08.12.2021 11:47, Nicolin Chen пишет: > static void tegra_smmu_attach_as(struct tegra_smmu *smmu, > struct tegra_smmu_as *as, > unsigned int swgroup) > @@ -517,6 +646,12 @@ static void tegra_smmu_attach_as(struct tegra_smmu *smmu, > dev_warn(smmu->dev, > "overwriting group->as for swgroup: %s\n", swgrp->name); > group->as = as; > + > + if (smmu->debugfs_mappings) > + debugfs_create_file(group->swgrp->name, 0444, > + smmu->debugfs_mappings, group, > + &tegra_smmu_debugfs_mappings_fops); I noticed this in KMSG: tegra-mc 7000f000.memory-controller: overwriting group->as for swgroup: g2 debugfs: File 'g2' in directory 'mappings' already present! tegra-mc 7000f000.memory-controller: overwriting group->as for swgroup: g2 debugfs: File 'g2' in directory 'mappings' already present Doesn't look okay, please fix.