deak
2025-12-15 19:23 ` [PATCH 13/16] drm/i915/dp: Fail state computation for invalid min/max link BPP values Imre Deak
2025-12-15 19:23 ` [PATCH 14/16] drm/i915/dp: Fail state computation for invalid max throughput BPP value Imre Deak
2025-12-15 19:23 ` Imre Deak [this message]
2025-12-15 19:23 ` [PATCH 16/16] drm/i915/dp: Fail state computation for invalid DSC source input BPP values Imre Deak
2025-12-15 22:16 ` ✗ CI.checkpatch: warning for drm/i915/dp: Clean up link BW/DSC slice config computation (fixes) Patchwork
2025-12-15 22:17 ` ✓ CI.KUnit: success " Patchwork
2025-12-15 22:36 ` ✗ CI.checksparse: warning " Patchwork
2025-12-15 23:31 ` ✓ Xe.CI.BAT: success " Patchwork
2025-12-16  9:27 ` ✗ Xe.CI.Full: failure " Patchwork
2025-12-16 17:30 ` [PATCH 00/16] " Imre Deak
2025-12-18 12:00   ` Imre Deak
2025-12-19 13:28     ` Maarten Lankhorst
     [not found] ` <176585164976.91286.8511052780566467299@a3b018990fe9>
2025-12-19 15:21   ` ✓ i915.CI.Full: success for " Imre Deak

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