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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 C4B98C433E0 for ; Tue, 16 Jun 2020 15:59:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9D29C20882 for ; Tue, 16 Jun 2020 15:59:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592323157; bh=jPK7r6XngKm+9s3k8RkKbP+GQdmiG3cPPA1jpmH2QwM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=X7lru0m8d+zwAFW5tRPhx0BpRvCEge/riAmPMvoxtlgUV5vDhqkMbEz3eSt0+H0EB WjXLxpdgVQZUVQnsKWY6Zg0cDy7Uz8YhthkgP+MmQv6kKNBMqLlBqMtRA7n5NBtsUV htkYXNZwoiYk7fKpSBJGKC2j5DVrv/WdpsXLFw34= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732188AbgFPP7Q (ORCPT ); Tue, 16 Jun 2020 11:59:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:52378 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731326AbgFPPxs (ORCPT ); Tue, 16 Jun 2020 11:53:48 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 10008208D5; Tue, 16 Jun 2020 15:53:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592322828; bh=jPK7r6XngKm+9s3k8RkKbP+GQdmiG3cPPA1jpmH2QwM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ReFib/ryGVGrpzGnwdecTVP4vx0ei3P/IUAfywBFw6/QGknwHq8WwtR4HOOgkpjtV sitXxewYR0TM8sqAp/vEZ7+fFZhvOQSjj99Qqpcg3hvbcCyMc57q6tdyuM0kYfd4l8 qxdZOXaBH123ZN88yZ/vq2GsiPYVTemaCtg/sUQ4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Suman Anna , Mathieu Poirier , Arnaud Pouliquen , Bjorn Andersson Subject: [PATCH 5.6 119/161] remoteproc: Fix and restore the parenting hierarchy for vdev Date: Tue, 16 Jun 2020 17:35:09 +0200 Message-Id: <20200616153112.025804793@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200616153106.402291280@linuxfoundation.org> References: <20200616153106.402291280@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Suman Anna commit c774ad010873bb89dcc0cdcb1e96aef6664d8caf upstream. The commit 086d08725d34 ("remoteproc: create vdev subdevice with specific dma memory pool") has introduced a new vdev subdevice for each vdev declared in the firmware resource table and made it as the parent for the created virtio rpmsg devices instead of the previous remoteproc device. This changed the overall parenting hierarchy for the rpmsg devices, which were children of virtio devices, and does not allow the corresponding rpmsg drivers to retrieve the parent rproc device through the rproc_get_by_child() API. Fix this by restoring the remoteproc device as the parent. The new vdev subdevice can continue to inherit the DMA attributes from the remoteproc's parent device (actual platform device). Cc: stable@vger.kernel.org Fixes: 086d08725d34 ("remoteproc: create vdev subdevice with specific dma memory pool") Signed-off-by: Suman Anna Reviewed-by: Mathieu Poirier Acked-by: Arnaud Pouliquen Link: https://lore.kernel.org/r/20200420160600.10467-3-s-anna@ti.com Signed-off-by: Bjorn Andersson Signed-off-by: Greg Kroah-Hartman --- drivers/remoteproc/remoteproc_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -510,7 +510,7 @@ static int rproc_handle_vdev(struct rpro /* Initialise vdev subdevice */ snprintf(name, sizeof(name), "vdev%dbuffer", rvdev->index); - rvdev->dev.parent = rproc->dev.parent; + rvdev->dev.parent = &rproc->dev; rvdev->dev.dma_pfn_offset = rproc->dev.parent->dma_pfn_offset; rvdev->dev.release = rproc_rvdev_release; dev_set_name(&rvdev->dev, "%s#%s", dev_name(rvdev->dev.parent), name);