From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3118118-1523472489-5-327424155089010788 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, MAILING_LIST_MULTI -1, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=fm2; t= 1523472489; b=NnNEi7XsEkIPctDiXprn3XwOuLmlSA2rFdzd128MynsSMrfgSc pxA7Q2XwVAv9dH47lFv8IclCsbZjRJWR0Mk2S3TvPi7dvfqK4Y+FLqFjKzfZRF7g KiSpGcvlp+XCEeWvsLUhVvdNtBuoICjvxSH+1V7BGNKPxWijn3lLnpORc1jbWbEH C/RmQM9ol+G520t92PWN2X+uqCsNhIaeuOLOcb7+unchbneDRK0vNhAFFhXRB+35 8/w5EuH9n5xzGdIFYmEnHDyBt4WoPXEc8HoJfyLqkXE4AmvvHkl+0euEzdHwwFBM rCKcChKDdMcebYAT96siq+G/popvwnm5kgqw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=fm2; t=1523472489; bh=4nWYR2umpi82ycD6M07cjEpYC5MDMA Srh9Skq94l9/w=; b=TUSb2GK0CGXVIAtnEzzcemQJhiGKo954nah/kyeFqcz2lc kW62/rXB6qMXJBGIng+ySCVCnvDf8Gkz9qbpGYoyWcBfmZ1F1JxuaxkpN6B6pvAz WNuPcYMExDVXv+tf9QanydZ6yB0AKh390VaRIeU+p+97wNBCYPqpGeLwwJHjDI76 w2Lom3bIGTBDzShnzVVlqweIXdxpxMbNKTQ+0FRWdE+tnliyJJAYRJYVqRWtYQ6L lNahlP++pb2Hz5g9IvLSfDAKALsDqI2UVpjjf5dqKDz5FwcoC1ACRKq1PkML/rmm eyw8JVpoYqTGISIYgipNtA9MdUQYuDBM5Eo1XVfw== ARC-Authentication-Results: i=1; mx3.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx3.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfP1G+qN7KaW7VpPlxx/WdzzJPrkIYfpYuyPl7ihTRy4aL+gdtOK01Xdx5t5bc/2h2eAluaomYT1pEFru8BYFx2cGXCsnZc8aF1u1H/VM3YZFx/ADPkVn zFE7ehq3DyJnfCjItG614Z/UPl6/L0+b5hxY9omOB9icaUZGydwYh/1ZBxM3h5+GSWAuYMQ3/z4krRjV4JFZGyWIhcWEyBa41Ql7WRC9/Vp55IR8JCgL1q0z X-CM-Analysis: v=2.3 cv=Tq3Iegfh c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=IkcTkHD0fZMA:10 a=Kd1tUaAdevIA:10 a=sozttTNsAAAA:8 a=yMhMjlubAAAA:8 a=ag1SF4gXAAAA:8 a=r7hTFzgnQUyMEkfOMgEA:9 a=QEXdDO2ut3YA:10 a=aeg5Gbbo78KNqacMgKqU:22 a=Yupwre4RP9_Eg_Bd0iYG:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756049AbeDKSsF (ORCPT ); Wed, 11 Apr 2018 14:48:05 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:59548 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756016AbeDKSsE (ORCPT ); Wed, 11 Apr 2018 14:48:04 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Suman Anna , Sekhar Nori , Sasha Levin Subject: [PATCH 4.4 059/190] ARM: davinci: da8xx: Create DSP device only when assigned memory Date: Wed, 11 Apr 2018 20:35:05 +0200 Message-Id: <20180411183553.782592752@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180411183550.114495991@linuxfoundation.org> References: <20180411183550.114495991@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Suman Anna [ Upstream commit f97f03578b997a8ec2b9bc4928f958a865137268 ] The DSP device on Davinci platforms does not have an MMU and requires specific DDR memory to boot. This memory is reserved using the rproc_mem kernel boot parameter and is assigned to the device on non-DT boots. The remoteproc core uses the DMA API and so will fall back to assigning random memory if this memory is not assigned to the device, but the DSP remote processor boot will not be successful in such cases. So, check that memory has been reserved and assigned to the device specifically before even creating the DSP device. Signed-off-by: Suman Anna Signed-off-by: Sekhar Nori Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-davinci/devices-da8xx.c | 10 ++++++++++ 1 file changed, 10 insertions(+) --- a/arch/arm/mach-davinci/devices-da8xx.c +++ b/arch/arm/mach-davinci/devices-da8xx.c @@ -795,6 +795,8 @@ static struct platform_device da8xx_dsp .resource = da8xx_rproc_resources, }; +static bool rproc_mem_inited __initdata; + #if IS_ENABLED(CONFIG_DA8XX_REMOTEPROC) static phys_addr_t rproc_base __initdata; @@ -833,6 +835,8 @@ void __init da8xx_rproc_reserve_cma(void ret = dma_declare_contiguous(&da8xx_dsp.dev, rproc_size, rproc_base, 0); if (ret) pr_err("%s: dma_declare_contiguous failed %d\n", __func__, ret); + else + rproc_mem_inited = true; } #else @@ -847,6 +851,12 @@ int __init da8xx_register_rproc(void) { int ret; + if (!rproc_mem_inited) { + pr_warn("%s: memory not reserved for DSP, not registering DSP device\n", + __func__); + return -ENOMEM; + } + ret = platform_device_register(&da8xx_dsp); if (ret) pr_err("%s: can't register DSP device: %d\n", __func__, ret);