From: Joerg Roedel <joro@8bytes.org>
To: Sricharan R <sricharan@codeaurora.org>
Cc: catalin.marinas@arm.com, will.deacon@arm.com,
okaya@codeaurora.org, laurent.pinchart@ideasonboard.com,
frowand.list@gmail.com, m.szyprowski@samsung.com,
linux-arch@vger.kernel.org, lorenzo.pieralisi@arm.com,
tn@semihalf.com, magnus.damm@gmail.com,
linux-acpi@vger.kernel.org, geert@linux-m68k.org,
linux-pci@vger.kernel.org, lenb@kernel.org,
devicetree@vger.kernel.org, arnd@arndb.de,
linux-arm-msm@vger.kernel.org, j.neuschaefer@gmx.net,
robh+dt@kernel.org, bhelgaas@google.com,
linux-arm-kernel@lists.infradead.org, rjw@rjwysocki.net,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
hanjun.guo@linaro.org, sudeep.holla@arm.com,
robin.murphy@arm.com, nwatters@codeaurora.org
Subject: Re: [PATCH v5 1/5] iommu: of: Fix check for returning EPROBE_DEFER
Date: Tue, 30 May 2017 11:27:59 +0200 [thread overview]
Message-ID: <20170530092759.GC2818@8bytes.org> (raw)
In-Reply-To: <1495544493-14219-1-git-send-email-sricharan@codeaurora.org>
On Tue, May 23, 2017 at 06:31:29PM +0530, Sricharan R wrote:
> Now with IOMMU probe deferral, we return -EPROBE_DEFER
> for masters that are connected to an IOMMU which is not
> probed yet, but going to get probed, so that we can attach
> the correct dma_ops. So while trying to defer the probe of
> the master, check if the of_iommu node that it is connected
> to is marked in DT as 'status=disabled', then the IOMMU is never
> is going to get probed. So simply return NULL and let the master
> work without an IOMMU.
>
> Fixes: 7b07cbefb68d ("iommu: of: Handle IOMMU lookup failure with deferred probing or error")
> Signed-off-by: Sricharan R <sricharan@codeaurora.org>
> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Tested-by: Will Deacon <will.deacon@arm.com>
> Tested-by: Magnus Damn <magnus.damn@gmail.com>
> Acked-by: Will Deacon <will.deacon@arm.com>
Applied all to iommu/fixes, thanks.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
prev parent reply other threads:[~2017-05-30 9:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-23 13:01 [PATCH v5 1/5] iommu: of: Fix check for returning EPROBE_DEFER Sricharan R
2017-05-23 13:01 ` [PATCH v5 2/5] iommu: of: Ignore all errors except EPROBE_DEFER Sricharan R
2017-05-23 13:01 ` [PATCH v5 3/5] ACPI/IORT: " Sricharan R
2017-05-23 13:01 ` [PATCH v5 4/5] ARM: dma-mapping: Don't tear third-party mappings Sricharan R
2017-05-23 13:01 ` [PATCH v5 5/5] ACPI/IORT: Move the check to get iommu_ops from translated fwspec Sricharan R
2017-05-30 9:27 ` Joerg Roedel [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170530092759.GC2818@8bytes.org \
--to=joro@8bytes.org \
--cc=arnd@arndb.de \
--cc=bhelgaas@google.com \
--cc=catalin.marinas@arm.com \
--cc=devicetree@vger.kernel.org \
--cc=frowand.list@gmail.com \
--cc=geert@linux-m68k.org \
--cc=hanjun.guo@linaro.org \
--cc=iommu@lists.linux-foundation.org \
--cc=j.neuschaefer@gmx.net \
--cc=laurent.pinchart@ideasonboard.com \
--cc=lenb@kernel.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=lorenzo.pieralisi@arm.com \
--cc=m.szyprowski@samsung.com \
--cc=magnus.damm@gmail.com \
--cc=nwatters@codeaurora.org \
--cc=okaya@codeaurora.org \
--cc=rjw@rjwysocki.net \
--cc=robh+dt@kernel.org \
--cc=robin.murphy@arm.com \
--cc=sricharan@codeaurora.org \
--cc=sudeep.holla@arm.com \
--cc=tn@semihalf.com \
--cc=will.deacon@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).