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authorJeffy Chen <jeffy.chen@rock-chips.com>2018-03-23 15:38:01 +0800
committerJoerg Roedel <jroedel@suse.de>2018-03-29 12:22:21 +0200
commit98b72b94def91be0d7918cbba6a150d97047f175 (patch)
tree0d202ea8c6ae3725d74fc54e5370182c0a33da4d /drivers/iommu
parent1a4e90f25b2ceca3152efa6f7a9e0565c52e34c1 (diff)
downloadlinux-98b72b94def91be0d7918cbba6a150d97047f175.tar.bz2
iommu/rockchip: Prohibit unbind and remove
Removal of IOMMUs cannot be done reliably. This is similar to exynos iommu driver. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Reviewed-by: Tomasz Figa <tfiga@chromium.org> Acked-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/rockchip-iommu.c21
1 files changed, 1 insertions, 20 deletions
diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index 6a3719e118da..e7fb824d123e 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -1197,18 +1197,6 @@ static int rk_iommu_probe(struct platform_device *pdev)
return err;
}
-static int rk_iommu_remove(struct platform_device *pdev)
-{
- struct rk_iommu *iommu = platform_get_drvdata(pdev);
-
- if (iommu) {
- iommu_device_sysfs_remove(&iommu->iommu);
- iommu_device_unregister(&iommu->iommu);
- }
-
- return 0;
-}
-
static void rk_iommu_shutdown(struct platform_device *pdev)
{
struct rk_iommu *iommu = platform_get_drvdata(pdev);
@@ -1234,11 +1222,11 @@ MODULE_DEVICE_TABLE(of, rk_iommu_dt_ids);
static struct platform_driver rk_iommu_driver = {
.probe = rk_iommu_probe,
- .remove = rk_iommu_remove,
.shutdown = rk_iommu_shutdown,
.driver = {
.name = "rk_iommu",
.of_match_table = rk_iommu_dt_ids,
+ .suppress_bind_attrs = true,
},
};
@@ -1266,14 +1254,7 @@ static int __init rk_iommu_init(void)
platform_driver_unregister(&rk_iommu_domain_driver);
return ret;
}
-static void __exit rk_iommu_exit(void)
-{
- platform_driver_unregister(&rk_iommu_driver);
- platform_driver_unregister(&rk_iommu_domain_driver);
-}
-
subsys_initcall(rk_iommu_init);
-module_exit(rk_iommu_exit);
MODULE_DESCRIPTION("IOMMU API for Rockchip");
MODULE_AUTHOR("Simon Xue <xxm@rock-chips.com> and Daniel Kurtz <djkurtz@chromium.org>");