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From: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	intel-xe@lists.freedesktop.org
Cc: harry.wentland@amd.com, louis.chauvet@bootlin.com,
	mwen@igalia.com, contact@emersion.fr, alex.hung@amd.com,
	daniels@collabora.com, uma.shankar@intel.com,
	maarten.lankhorst@intel.com, pekka.paalanen@collabora.com,
	pranay.samala@intel.com, swati2.sharma@intel.com,
	stable@vger.kernel.org
Subject: [PATCH 05/10] drm/i915/color: Fix HDR pre-CSC LUT programming loop
Date: Fri,  6 Mar 2026 22:23:02 +0530	[thread overview]
Message-ID: <20260306165307.3233194-6-chaitanya.kumar.borah@intel.com> (raw)
In-Reply-To: <20260306165307.3233194-1-chaitanya.kumar.borah@intel.com>

From: Pranay Samala <pranay.samala@intel.com>

The integer lut programming loop never executes completely due to
incorrect condition (i++ > 130).

Fix to properly program 129th+ entries for values > 1.0.

Cc: <stable@vger.kernel.org> #v6.19
Fixes: 82caa1c8813f ("drm/i915/color: Program Pre-CSC registers")
Signed-off-by: Pranay Samala <pranay.samala@intel.com>
---
 drivers/gpu/drm/i915/display/intel_color.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index e7950655434b..6d1cffc6d2be 100644
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -3976,7 +3976,7 @@ xelpd_program_plane_pre_csc_lut(struct intel_dsb *dsb,
 				intel_de_write_dsb(display, dsb,
 						   PLANE_PRE_CSC_GAMC_DATA_ENH(pipe, plane, 0),
 						   (1 << 24));
-			} while (i++ > 130);
+			} while (i++ < 130);
 		} else {
 			for (i = 0; i < lut_size; i++) {
 				u32 v = (i * ((1 << 24) - 1)) / (lut_size - 1);
-- 
2.25.1


  parent reply	other threads:[~2026-03-06 17:19 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-06 16:52 [PATCH 00/10] drm/i915/color: Enable SDR plane color pipeline Chaitanya Kumar Borah
2026-03-06 16:52 ` [PATCH 01/10] drm/colorop: Add DRM_COLOROP_CSC_FF Chaitanya Kumar Borah
2026-03-08 22:26   ` Claude review: " Claude Code Review Bot
2026-03-06 16:52 ` [PATCH 02/10] drm/i915/color: Add CSC on SDR plane color pipeline Chaitanya Kumar Borah
2026-03-08 22:26   ` Claude review: " Claude Code Review Bot
2026-03-06 16:53 ` [PATCH 03/10] drm/i915/color: Program fixed-function CSC on SDR planes Chaitanya Kumar Borah
2026-03-08 22:26   ` Claude review: " Claude Code Review Bot
2026-03-06 16:53 ` [PATCH 04/10] drm/i915/color: Add support for 1D LUT in " Chaitanya Kumar Borah
2026-03-08 22:26   ` Claude review: " Claude Code Review Bot
2026-03-06 16:53 ` Chaitanya Kumar Borah [this message]
2026-03-08 22:26   ` Claude review: drm/i915/color: Fix HDR pre-CSC LUT programming loop Claude Code Review Bot
2026-03-06 16:53 ` [PATCH 06/10] drm/i915/color: Extract HDR pre-CSC LUT programming to helper function Chaitanya Kumar Borah
2026-03-08 22:26   ` Claude review: " Claude Code Review Bot
2026-03-06 16:53 ` [PATCH 07/10] drm/i915/color: Program Pre-CSC registers for SDR Chaitanya Kumar Borah
2026-03-08 22:26   ` Claude review: " Claude Code Review Bot
2026-03-06 16:53 ` [PATCH 08/10] drm/i915/color: Extract HDR post-CSC LUT programming to helper function Chaitanya Kumar Borah
2026-03-08 22:26   ` Claude review: " Claude Code Review Bot
2026-03-06 16:53 ` [PATCH 09/10] drm/i915/color: Program Plane Post CSC registers for SDR planes Chaitanya Kumar Borah
2026-03-08 22:26   ` Claude review: " Claude Code Review Bot
2026-03-06 16:53 ` [PATCH 10/10] drm/i915/color: Add color pipeline support " Chaitanya Kumar Borah
2026-03-08 22:26   ` Claude review: " Claude Code Review Bot
2026-03-08 22:26 ` Claude review: drm/i915/color: Enable SDR plane color pipeline Claude Code Review Bot

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