From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 249D8C61DD4 for ; Thu, 27 Aug 2026 09:45:00 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6873010EF6F; Thu, 27 Aug 2026 09:44:47 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="GrLNtAOe"; dkim-atps=neutral Received: from mail-pj2-f6.google.com (mail-pj2-f6.google.com [74.125.227.134]) by gabe.freedesktop.org (Postfix) with ESMTPS id 88EFF10E373 for ; Thu, 27 Aug 2026 02:21:24 +0000 (UTC) Received: by mail-pj2-f6.google.com with SMTP id 98e67ed59e1d1-3964e7720afso976311a91.1 for ; Wed, 26 Aug 2026 19:21:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1787797284; x=1788402084; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=w5YaH8mokWPLQfhjUseDA3RHoFgBNedWh0XDxf4FNzc=; b=GrLNtAOeSBPz2p1srNvKuMXJQgMEM62iX/6uTKa4t+f02YbYFtBxGkU6vcav8232w6 aI3Kt+l+EHFCV7j5/cD9NjtR+rfO9dCTsn+21dhIcyKcDCPq+CH53vahonXsQkeuoJqB u/8ue5kk63oaeAq5OBTbrIVvROmnIuM7GzSsfw56WEpLQ1dWqRf6oImk1rqzvHpvSX0e tiGTnGqjTaSle8DIxNr+paB9X5Obpo66hU2atKDoY8pusPVB4ok1EzwJ5T2K6MZ0DKR5 CyN64WYq6ttsf+LABxIZBAuAgPlMnYIxMdj6wro1aW2QuG0T0AEGWfXPm2r914IZM+AJ jB4w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787797284; x=1788402084; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=w5YaH8mokWPLQfhjUseDA3RHoFgBNedWh0XDxf4FNzc=; b=K9mFS4V+vxSQcfrODk6dp227S5yDfcPZZ93BPZ5Cr2SX8qk+3SNzaLJw5zM+YU34gO 11Hzf3y3A0kws6IMhFkPZBc0UkuSsW1EF1pbFqUcJPtxj3/jT66zqouLzf7ypiMWjmm1 OiZZs0rOdfQUg1ERBsFT+2fJutb0K9gvETprXGjsFalMckq0RJlYconJELRm5G98Q7SJ TZlfbYzmQed+DAgkS7/oIsgRTW0PwGd4PylDtNcPTmPol1J5RxSkQytcI1LFdteumd3m gp3Q0ozhZr1+GA8iwpDN0QmdBRzxJPKPTtWkgfcOfarb+5Mdt0G3VZXHQ5olWy8HdESS bupg== X-Forwarded-Encrypted: i=1; AHgh+RpizPtiFpjnU/XXn97YaWu4q9HM09eWMLLTx7P/793jj5tYnAP1umgNcwimzk0FLl/HOqFmZuBYHk4=@lists.freedesktop.org X-Gm-Message-State: AFuF++la6Hb5Hbni8CqiR+Upvjly9rF1n/RRTDPHo+b3l/XpgmT/0lZV k1+/cCzA1JnXA0+WaLkN7cr+Eb30D5d0GCrExWRLQzIwkcfLaGOuXXmN X-Gm-Gg: AR+sD13sxs8tQXAhQijk6QA16bKF+df/EtoLLCOvto7YqrszXBCOul/HWnU1l0FGi4r 4QViYHWALD1gEzqbahqsP0zMxrH4TjynM7Gzk7RCxMTzGG9YjM3Vrbgp5vWtAMJIwGllPkLjtPa UPaeWfR56xsieoNmAXp1l5TH02H2OPtxO9Kk0hZr2RRC2OmSwFtqs4ocQrsD22Mqi1QlPCkbDi4 jZJVk+PnKnYMH2F0dPtBQIUlySzdHLwRD6tvZMweaPRa9IB+Op+Qm6e1nAFRs9TqBzyOc/K9LhP eYIakLpTceNyvuq76FCjEGMVn4uQPw9Rxi+T9A8KFQb7Y46Rz/QrsvED2eik+QeROkUroSQw22c wKlU58ZHZUu2RREknzuxcSmveipbhOPhRZ6rIg9IWQ4JcMv3WdVLYhnLjxTVBzu6UMOWhoiRhxZ bHx5WL8aPeY0p9GuHgo1fWrfGPqMxawYpXMvxpy15Ic0ppu/VaWtiN7xT5ViU1jysdd22+Jy2z+ iYroDm1CHQV53vBjyo1KMdL5A== X-Received: by 2002:a17:90b:390a:b0:396:5785:843 with SMTP id 98e67ed59e1d1-3966d203a94mr21084902a91.8.1787797284194; Wed, 26 Aug 2026 19:21:24 -0700 (PDT) Received: from DESKTOP-BDFNLNM.localdomain ([223.231.133.255]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3283d60c291sm20850538eec.6.2026.08.26.19.21.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Aug 2026 19:21:23 -0700 (PDT) From: tarund18303@gmail.com To: jani.nikula@linux.intel.com Cc: rodrigo.vivi@intel.com, joonas.lahtinen@linux.intel.com, tursulin@ursulin.net, airlied@gmail.com, simona@ffwll.ch, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, tarun-tarun143 Subject: [PATCH] drm/i915/dp_link_caps: Validate max link rate Date: Thu, 27 Aug 2026 02:20:34 +0000 Message-ID: <20260827022035.3442-1-tarund18303@gmail.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Thu, 27 Aug 2026 09:44:45 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: tarun-tarun143 Validate the maximum link rate against the source-supported rates before using the maximum link limits to calculate allowed configurations. This prevents an unsupported link rate from being accepted as a maximum link limit. Signed-off-by: tarun-tarun143 --- drivers/gpu/drm/i915/display/intel_dp_link_caps.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_caps.c b/drivers/gpu/drm/i915/display/intel_dp_link_caps.c index 7b6cc6055da8..0934488153bb 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_caps.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_caps.c @@ -710,7 +710,10 @@ static bool max_link_limits_valid(struct intel_dp_link_caps *link_caps, !is_power_of_2(max_link_limits->lane_count)) return false; - /* TODO: Validate max_link_limits->rate against the source supported rates. */ + if (intel_dp_rate_index(link_caps->dp->source_rates, + link_caps->dp->num_source_rates, + max_link_limits->rate) < 0) + return false; intel_dp_link_caps_get_forced_params(link_caps, &forced_params); allowed_configs = calc_allowed_config_filter(link_caps, link_caps->enabled_configs, base-commit: 73e3f0710014fe6d4ed98cfc02292f6121db7558 -- 2.43.0