From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Subject: Re: [PATCH v2 06/22] ARM: dt: tegra114: iommu: Fix IOMMU register address Date: Tue, 16 Jul 2013 17:18:29 -0600 Message-ID: <51E5D4C5.4090109@wwwdotorg.org> References: <1373021097-32420-1-git-send-email-hdoyu@nvidia.com> <1373021097-32420-7-git-send-email-hdoyu@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1373021097-32420-7-git-send-email-hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Hiroshi Doyu Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org List-Id: iommu@lists.linux-foundation.org On 07/05/2013 04:44 AM, Hiroshi Doyu wrote: > Fix IOMMU register address. Oh dear, how serious is this? That incorrect node got added in v3.9 - a long time ago. Does the SMMU driver touch registers during probe() or under any other condition right now? If so, can that hang the CPU or end up trashing some other HW module's registers? I'm trying to determine whether we need to urgently send this patch as a fix Cc: stable.