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Date: Mon, 16 Mar 2020 16:51:16 +0100
From: Jean-Philippe Brucker <jean-philippe@...aro.org>
To: Joerg Roedel <joro@...tes.org>
Cc: iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-mediatek@...ts.infradead.org,
virtualization@...ts.linux-foundation.org,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Hanjun Guo <guohanjun@...wei.com>,
Sudeep Holla <sudeep.holla@....com>,
Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
Will Deacon <will@...nel.org>,
Robin Murphy <robin.murphy@....com>,
Matthias Brugger <matthias.bgg@...il.com>,
Thierry Reding <thierry.reding@...il.com>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH 12/15] iommu/mediatek: Use accessor functions for iommu
private data
On Tue, Mar 10, 2020 at 10:12:26AM +0100, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@...e.de>
>
> Make use of dev_iommu_priv_set/get() functions.
>
> Signed-off-by: Joerg Roedel <jroedel@...e.de>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@...aro.org>
> ---
> drivers/iommu/mtk_iommu.c | 13 ++++++-------
> drivers/iommu/mtk_iommu_v1.c | 14 +++++++-------
> 2 files changed, 13 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> index 95945f467c03..5f4d6df59cf6 100644
> --- a/drivers/iommu/mtk_iommu.c
> +++ b/drivers/iommu/mtk_iommu.c
> @@ -358,8 +358,8 @@ static void mtk_iommu_domain_free(struct iommu_domain *domain)
> static int mtk_iommu_attach_device(struct iommu_domain *domain,
> struct device *dev)
> {
> + struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
> struct mtk_iommu_domain *dom = to_mtk_domain(domain);
> - struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
>
> if (!data)
> return -ENODEV;
> @@ -378,7 +378,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
> static void mtk_iommu_detach_device(struct iommu_domain *domain,
> struct device *dev)
> {
> - struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
> + struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
>
> if (!data)
> return;
> @@ -450,7 +450,7 @@ static int mtk_iommu_add_device(struct device *dev)
> if (!fwspec || fwspec->ops != &mtk_iommu_ops)
> return -ENODEV; /* Not a iommu client device */
>
> - data = fwspec->iommu_priv;
> + data = dev_iommu_priv_get(dev);
> iommu_device_link(&data->iommu, dev);
>
> group = iommu_group_get_for_dev(dev);
> @@ -469,7 +469,7 @@ static void mtk_iommu_remove_device(struct device *dev)
> if (!fwspec || fwspec->ops != &mtk_iommu_ops)
> return;
>
> - data = fwspec->iommu_priv;
> + data = dev_iommu_priv_get(dev);
> iommu_device_unlink(&data->iommu, dev);
>
> iommu_group_remove_device(dev);
> @@ -496,7 +496,6 @@ static struct iommu_group *mtk_iommu_device_group(struct device *dev)
>
> static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
> {
> - struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
> struct platform_device *m4updev;
>
> if (args->args_count != 1) {
> @@ -505,13 +504,13 @@ static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
> return -EINVAL;
> }
>
> - if (!fwspec->iommu_priv) {
> + if (!dev_iommu_priv_get(dev)) {
> /* Get the m4u device */
> m4updev = of_find_device_by_node(args->np);
> if (WARN_ON(!m4updev))
> return -EINVAL;
>
> - fwspec->iommu_priv = platform_get_drvdata(m4updev);
> + dev_iommu_priv_set(dev, platform_get_drvdata(m4updev));
> }
>
> return iommu_fwspec_add_ids(dev, args->args, 1);
> diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c
> index e93b94ecac45..9930ac7413cc 100644
> --- a/drivers/iommu/mtk_iommu_v1.c
> +++ b/drivers/iommu/mtk_iommu_v1.c
> @@ -263,8 +263,8 @@ static void mtk_iommu_domain_free(struct iommu_domain *domain)
> static int mtk_iommu_attach_device(struct iommu_domain *domain,
> struct device *dev)
> {
> + struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
> struct mtk_iommu_domain *dom = to_mtk_domain(domain);
> - struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
> int ret;
>
> if (!data)
> @@ -286,7 +286,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
> static void mtk_iommu_detach_device(struct iommu_domain *domain,
> struct device *dev)
> {
> - struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
> + struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
>
> if (!data)
> return;
> @@ -387,20 +387,20 @@ static int mtk_iommu_create_mapping(struct device *dev,
> return -EINVAL;
> }
>
> - if (!fwspec->iommu_priv) {
> + if (!dev_iommu_priv_get(dev)) {
> /* Get the m4u device */
> m4updev = of_find_device_by_node(args->np);
> if (WARN_ON(!m4updev))
> return -EINVAL;
>
> - fwspec->iommu_priv = platform_get_drvdata(m4updev);
> + dev_iommu_priv_set(dev, platform_get_drvdata(m4updev));
> }
>
> ret = iommu_fwspec_add_ids(dev, args->args, 1);
> if (ret)
> return ret;
>
> - data = fwspec->iommu_priv;
> + data = dev_iommu_priv_get(dev);
> m4udev = data->dev;
> mtk_mapping = m4udev->archdata.iommu;
> if (!mtk_mapping) {
> @@ -459,7 +459,7 @@ static int mtk_iommu_add_device(struct device *dev)
> if (err)
> return err;
>
> - data = fwspec->iommu_priv;
> + data = dev_iommu_priv_get(dev)
> mtk_mapping = data->dev->archdata.iommu;
> err = arm_iommu_attach_device(dev, mtk_mapping);
> if (err) {
> @@ -478,7 +478,7 @@ static void mtk_iommu_remove_device(struct device *dev)
> if (!fwspec || fwspec->ops != &mtk_iommu_ops)
> return;
>
> - data = fwspec->iommu_priv;
> + data = dev_iommu_priv_get(dev)
> iommu_device_unlink(&data->iommu, dev);
>
> iommu_group_remove_device(dev);
> --
> 2.17.1
>
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