From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757013Ab1LNLts (ORCPT ); Wed, 14 Dec 2011 06:49:48 -0500 Received: from mail-ww0-f44.google.com ([74.125.82.44]:43585 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756873Ab1LNLt1 (ORCPT ); Wed, 14 Dec 2011 06:49:27 -0500 From: Ohad Ben-Cohen To: , Cc: Mark Grosen , Stephen Boyd , Ohad Ben-Cohen Subject: [PATCH 1/7] remoteproc: do not require an iommu Date: Wed, 14 Dec 2011 13:48:29 +0200 Message-Id: <1323863315-8159-2-git-send-email-ohad@wizery.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1323863315-8159-1-git-send-email-ohad@wizery.com> References: <1323863315-8159-1-git-send-email-ohad@wizery.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mark Grosen Not all remote processors employ an IOMMU, so do not error out on !iommu_present(). Note: we currently still use iommu_present() to tell whether we need to configure an IOMMU or not. That works for simple cases, but will easily fail with more complicated ones (e.g. where an IOMMU exists, but not all remote processors use it). When those use cases show up, we will solve them by introducing something like remoteproc hw capabilities. [ohad@wizery.com: write commit log] Signed-off-by: Mark Grosen Signed-off-by: Ohad Ben-Cohen --- drivers/remoteproc/remoteproc_core.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index ad93d7d..0d9a955 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -105,8 +105,8 @@ static int rproc_enable_iommu(struct rproc *rproc) * that will be set by the remoteproc driver. */ if (!iommu_present(dev->bus)) { - dev_err(dev, "iommu not found\n"); - return -ENODEV; + dev_dbg(dev, "iommu not found\n"); + return 0; } domain = iommu_domain_alloc(dev->bus); -- 1.7.5.4