From: Joerg Roedel jroedel@suse.de
mainline inclusion from mainline-v4.20-rc1 commit a9bf2eec5a6fc01a0a5250eaf0bf61dfd382a78a category:feature bugzilla:NA CVE:NA
-------------------
Use the new helpers dev_iommu_fwspec_get()/set() to access the dev->iommu_fwspec pointer. This makes it easier to move that pointer later into another struct.
Cc: Matthias Brugger matthias.bgg@gmail.com Tested-by: Yong Wu yong.wu@mediatek.com Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Chen Jun chenjun102@huawei.com Reviewed-by: Hanjun Guo guohanjun@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/iommu/mtk_iommu.c | 21 ++++++++++++--------- drivers/iommu/mtk_iommu_v1.c | 28 ++++++++++++++++------------ 2 files changed, 28 insertions(+), 21 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 8e75f34ac886..5ed3c8ec0b64 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -268,7 +268,7 @@ static void mtk_iommu_config(struct mtk_iommu_data *data, { struct mtk_smi_larb_iommu *larb_mmu; unsigned int larbid, portid; - struct iommu_fwspec *fwspec = dev->iommu_fwspec; + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); int i;
for (i = 0; i < fwspec->num_ids; ++i) { @@ -360,7 +360,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain, struct device *dev) { struct mtk_iommu_domain *dom = to_mtk_domain(domain); - struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv; + struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data) return -ENODEV; @@ -379,7 +379,7 @@ 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->iommu_priv; + struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data) return; @@ -441,13 +441,14 @@ static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain,
static int mtk_iommu_add_device(struct device *dev) { + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); struct mtk_iommu_data *data; struct iommu_group *group;
- if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops) + if (!fwspec || fwspec->ops != &mtk_iommu_ops) return -ENODEV; /* Not a iommu client device */
- data = dev->iommu_fwspec->iommu_priv; + data = fwspec->iommu_priv; iommu_device_link(&data->iommu, dev);
group = iommu_group_get_for_dev(dev); @@ -460,12 +461,13 @@ static int mtk_iommu_add_device(struct device *dev)
static void mtk_iommu_remove_device(struct device *dev) { + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); struct mtk_iommu_data *data;
- if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops) + if (!fwspec || fwspec->ops != &mtk_iommu_ops) return;
- data = dev->iommu_fwspec->iommu_priv; + data = fwspec->iommu_priv; iommu_device_unlink(&data->iommu, dev);
iommu_group_remove_device(dev); @@ -492,6 +494,7 @@ 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) { @@ -500,13 +503,13 @@ static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args) return -EINVAL; }
- if (!dev->iommu_fwspec->iommu_priv) { + if (!fwspec->iommu_priv) { /* Get the m4u device */ m4updev = of_find_device_by_node(args->np); if (WARN_ON(!m4updev)) return -EINVAL;
- dev->iommu_fwspec->iommu_priv = platform_get_drvdata(m4updev); + fwspec->iommu_priv = 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 676c029494e4..96d30111c34e 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -206,7 +206,7 @@ static void mtk_iommu_config(struct mtk_iommu_data *data, { struct mtk_smi_larb_iommu *larb_mmu; unsigned int larbid, portid; - struct iommu_fwspec *fwspec = dev->iommu_fwspec; + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); int i;
for (i = 0; i < fwspec->num_ids; ++i) { @@ -271,7 +271,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain, struct device *dev) { struct mtk_iommu_domain *dom = to_mtk_domain(domain); - struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv; + struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv; int ret;
if (!data) @@ -293,7 +293,7 @@ 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->iommu_priv; + struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data) return; @@ -371,6 +371,7 @@ static struct iommu_ops mtk_iommu_ops; static int mtk_iommu_create_mapping(struct device *dev, struct of_phandle_args *args) { + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); struct mtk_iommu_data *data; struct platform_device *m4updev; struct dma_iommu_mapping *mtk_mapping; @@ -383,28 +384,29 @@ static int mtk_iommu_create_mapping(struct device *dev, return -EINVAL; }
- if (!dev->iommu_fwspec) { + if (!fwspec) { ret = iommu_fwspec_init(dev, &args->np->fwnode, &mtk_iommu_ops); if (ret) return ret; - } else if (dev->iommu_fwspec->ops != &mtk_iommu_ops) { + fwspec = dev_iommu_fwspec_get(dev); + } else if (dev_iommu_fwspec_get(dev)->ops != &mtk_iommu_ops) { return -EINVAL; }
- if (!dev->iommu_fwspec->iommu_priv) { + if (!fwspec->iommu_priv) { /* Get the m4u device */ m4updev = of_find_device_by_node(args->np); if (WARN_ON(!m4updev)) return -EINVAL;
- dev->iommu_fwspec->iommu_priv = platform_get_drvdata(m4updev); + fwspec->iommu_priv = platform_get_drvdata(m4updev); }
ret = iommu_fwspec_add_ids(dev, args->args, 1); if (ret) return ret;
- data = dev->iommu_fwspec->iommu_priv; + data = fwspec->iommu_priv; m4udev = data->dev; mtk_mapping = m4udev->archdata.iommu; if (!mtk_mapping) { @@ -422,6 +424,7 @@ static int mtk_iommu_create_mapping(struct device *dev,
static int mtk_iommu_add_device(struct device *dev) { + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); struct dma_iommu_mapping *mtk_mapping; struct of_phandle_args iommu_spec; struct of_phandle_iterator it; @@ -440,7 +443,7 @@ static int mtk_iommu_add_device(struct device *dev) of_node_put(iommu_spec.np); }
- if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops) + if (!fwspec || fwspec->ops != &mtk_iommu_ops) return -ENODEV; /* Not a iommu client device */
/* @@ -458,7 +461,7 @@ static int mtk_iommu_add_device(struct device *dev) if (err) return err;
- data = dev->iommu_fwspec->iommu_priv; + data = fwspec->iommu_priv; mtk_mapping = data->dev->archdata.iommu; err = arm_iommu_attach_device(dev, mtk_mapping); if (err) { @@ -471,12 +474,13 @@ static int mtk_iommu_add_device(struct device *dev)
static void mtk_iommu_remove_device(struct device *dev) { + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); struct mtk_iommu_data *data;
- if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops) + if (!fwspec || fwspec->ops != &mtk_iommu_ops) return;
- data = dev->iommu_fwspec->iommu_priv; + data = fwspec->iommu_priv; iommu_device_unlink(&data->iommu, dev);
iommu_group_remove_device(dev);