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Date: Tue, 7 Apr 2020 20:37:31 +0200 From: Joerg Roedel <joro@...tes.org> To: Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>, Marek Szyprowski <m.szyprowski@...sung.com>, Kukjin Kim <kgene@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>, David Woodhouse <dwmw2@...radead.org>, Lu Baolu <baolu.lu@...ux.intel.com>, Andy Gross <agross@...nel.org>, Bjorn Andersson <bjorn.andersson@...aro.org>, Matthias Brugger <matthias.bgg@...il.com>, Rob Clark <robdclark@...il.com>, Heiko Stuebner <heiko@...ech.de>, Gerald Schaefer <gerald.schaefer@...ibm.com>, Thierry Reding <thierry.reding@...il.com>, Jonathan Hunter <jonathanh@...dia.com>, Jean-Philippe Brucker <jean-philippe@...aro.org> Cc: iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org, linux-arm-msm@...r.kernel.org, linux-mediatek@...ts.infradead.org, linux-rockchip@...ts.infradead.org, linux-s390@...r.kernel.org, linux-tegra@...r.kernel.org, virtualization@...ts.linux-foundation.org, Joerg Roedel <jroedel@...e.de> Subject: [RFC PATCH 23/34] iommu/mediatek: Convert to probe/release_device() call-backs From: Joerg Roedel <jroedel@...e.de> Convert the Mediatek IOMMU driver to use the probe_device() and release_device() call-backs of iommu_ops, so that the iommu core code does the group and sysfs setup. Signed-off-by: Joerg Roedel <jroedel@...e.de> --- drivers/iommu/mtk_iommu.c | 24 ++++++------------------ 1 file changed, 6 insertions(+), 18 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 5f4d6df59cf6..2be96f1cdbd2 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -441,38 +441,26 @@ static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain, return pa; } -static int mtk_iommu_add_device(struct device *dev) +static struct iommu_device *mtk_iommu_probe_device(struct device *dev) { struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); struct mtk_iommu_data *data; - struct iommu_group *group; if (!fwspec || fwspec->ops != &mtk_iommu_ops) - return -ENODEV; /* Not a iommu client device */ + return ERR_PTR(-ENODEV); /* Not a iommu client device */ data = dev_iommu_priv_get(dev); - iommu_device_link(&data->iommu, dev); - group = iommu_group_get_for_dev(dev); - if (IS_ERR(group)) - return PTR_ERR(group); - - iommu_group_put(group); - return 0; + return &data->iommu; } -static void mtk_iommu_remove_device(struct device *dev) +static void mtk_iommu_release_device(struct device *dev) { struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); - struct mtk_iommu_data *data; if (!fwspec || fwspec->ops != &mtk_iommu_ops) return; - data = dev_iommu_priv_get(dev); - iommu_device_unlink(&data->iommu, dev); - - iommu_group_remove_device(dev); iommu_fwspec_free(dev); } @@ -526,8 +514,8 @@ static const struct iommu_ops mtk_iommu_ops = { .flush_iotlb_all = mtk_iommu_flush_iotlb_all, .iotlb_sync = mtk_iommu_iotlb_sync, .iova_to_phys = mtk_iommu_iova_to_phys, - .add_device = mtk_iommu_add_device, - .remove_device = mtk_iommu_remove_device, + .probe_device = mtk_iommu_probe_device, + .release_device = mtk_iommu_release_device, .device_group = mtk_iommu_device_group, .of_xlate = mtk_iommu_of_xlate, .pgsize_bitmap = SZ_4K | SZ_64K | SZ_1M | SZ_16M, -- 2.17.1
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