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Groups > linux.kernel > #1653017
| From | Joerg Roedel <joro@8bytes.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v5 1/5] iommu: of: Fix check for returning EPROBE_DEFER |
| Date | 2017-05-30 11:30 +0200 |
| Message-ID | <tMLDr-5ux-7@gated-at.bofh.it> (permalink) |
| References | <tKhJv-3D6-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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.
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Re: [PATCH v5 1/5] iommu: of: Fix check for returning EPROBE_DEFER Joerg Roedel <joro@8bytes.org> - 2017-05-30 11:30 +0200
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