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 X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A67DAC4338F for ; Thu, 19 Aug 2021 17:16:33 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 6B6286108B for ; Thu, 19 Aug 2021 17:16:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6B6286108B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 717DA6E9B8; Thu, 19 Aug 2021 17:16:31 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id E0BBB6E9B7; Thu, 19 Aug 2021 17:16:29 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10081"; a="196862939" X-IronPort-AV: E=Sophos;i="5.84,335,1620716400"; d="scan'208";a="196862939" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2021 10:16:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,335,1620716400"; d="scan'208";a="489780999" Received: from stinkbox.fi.intel.com (HELO stinkbox) ([10.237.72.171]) by fmsmga008.fm.intel.com with SMTP; 19 Aug 2021 10:16:26 -0700 Received: by stinkbox (sSMTP sendmail emulation); Thu, 19 Aug 2021 20:16:26 +0300 Date: Thu, 19 Aug 2021 20:16:26 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= To: Jani Nikula Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Manasi Navare Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Patchwork-Hint: comment Subject: Re: [Intel-gfx] [PATCH 2/4] drm/dp: use more of the extended receiver cap X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Fri, Aug 13, 2021 at 01:43:20PM +0300, Jani Nikula wrote: > Extend the use of extended receiver cap at 0x2200 to cover > MAIN_LINK_CHANNEL_CODING_CAP in 0x2206, in case an implementation hides > the DP 2.0 128b/132b channel encoding cap. > > Cc: Manasi Navare > Signed-off-by: Jani Nikula > --- > drivers/gpu/drm/drm_dp_helper.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c > index 9b2a2961fca8..9389f92cb944 100644 > --- a/drivers/gpu/drm/drm_dp_helper.c > +++ b/drivers/gpu/drm/drm_dp_helper.c > @@ -608,7 +608,7 @@ static u8 drm_dp_downstream_port_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) > static int drm_dp_read_extended_dpcd_caps(struct drm_dp_aux *aux, > u8 dpcd[DP_RECEIVER_CAP_SIZE]) > { > - u8 dpcd_ext[6]; > + u8 dpcd_ext[DP_MAIN_LINK_CHANNEL_CODING + 1]; Why are we even reading less of this than the normal receiver caps? > int ret; > > /* > -- > 2.20.1 -- Ville Syrjälä Intel