From patchwork Wed Feb 9 09:03:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Puranjay Mohan X-Patchwork-Id: 12740189 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 8C5A6C43219 for ; Wed, 9 Feb 2022 12:03:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232171AbiBIMDa (ORCPT ); Wed, 9 Feb 2022 07:03:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231490AbiBIMDK (ORCPT ); Wed, 9 Feb 2022 07:03:10 -0500 X-Greylist: delayed 2546 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Wed, 09 Feb 2022 03:34:53 PST Received: from lelv0143.ext.ti.com (lelv0143.ext.ti.com [198.47.23.248]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E188CDF28AC9; Wed, 9 Feb 2022 03:34:52 -0800 (PST) Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 21996EFf090046; Wed, 9 Feb 2022 03:06:14 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1644397574; bh=vZWnswFoW5qNOblJvZoycCjjkCTkGBkJNS2nZCj+Hwg=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=KbuttjlqOH5cn0/jKQqyDGySCCS6DrAfpKA8kK1fXDwwP+bNeE1gIxAmR36OcYoXE SzCJsCtWKrfqFSBSQjZjGokRcH/braWtJJlC264buHZUFv0b9pKqWcwd4eio7bawK5 7saZ2Fe0sZkmLR0P8F7mlpVLMDakXX44FQD3Sb4M= Received: from DFLE100.ent.ti.com (dfle100.ent.ti.com [10.64.6.21]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 21996EVk117791 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 9 Feb 2022 03:06:14 -0600 Received: from DFLE103.ent.ti.com (10.64.6.24) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Wed, 9 Feb 2022 03:06:14 -0600 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE103.ent.ti.com (10.64.6.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Wed, 9 Feb 2022 03:06:14 -0600 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 21996DSi118771; Wed, 9 Feb 2022 03:06:13 -0600 From: Puranjay Mohan To: , , , , , , , , CC: Puranjay Mohan Subject: [PATCH v4 2/2] remoteproc: wkup_m3: Set deny_sysfs_ops flag Date: Wed, 9 Feb 2022 14:33:42 +0530 Message-ID: <20220209090342.13220-3-p-mohan@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220209090342.13220-1-p-mohan@ti.com> References: <20220209090342.13220-1-p-mohan@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org From: Suman Anna The Wakeup M3 remote processor is controlled by the wkup_m3_ipc client driver, so set the newly introduced 'deny_sysfs_ops' flag to not allow any overriding of the remoteproc firmware or state from userspace. Signed-off-by: Suman Anna Signed-off-by: Puranjay Mohan --- drivers/remoteproc/wkup_m3_rproc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/remoteproc/wkup_m3_rproc.c b/drivers/remoteproc/wkup_m3_rproc.c index 484f7605823e..bbb84bb28af8 100644 --- a/drivers/remoteproc/wkup_m3_rproc.c +++ b/drivers/remoteproc/wkup_m3_rproc.c @@ -163,6 +163,7 @@ static int wkup_m3_rproc_probe(struct platform_device *pdev) } rproc->auto_boot = false; + rproc->deny_sysfs_ops = true; wkupm3 = rproc->priv; wkupm3->rproc = rproc;