Merge "iommu: arm-smmu: Avoid register writes on multiple detach calls" (33f163ac) · Commits · e / devices / android_kernel_xiaomi_sm6125

drivers/iommu/arm-smmu.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -2423,7 +2423,10 @@ static void arm_smmu_domain_remove_master(struct arm_smmu_domain *smmu_domain,

		mutex_lock(&smmu->stream_map_mutex);
		for_each_cfg_sme(fwspec, i, idx) {
		WARN_ON(s2cr[idx].attach_count == 0);
		if (WARN_ON(s2cr[idx].attach_count == 0)) {
		mutex_unlock(&smmu->stream_map_mutex);
		return;
		}
		s2cr[idx].attach_count -= 1;

		if (s2cr[idx].attach_count > 0)