[PATCH] iommu: of: Fix check for returning EPROBE_DEFER

From	Sricharan R <sricharan@codeaurora.org>
Newsgroups	linux.kernel
Subject	[PATCH] iommu: of: Fix check for returning EPROBE_DEFER
Date	2017-05-16 07:30 +0200
Message-ID	<tHDdv-1qC-5@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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While returning EPROBE_DEFER for iommu masters
take in to account of iommu nodes that could be
marked in DT as 'status=disabled', in which case
simply return NULL and let the master's probe
continue rather than deferring.

Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Will Deacon <will.deacon@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
---
 drivers/iommu/of_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index 9f44ee8..e6e9bec 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -118,6 +118,7 @@ static bool of_iommu_driver_present(struct device_node *np)
 
 	ops = iommu_ops_from_fwnode(fwnode);
 	if ((ops && !ops->of_xlate) ||
+	    !of_device_is_available(iommu_spec->np) ||
 	    (!ops && !of_iommu_driver_present(iommu_spec->np)))
 		return NULL;
 
-- 
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[PATCH] iommu: of: Fix check for returning EPROBE_DEFER Sricharan R <sricharan@codeaurora.org> - 2017-05-16 07:30 +0200
  Re: [PATCH] iommu: of: Fix check for returning EPROBE_DEFER Jonathan Neuschäfer <j.neuschaefer@gmx.net> - 2017-05-16 16:20 +0200
    Re: [PATCH] iommu: of: Fix check for returning EPROBE_DEFER Sricharan R <sricharan@codeaurora.org> - 2017-05-17 07:20 +0200

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