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Subject: Re: [PATCH v2] iommu/tegra-smmu: Add pagetable mappings to debugfs
To:     Nicolin Chen <nicoleotsuka@gmail.com>, joro@8bytes.org,
        thierry.reding@gmail.com, will@kernel.org
Cc:     vdumpa@nvidia.com, jonathanh@nvidia.com,
        linux-tegra@vger.kernel.org, iommu@lists.linux-foundation.org,
        linux-kernel@vger.kernel.org
References: <20210310033614.16772-1-nicoleotsuka@gmail.com>
From:   Dmitry Osipenko <digetx@gmail.com>
Message-ID: <abcedfa6-fbad-b34d-fba1-d3a778fbf5b4@gmail.com>
Date:   Thu, 11 Mar 2021 17:04:06 +0300
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10.03.2021 06:36, Nicolin Chen пишет:
...
> +static int tegra_smmu_mappings_show(struct seq_file *s, void *data)
> +{
> +	struct tegra_smmu_group_debug *group_debug = s->private;
> +	const struct tegra_smmu_swgroup *group;
> +	struct tegra_smmu_as *as;
> +	struct tegra_smmu *smmu;
> +	int pd_index, pt_index;

> +DEFINE_SHOW_ATTRIBUTE(tegra_smmu_mappings);
> +
>  static void tegra_smmu_debugfs_init(struct tegra_smmu *smmu)
>  {
> +	const struct tegra_smmu_soc *soc = smmu->soc;
> +	struct tegra_smmu_group_debug *group_debug;
> +	struct device *dev = smmu->dev;
> +	struct dentry *d;
> +	int i;

You should use unsigned types for everything that isn't signed.