Commit 8d9b9e32 authored Nov 11, 2014 by Mitchel Humpherys Committed by Matt Wagantall May 30, 2015

iommu/arm-smmu: allow DOMAIN_ATTR_COHERENT_HTW_DISABLE to be cleared



Currently there's no way to clear DOMAIN_ATTR_COHERENT_HTW_DISABLE=0 if
you've ever set it.  Fix this.

Change-Id: I10d3bb2f72a94b2b91d4a0500e0e2d9462efcf36
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>

parent fdabb795

drivers/iommu/arm-smmu.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -2013,6 +2013,9 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain,
		if (htw_disable)
		smmu_domain->attributes \|=
		(1 << DOMAIN_ATTR_COHERENT_HTW_DISABLE);
		else
		smmu_domain->attributes &=
		~(1 << DOMAIN_ATTR_COHERENT_HTW_DISABLE);
		return 0;
		}
		default: