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Re: [PATCH v6 1/6] iommu: of: Fix check for returning EPROBE_DEFER

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On Sat, May 27, 2017 at 07:17:40PM +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")
> 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>
> Signed-off-by: Sricharan R <sricharan@codeaurora.org>
> ---
>  drivers/iommu/of_iommu.c | 1 +
>  1 file changed, 1 insertion(+)

Sorry for the confusion, I meant to apply this version of the patch-set
instead of v5.

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[PATCH v6 1/6] iommu: of: Fix check for returning EPROBE_DEFER Sricharan R <sricharan@codeaurora.org> - 2017-05-27 15:50 +0200
  [PATCH v6 5/6] ACPI/IORT: Move the check to get iommu_ops from translated fwspec Sricharan R <sricharan@codeaurora.org> - 2017-05-27 15:50 +0200
  [PATCH v6 3/6] ACPI/IORT: Ignore all errors except EPROBE_DEFER Sricharan R <sricharan@codeaurora.org> - 2017-05-27 15:50 +0200
    Re: [PATCH v6 3/6] ACPI/IORT: Ignore all errors except EPROBE_DEFER "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2017-05-27 21:30 +0200
      Re: [PATCH v6 3/6] ACPI/IORT: Ignore all errors except EPROBE_DEFER Sricharan R <sricharan@codeaurora.org> - 2017-05-29 07:10 +0200
        Re: [PATCH v6 3/6] ACPI/IORT: Ignore all errors except EPROBE_DEFER Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-05-30 11:10 +0200
  [PATCH v6 6/6] arm: dma-mapping: Reset the device's dma_ops Sricharan R <sricharan@codeaurora.org> - 2017-05-27 15:50 +0200
  [PATCH v6 4/6] ARM: dma-mapping: Don't tear down third-party mappings Sricharan R <sricharan@codeaurora.org> - 2017-05-27 15:50 +0200
  [PATCH v6 2/6] iommu: of: Ignore all errors except EPROBE_DEFER Sricharan R <sricharan@codeaurora.org> - 2017-05-27 16:00 +0200
  Re: [PATCH v6 1/6] iommu: of: Fix check for returning EPROBE_DEFER Joerg Roedel <joro@8bytes.org> - 2017-05-30 11:40 +0200

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