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Commit f7403abf authored by Robin Murphy's avatar Robin Murphy Committed by Joerg Roedel
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iommu/io-pgtable: Abstract iommu_iotlb_gather access



Previously io-pgtable merely passed the iommu_iotlb_gather pointer
through to helpers, but now it has grown its own direct dereference.
This turns out to break the build for !IOMMU_API configs where the
structure only has a dummy definition. It will probably also crash
drivers who don't use the gather mechanism and simply pass in NULL.

Wrap this dereference in a suitable helper which can both be stubbed
out for !IOMMU_API and encapsulate a NULL check otherwise.

Fixes: 7a7c5bad ("iommu: Indicate queued flushes via gather data")
Reported-by: default avatarkernel test robot <lkp@intel.com>
Signed-off-by: default avatarRobin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/83672ee76f6405c82845a55c148fa836f56fbbc1.1629465282.git.robin.murphy@arm.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 452e69b5
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