From patchwork Thu Jan 21 23:33:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 12038685 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 D4F87C433E0 for ; Fri, 22 Jan 2021 08:46:44 +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 93FE9235F9 for ; Fri, 22 Jan 2021 08:46:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 93FE9235F9 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 4CE626E9EC; Fri, 22 Jan 2021 08:46:03 +0000 (UTC) Received: from mail-lf1-x12d.google.com (mail-lf1-x12d.google.com [IPv6:2a00:1450:4864:20::12d]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6D3166E97A for ; Thu, 21 Jan 2021 23:33:12 +0000 (UTC) Received: by mail-lf1-x12d.google.com with SMTP id m22so5021141lfg.5 for ; Thu, 21 Jan 2021 15:33:12 -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=LXLBko8Cp1/+g8qjMNN3MI6diNB1wKaGBp6QZagrUvw=; b=H6plmw40MZ+6SjPcYq1mPJlnbzickRzJ8SRP54NDX47VY7L8rNmE3rpyVZsiOtXeKi z8mVBmZKjk3FRQqTig0hlWgLXB+S4m9KwqcsBQFHlecYLl/fzpMOt5hd5+uJCkGUzN28 NJjT2CRKFPXHy7KeJxw1z6m9Bw6kaUnSevl/j80O2LY78QPrVz4KmfcX0ITxZ9753THh UoY5p4VENRuytKHWiXDJE5+73P7l5GR+DwttXHxCxQW1dc4oqsKs0dZ0bb/ElL/NoHFT LaCKSPE2HphOcd00RiIwmP4YelSr5zNzSB16Ar7VilBQSBw+640Mchk4kTsD9qNSYdTn 3lkw== 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=LXLBko8Cp1/+g8qjMNN3MI6diNB1wKaGBp6QZagrUvw=; b=XJsTJw8y4wn9qRBPNmj60ESDFdypB8DUfy4Y+oQvba15gF27Hn4+KZj/AB8bKhIkj0 Kh9DVZEdh1q/8Nu7bZ+brzTjXeVP9joXMY2fj6sOgIQR1OkZKHW77Ds7RVhnZ2kxCrGh 6GKleKb7cnVfcoD/flpTZdJKN37XbcVsAJ0RU2HI2nPK+vWJ0fT2SGz9E4E0FLMVo/1E VrOVvg2JFkKM4EI8b1T4VUynatBXDszMm+EETqEe7SY4WVuKqBSsvRyMNgClVBYsmSBN lq+j1zT/lndh405sbSaApviISv/WeZ1mGK2uhVfbqeBQq2G7fs55afzQE1VeOHzvU6eu v+Lw== X-Gm-Message-State: AOAM530JYgumK797Ljv/MqSdDG7fPfUjtvuwdzwiWY892gITcMPwmywL 3wvu+AuFpysSZKI0TG76yBR8PPmyWpCy6y1u X-Google-Smtp-Source: ABdhPJxU9TZ69d8kwFQwT1jPDTrC4CkWHg4Ij8Kb0Ur9THl9pf4CK7mzNN9n3FnXmF5jEMhDfzUQVA== X-Received: by 2002:a05:6512:612:: with SMTP id b18mr864962lfe.598.1611271990559; Thu, 21 Jan 2021 15:33:10 -0800 (PST) Received: from eriador.lan ([188.162.64.145]) by smtp.gmail.com with ESMTPSA id l28sm726969ljb.42.2021.01.21.15.33.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Jan 2021 15:33:09 -0800 (PST) From: Dmitry Baryshkov To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v4 2/3] drm/bridge/lontium-lt9611uxc: fix get_edid return code Date: Fri, 22 Jan 2021 02:33:02 +0300 Message-Id: <20210121233303.1221784-3-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210121233303.1221784-1-dmitry.baryshkov@linaro.org> References: <20210121233303.1221784-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 X-Mailman-Approved-At: Fri, 22 Jan 2021 08:45:43 +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 , Bjorn Andersson , 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") Reviewed-by: Bjorn Andersson Reviewed-by: Andrzej Hajda --- 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);