From patchwork Sun Jan 17 00:23:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 12026739 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 422CAC433DB for ; Mon, 18 Jan 2021 08:25:44 +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 EAB372253A for ; Mon, 18 Jan 2021 08:25:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EAB372253A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B6D6D6E17C; Mon, 18 Jan 2021 08:25:31 +0000 (UTC) Received: from mail-lj1-x22e.google.com (mail-lj1-x22e.google.com [IPv6:2a00:1450:4864:20::22e]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9D71689B49 for ; Sun, 17 Jan 2021 00:24:01 +0000 (UTC) Received: by mail-lj1-x22e.google.com with SMTP id m10so14469660lji.1 for ; Sat, 16 Jan 2021 16:24:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pngCiC8UVrFmDGTkFK9zXDEQWbuDnES5IXJTMMZSYC4=; b=y7wUaE5uSs9/X1CgZ0TgeV+nYHROi8wXtaSQXaSFrr/YXaVn4ZkDx/z/CcIGc4aFhj yfVNJ9hRPzVVlnFeOKfOUWdYMiLz9LzYLYEAKKQ3zrd8q06qsc6M8pW99JyJeoZyuv7Q cjRJu7FsGE6ztp3WsT7fUi5dcaFxEtXEe/hj+l3kUoDAjmBD9G9G0bLlQqmUBSXOEFov wV+0IosGaHEy4YLwDUqbPWIT59zLJV2DNI6I8P7k5nqwjSfydOAgydT5n54AVIRR96sV zvNFcWy7ivZi9VH4WUnwO+emzrfy6nZbdocy20g3qHhDt2XzuG8HkyFQSWUXSDwhG71L rk7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pngCiC8UVrFmDGTkFK9zXDEQWbuDnES5IXJTMMZSYC4=; b=FaNesa+JsQ2zE8zliKgnD0EvWeKSeGamNLeq8KmYMYsoy2/5ZjWSP2IfmQSVnWVDM0 9057glNUXTm8Qf2uC79bIZTTDPEGEQYkCalaaBltKdzpnCyqAV/Q8f5AmtvCY2DZ+9oH r7dC+Bh83aMQO65GEdZvZ3S15N6rZfpYKhwFHGt2YcWfj71EdM4xrPokX28gzl7e0pqM RVh4Ly4PNKHDpfdozi274GajJlbzMZ0afXp404tLP+H4Rk0A3x4FVawTaUZqWYtDPUxt R6wwxlqg8LAjr9efCoVuvXVNZ2Nn5htlNrn48pSc8CcW2y4Mq6Vj/5vbMBotvuvOHAnN hylA== X-Gm-Message-State: AOAM531Y3DFrIS7YomxoDauZU0qsCbnkdU4h/OmfFIjaUT3OcjjRwo9Z lywqnhQ3o7pOHElU1t8GB5lyswxtT+ua/8Of X-Google-Smtp-Source: ABdhPJyLeADw2VKPRMAvtHVWtCOxRs38E8QehKF4XvsxxSU6wP3pWJnlkTEPqdMsIhPMrt4Htm5nxQ== X-Received: by 2002:a2e:3c01:: with SMTP id j1mr7969902lja.258.1610843039706; Sat, 16 Jan 2021 16:23:59 -0800 (PST) Received: from eriador.lumag.spb.ru ([94.25.228.101]) by smtp.gmail.com with ESMTPSA id q1sm962468lfu.48.2021.01.16.16.23.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 Jan 2021 16:23:59 -0800 (PST) From: Dmitry Baryshkov To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v3 2/3] drm/bridge/lontium-lt9611uxc: fix get_edid return code Date: Sun, 17 Jan 2021 03:23:54 +0300 Message-Id: <20210117002355.435860-3-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210117002355.435860-1-dmitry.baryshkov@linaro.org> References: <20210117002355.435860-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 X-Mailman-Approved-At: Mon, 18 Jan 2021 08:25:29 +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: , Cc: Jernej Skrabec , Jonas Karlman , David Airlie , Neil Armstrong , Andrzej Hajda , Vinod Koul , Laurent Pinchart , Manivannan Sadhasivam , Sam Ravnborg Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Return NULL pointer from get_edid() callback rather than ERR_PTR() pointer, as DRM code does NULL checks rather than IS_ERR(). Also while we are at it, return NULL if getting EDID timed out. Signed-off-by: Dmitry Baryshkov Fixes: 0cbbd5b1a012 ("drm: bridge: add support for lontium LT9611UXC bridge") --- drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c index a59e811f1705..b708700e182d 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c @@ -505,7 +505,10 @@ static struct edid *lt9611uxc_bridge_get_edid(struct drm_bridge *bridge, ret = lt9611uxc_wait_for_edid(lt9611uxc); if (ret < 0) { dev_err(lt9611uxc->dev, "wait for EDID failed: %d\n", ret); - return ERR_PTR(ret); + return NULL; + } else if (ret == 0) { + dev_err(lt9611uxc->dev, "wait for EDID timeout\n"); + return NULL; } return drm_do_get_edid(connector, lt9611uxc_get_edid_block, lt9611uxc);