From nobody Wed Apr 2 23:12:56 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E4D6C54E76 for ; Tue, 17 Jan 2023 17:14:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234537AbjAQROz (ORCPT ); Tue, 17 Jan 2023 12:14:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235136AbjAQRO1 (ORCPT ); Tue, 17 Jan 2023 12:14:27 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66C654C0E4 for ; Tue, 17 Jan 2023 09:12:50 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 13A7AB8164B for ; Tue, 17 Jan 2023 17:12:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 89186C433D2; Tue, 17 Jan 2023 17:12:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1673975567; bh=WwkZdJTRH/e6oDjQt1JBj5r7Hxk3Sps4Rt8KnDt4/u0=; h=From:To:Cc:Subject:Date:From; b=ZNGm4dQXyPpdlm7+X9Q4CvkWy0n/zRxxC7Ir3C+TUbW7gC1qxMaaS5DvieEd5lipB enf5LpmFk7sumKBslDpDA4iwMbwtkaco2vtLfWHLz3agHqyEFmDjTuJvj0Hqv+zKSH xKKUwC0JlzGg23g4T8+MHo6zp64b1EiBKmdlrQG0n5hijI21iRv5HUdykcWJz24et2 SW/Lk95wWovkMoSGbJ5uySheXx62h3p13bsj02eTXe08CERf4E7LKK8dhRZGcGyr2n 3dKH6wXinGH1vHVrOkN39F4fDBMA8ZoaeOBIb5POjI4UKDLtvWiRuAT28+zz6P5aUF xKt199peEHU4A== From: Arnd Bergmann To: =?UTF-8?q?Michel=20D=C3=A4nzer?= , Harry Wentland , Leo Li , Rodrigo Siqueira Cc: Arnd Bergmann , Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , "Pan, Xinhui" , David Airlie , Daniel Vetter , Wenjing Liu , George Shen , Jun Lei , Jimmy Kizito , Michael Strauss , Lewis Huang , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] [v2] drm/amd/display: fix dp_retrieve_lttpr_cap return code Date: Tue, 17 Jan 2023 18:12:24 +0100 Message-Id: <20230117171239.2714855-1-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Arnd Bergmann The dp_retrieve_lttpr_cap() return type changed from 'bool' to 'enum dc_status', so now the early 'return' uses the wrong type: drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_dp.c: In function 'dp= _retrieve_lttpr_cap': drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_dp.c:5075:24: error: = implicit conversion from 'enum ' to 'enum dc_status' [-Werror=3D= enum-conversion] 5075 | return false; | ^~~~~ Convert it to return 'DC_ERROR_UNEXPECTED', which was apparently set as a default return code here but never used. Fixes: b473bd5fc333 ("drm/amd/display: refine wake up aux in retrieve link = caps") Signed-off-by: Arnd Bergmann --- v2 changes: - use DC_ERROR_UNEXPECTED instead of DC_OK - remove bogus initializers --- drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu= /drm/amd/display/dc/core/dc_link_dp.c index 9edfcdf3db3b..cf512362b4f1 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -5088,14 +5088,14 @@ static bool dpcd_read_sink_ext_caps(struct dc_link = *link) enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link) { uint8_t lttpr_dpcd_data[8]; - enum dc_status status =3D DC_ERROR_UNEXPECTED; - bool is_lttpr_present =3D false; + enum dc_status status; + bool is_lttpr_present; =20 /* Logic to determine LTTPR support*/ bool vbios_lttpr_interop =3D link->dc->caps.vbios_lttpr_aware; =20 if (!vbios_lttpr_interop || !link->dc->caps.extended_aux_timeout_support) - return false; + return DC_ERROR_UNEXPECTED; =20 /* By reading LTTPR capability, RX assumes that we will enable * LTTPR extended aux timeout if LTTPR is present. --=20 2.39.0