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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 39B2BC433F5 for ; Mon, 25 Apr 2022 09:37:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235800AbiDYJkn (ORCPT ); Mon, 25 Apr 2022 05:40:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42868 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240305AbiDYJkW (ORCPT ); Mon, 25 Apr 2022 05:40:22 -0400 Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E4791A3AC for ; Mon, 25 Apr 2022 02:36:40 -0700 (PDT) Received: by mail-ej1-x633.google.com with SMTP id bv19so28450881ejb.6 for ; Mon, 25 Apr 2022 02:36:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=IICvgo8nR6+CwR6K2NQjDjUzv2CjDXLn1hL/X5+bgjQ=; b=Uy5cCk6XSulIBATC6l+wqR5QMl5K8c54iV/JBxtHhMUBRb3Pql6NyP6dKW8Njpm5yP AxZD7MndZL6wfSDAkoJgmX392nJcdFSx+jJNWNLGPHpfX1Nti6LHJppMJ8EVIsMb/qJw j9lSO4UnuvmbphBmiAqiQhs5vBGKpTafs5N7c= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=IICvgo8nR6+CwR6K2NQjDjUzv2CjDXLn1hL/X5+bgjQ=; b=7Hmfg165TKhZ7zx1WE4yC5FU8tl6uJTRcmJ6Rv7cPVqa0MR6qbKSNPXEx8jIokxb7s 0zEDOGfcRV4W+RJ2mRl4eP3uauKPA2bZgikCn+Po9d4+Ec4JNNzyYPd5b7dopF7FQCRJ m5mAUR9bu0c1y9uhLDns9jfR1mGLwTUcD/jzrZr/y/Fy/haMLcTS+A4qED697PTGlyxo 3ecUVyXPQMhJknmT5Lk06p03CwgYqiugXVPxNbxXXdG6lxbAwpOORFLKpYyLXju8XdPo xFrZv+EPoAFWJObHv3Ae/HMrhxEVCTvaT2qb5bK5ZVuNKRcpcL9HUMlntEQIpXla/WeE gOrA== X-Gm-Message-State: AOAM533x9xYOlux9/QT3IPFrHRHA9wzVpe4wLzgyQx7WUheiupjmr9+3 fgd+qz/Bl2fb28IIkGtqYZbQ9g== X-Google-Smtp-Source: ABdhPJyaD/ooPmJsbStGHDHPN1o9gZTUObU3z3+xu/Oct5/971yUhlU98YG6Jts0+eb6E24Dz+3Hxw== X-Received: by 2002:a17:906:5cb:b0:6cf:954:d84d with SMTP id t11-20020a17090605cb00b006cf0954d84dmr15997650ejt.560.1650879397862; Mon, 25 Apr 2022 02:36:37 -0700 (PDT) Received: from gmail.com ([100.104.168.197]) by smtp.gmail.com with ESMTPSA id y19-20020a056402359300b00423e51be1cesm4311100edc.64.2022.04.25.02.36.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Apr 2022 02:36:37 -0700 (PDT) Date: Mon, 25 Apr 2022 11:36:20 +0200 From: Ricardo Ribalda To: Laurent Pinchart Cc: linux-media@vger.kernel.org, Dafna Hirschfeld , Heiko Stuebner , Paul Elder , Tomasz Figa , linux-rockchip@lists.infradead.org Subject: Re: [PATCH v4 03/21] media: rkisp1: isp: Fix and simplify (un)registration Message-ID: References: <20220421234240.1694-1-laurent.pinchart@ideasonboard.com> <20220421234240.1694-4-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220421234240.1694-4-laurent.pinchart@ideasonboard.com> Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Laurent Pinchart wrote: > The rkisp1_isp_register() and rkisp1_isp_unregister() functions don't > destroy the mutex (in the error path for the former). Fix this, simplify > error handling at registration time as media_entity_cleanup() can be > called on an uninitialized entity, and make rkisp1_isp_unregister() and > safe to be called on an unregistered isp subdev to prepare for > simplification of error handling at probe time. > > Signed-off-by: Laurent Pinchart Reviewed-by: Ricardo Ribalda > --- > Changes since v3: > > - Use isp->sd.v4l2_dev instead of isp->sd.flags for registration test > --- > .../platform/rockchip/rkisp1/rkisp1-isp.c | 20 ++++++++++++------- > 1 file changed, 13 insertions(+), 7 deletions(-) > > diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c > index 2a35bf24e54e..4f7b2157b8cc 100644 > --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c > +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c > @@ -1090,29 +1090,35 @@ int rkisp1_isp_register(struct rkisp1_device *rkisp1) > mutex_init(&isp->ops_lock); > ret = media_entity_pads_init(&sd->entity, RKISP1_ISP_PAD_MAX, pads); > if (ret) > - return ret; > + goto error; > > ret = v4l2_device_register_subdev(&rkisp1->v4l2_dev, sd); > if (ret) { > dev_err(rkisp1->dev, "Failed to register isp subdev\n"); > - goto err_cleanup_media_entity; > + goto error; > } > > rkisp1_isp_init_config(sd, &state); > + > return 0; > > -err_cleanup_media_entity: > +error: > media_entity_cleanup(&sd->entity); > - > + mutex_destroy(&isp->ops_lock); > + isp->sd.v4l2_dev = NULL; > return ret; > } > > void rkisp1_isp_unregister(struct rkisp1_device *rkisp1) > { > - struct v4l2_subdev *sd = &rkisp1->isp.sd; > + struct rkisp1_isp *isp = &rkisp1->isp; > > - v4l2_device_unregister_subdev(sd); > - media_entity_cleanup(&sd->entity); > + if (!isp->sd.v4l2_dev) > + return; > + > + v4l2_device_unregister_subdev(&isp->sd); > + media_entity_cleanup(&isp->sd.entity); > + mutex_destroy(&isp->ops_lock); > } > > /* ---------------------------------------------------------------------------- > -- > Regards, > > Laurent Pinchart > >