From patchwork Fri Mar 4 17:19:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 12769504 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DF2B9C433F5 for ; Fri, 4 Mar 2022 17:23:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=tjZGA6YwWRq0o9dCFpIEgpo4k23OF8m3L5knYbDQSPk=; b=QtxahGmYZCgzR2 7o3uJWzx5Y0M1eszjHbUUMt2BlMxrzwzRJTE9o48Gatth9EFa99dAJAGlO5YInCZArm/s6dJE3Wz3 xOoXi7PsCZujP9/h2cUye65+aL4p8LRIQbCfkljYH42U/+bGJLm8gUMQNkdZwyH5+p/jk9R8xEZFk UsaSqyU8ArduwMmqkJ8UI4IWh8/3iSr7uV99Zow+oa+0LP8rGGzQ+eGn20HkKfWmMat087XVqxXEC gEK84EglMAEa3pSazyzyGwXmQT2KEKcSqBkpIWifLF7Orm7HMDWEDrUCKNcbAmimDdlzmxgnBCdiw Ye8rKWLGOsJwAlqYSCUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nQBeG-00BHz7-Jd; Fri, 04 Mar 2022 17:23:24 +0000 Received: from perceval.ideasonboard.com ([213.167.242.64]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nQBal-00BFdx-Tk for linux-rockchip@lists.infradead.org; Fri, 04 Mar 2022 17:19:49 +0000 Received: from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id EE03618C4; Fri, 4 Mar 2022 18:19:43 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1646414384; bh=9ROprn3HxbxGrOVm4ab+C91AqWJca1OqXYMJ0PqX3Fo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uzrVr5S4raasn0Ex+SHEUqTyHw+kCKrGSzxGw8lkroRRkWmfFudcMLRaXKZ1hF/qD /zYW1IC2bEkW9zmgwgOKPV5aXqRK87jn9OyHuAbLPPVX4X5dguvDBlAXSFXcMl9aak xAoTa9oPNmedeIeuvUKzmCkmZfS0a1ImVXAQdWxA= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dafna Hirschfeld , Heiko Stuebner , Paul Elder , Tomasz Figa , linux-rockchip@lists.infradead.org Subject: [PATCH v2 05/17] media: rkisp1: params: Fix and simplify (un)registration Date: Fri, 4 Mar 2022 19:19:13 +0200 Message-Id: <20220304171925.1592-6-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220304171925.1592-1-laurent.pinchart@ideasonboard.com> References: <20220304171925.1592-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220304_091948_135320_194A53E4 X-CRM114-Status: GOOD ( 11.28 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The rkisp1_params_register() and rkisp1_params_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_params_unregister() safe to be called on an unregistered params node to prepare for simplification of error handling at probe time. Signed-off-by: Laurent Pinchart --- .../platform/rockchip/rkisp1/rkisp1-params.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c index 8f62f09e635f..d41823c861ca 100644 --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c @@ -1844,16 +1844,21 @@ int rkisp1_params_register(struct rkisp1_device *rkisp1) node->pad.flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_pads_init(&vdev->entity, 1, &node->pad); if (ret) - return ret; + goto error; + ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); if (ret) { dev_err(rkisp1->dev, "failed to register %s, ret=%d\n", vdev->name, ret); - goto err_cleanup_media_entity; + goto error; } + return 0; -err_cleanup_media_entity: + +error: media_entity_cleanup(&vdev->entity); + mutex_destroy(&node->vlock); + params->rkisp1 = NULL; return ret; } @@ -1863,6 +1868,10 @@ void rkisp1_params_unregister(struct rkisp1_device *rkisp1) struct rkisp1_vdev_node *node = ¶ms->vnode; struct video_device *vdev = &node->vdev; + if (!params->rkisp1) + return; + vb2_video_unregister_device(vdev); media_entity_cleanup(&vdev->entity); + mutex_destroy(&node->vlock); }