From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F4ED2DFF04; Sun, 7 Jun 2026 10:52:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780829578; cv=none; b=HxNXG3D+GubZAZVBuZImEezQvfPUSQDmybM17Hd20WceByxF4dK7itbw9YuuUf2OSI1nF4xQeBeazsOOtoUY2cijWwJ4e87i8Ks69zkG8XTGubYTl63/nklN5pghh2uPO39qoItB7he7lPv7/wu28Hy8kccTJkFsMnCUjBY1zWs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780829578; c=relaxed/simple; bh=8diRm4w09Kms5kKLa76RYY59yoV4PBmp02fW+DiONiI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZhjLqim22e+XvEkowU1mnMV8/Dr2RdnkRKLAie0FNBrCTT0ufrZH7nOh/GstVvLl9a10PTAZ0ladjL+KMejEPYs7DcsyZgphXdSR98OAApHW+O1Htx+BwyKTJtiiqQOSmwv1hYKUvLYxfCXabYDQEUXjnq6iw7+iW4U62XpbfxY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=y+534sKQ; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="y+534sKQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B66FA1F00893; Sun, 7 Jun 2026 10:52:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780829577; bh=eXKh1Dcqohsd14C71rd+LRa86L2rwouG8kyrZLC/jBI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=y+534sKQkigBnpbUyhA1lr51xDuLnNnLn3JWZfnoOCie9sO9Fjy/I9VqCp0oBOCXv IN8WRcbv7XFQ0Qbl7lPeql0cS07U30OVNPjUf84InpcyhxnFSX6eyvTNzLbGRmZ4kx bqzFxClLnKgNN5ykxJYLBgeIX3DuBIKovjUusf0g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pranay Samala , Chaitanya Kumar Borah , Uma Shankar , Suraj Kandpal , Tvrtko Ursulin Subject: [PATCH 7.0 291/332] drm/i915/color: Fix HDR pre-CSC LUT programming loop Date: Sun, 7 Jun 2026 12:01:00 +0200 Message-ID: <20260607095738.741059446@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260607095728.031258202@linuxfoundation.org> References: <20260607095728.031258202@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pranay Samala commit d196136a988051173f68f91de0b5a1bd32122dd7 upstream. 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: #v6.19 Fixes: 82caa1c8813f ("drm/i915/color: Program Pre-CSC registers") Signed-off-by: Pranay Samala Signed-off-by: Chaitanya Kumar Borah Reviewed-by: Uma Shankar Signed-off-by: Suraj Kandpal Link: https://patch.msgid.link/20260519075308.383877-1-pranay.samala@intel.com (cherry picked from commit f33862ec3e8849ad7c0a3dd46719083b13ade248) Signed-off-by: Tvrtko Ursulin Signed-off-by: Greg Kroah-Hartman --- 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); -- 2.54.0