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=-16.5 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 CCF6FC43461 for ; Fri, 23 Apr 2021 16:59:49 +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 903856115C for ; Fri, 23 Apr 2021 16:59:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 903856115C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.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 AB0626E161; Fri, 23 Apr 2021 16:59:46 +0000 (UTC) Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by gabe.freedesktop.org (Postfix) with ESMTPS id E64B06E161 for ; Fri, 23 Apr 2021 16:59:45 +0000 (UTC) Received: by mail-pj1-x102c.google.com with SMTP id lt13so14570056pjb.1 for ; Fri, 23 Apr 2021 09:59:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pdcpo4UqRlWs4ocPfX4snuIEGMWz2iUneYKWicWu5Ps=; b=UiXErXemW2Z1PCdM9rdxduLgZdKkZp2cJ5UTIOMhKS/ZBUmVIriOjKreGnp1xfCQs4 vE7OR5LEr7+0PS3EtSxsnORGB1XnMRLhtR/hwozuWTiDGTDzBVc+Z7heZxAXehNhWWu8 mitoDjp0bgrk9G2vLOxRD91XRxARy41wepVMg= 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=pdcpo4UqRlWs4ocPfX4snuIEGMWz2iUneYKWicWu5Ps=; b=d+VZtfCFm/xO8ni4dQYppgH7Yzcz1ucCVlQCvt09D6VFNjnuMQejZKDshbBFWxC6vR 7/VChGhAIJwU42ElS2jvTVdmfGnvtGi0N2h5daW2hq1z6iqBatPvMbNxtKUXxJiTafL1 sFPorZTN7GfxiVywThtuTfLTVC/gY25ttwtSz9+rLUR/y5TzQ941768EbLajX/SEFuY4 pSxTD9q2pnD8t7gb+r3vupbRtNKVw/mZdUFn8XebFfPLUG06eF0TEfTtGIV72fwYfMzl IrwXW4WEtpACdGJjZWK5ne1ByVrLsGj3hInsb5MMV3HdDF22Sepzut3RSaSClX2t/8Df WBbA== X-Gm-Message-State: AOAM5324fChobb28gcVpIhJQmeYX8UfldSTyr6y57aMQSdHc9ej73ZQb +K0KCL403OtWRkhUqw0iGPTjZw== X-Google-Smtp-Source: ABdhPJyAWKVmxvEi9reu/EoUqAW7KcB819hFWrr09EJVcKqxEtEvh/AuypvfPYDZ1yx6Fv3YxVpHEQ== X-Received: by 2002:a17:90b:344d:: with SMTP id lj13mr6661098pjb.44.1619197185610; Fri, 23 Apr 2021 09:59:45 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:201:6d86:663d:71f8:6a11]) by smtp.gmail.com with ESMTPSA id v8sm5123607pfm.128.2021.04.23.09.59.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Apr 2021 09:59:45 -0700 (PDT) From: Douglas Anderson To: Andrzej Hajda , Neil Armstrong , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Sam Ravnborg , Wolfram Sang Subject: [PATCH v5 05/20] drm/bridge: ti-sn65dsi86: Clean debugfs code Date: Fri, 23 Apr 2021 09:58:51 -0700 Message-Id: <20210423095743.v5.5.I5fe072753290c6a77eda736ebd5778e17b7cb0fb@changeid> X-Mailer: git-send-email 2.31.1.498.g6c1eba8ee3d-goog In-Reply-To: <20210423165906.2504169-1-dianders@chromium.org> References: <20210423165906.2504169-1-dianders@chromium.org> MIME-Version: 1.0 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: robdclark@chromium.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, David Airlie , linux-arm-msm@vger.kernel.org, Douglas Anderson , Steev Klimaszewski , Stephen Boyd , Stanislav Lisovskiy , linux-i2c@vger.kernel.org, Bjorn Andersson , Robert Foss Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Let's cleanup the debugfs code to: - Check for errors. - Use devm to manage freeing, which also means we don't need to store a pointer in our structure. Signed-off-by: Douglas Anderson --- Bjorn: I left off your tag on this patch since I made changes compared to v4. Can you re-add if it still looks OK? This is now ordered _after_ the pm_runtime patch so I believe the ordering problem you pointed out should be fixed as well? Changes in v5: - Don't print debugfs creation errors. - Handle NULL from debugfs_create_dir() which is documented possible. drivers/gpu/drm/bridge/ti-sn65dsi86.c | 33 +++++++++++++++++---------- 1 file changed, 21 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 44d8395505f0..8aa36074aab9 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -118,7 +118,6 @@ * @aux: Our aux channel. * @bridge: Our bridge. * @connector: Our connector. - * @debugfs: Used for managing our debugfs. * @host_node: Remote DSI node. * @dsi: Our MIPI DSI source. * @edid: Detected EDID of eDP panel. @@ -146,7 +145,6 @@ struct ti_sn65dsi86 { struct drm_dp_aux aux; struct drm_bridge bridge; struct drm_connector connector; - struct dentry *debugfs; struct edid *edid; struct device_node *host_node; struct mipi_dsi_device *dsi; @@ -245,18 +243,31 @@ static int status_show(struct seq_file *s, void *data) DEFINE_SHOW_ATTRIBUTE(status); -static void ti_sn65dsi86_debugfs_init(struct ti_sn65dsi86 *pdata) +static void ti_sn65dsi86_debugfs_remove(void *data) { - pdata->debugfs = debugfs_create_dir(dev_name(pdata->dev), NULL); - - debugfs_create_file("status", 0600, pdata->debugfs, pdata, - &status_fops); + debugfs_remove_recursive(data); } -static void ti_sn65dsi86_debugfs_remove(struct ti_sn65dsi86 *pdata) +static void ti_sn65dsi86_debugfs_init(struct ti_sn65dsi86 *pdata) { - debugfs_remove_recursive(pdata->debugfs); - pdata->debugfs = NULL; + struct device *dev = pdata->dev; + struct dentry *debugfs; + int ret; + + debugfs = debugfs_create_dir(dev_name(dev), NULL); + + /* + * We might get an error back if debugfs wasn't enabled in the kernel + * so let's just silently return upon failure. + */ + if (IS_ERR_OR_NULL(debugfs)) + return; + + ret = devm_add_action_or_reset(dev, ti_sn65dsi86_debugfs_remove, debugfs); + if (ret) + return; + + debugfs_create_file("status", 0600, debugfs, pdata, &status_fops); } /* Connector funcs */ @@ -1316,8 +1327,6 @@ static int ti_sn65dsi86_remove(struct i2c_client *client) kfree(pdata->edid); - ti_sn65dsi86_debugfs_remove(pdata); - drm_bridge_remove(&pdata->bridge); of_node_put(pdata->host_node); -- 2.31.1.498.g6c1eba8ee3d-goog _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel