[PATCH v6 17/21] iommu/tegra: gart: Don't use managed resources

Dmitry Osipenko
2018-12-09T20:29:46Z

GART is a part of the Memory Controller driver that is always built-in,
hence there is no benefit from the use of managed resources.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
---
drivers/iommu/tegra-gart.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index 1be595d15e7e..99afdbf8860c 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -173,7 +173,7 @@ static int gart_iommu_attach_dev(struct iommu_domain *domain,
struct gart_client *client, *c;
int err = 0;

- client = devm_kzalloc(gart->dev, sizeof(*c), GFP_KERNEL);
+ client = kzalloc(sizeof(*c), GFP_KERNEL);
if (!client)
return -ENOMEM;
client->dev = dev;
@@ -199,7 +199,7 @@ static int gart_iommu_attach_dev(struct iommu_domain *domain,
return 0;

fail:
- devm_kfree(gart->dev, client);
+ kfree(client);
spin_unlock(&gart->client_lock);
return err;
}
@@ -214,7 +214,7 @@ static void __gart_iommu_detach_dev(struct iommu_domain *domain,
list_for_each_entry(c, &gart->client, list) {
if (c->dev == dev) {
list_del(&c->list);
- devm_kfree(gart->dev, c);
+ kfree(c);
if (list_empty(&gart->client))
gart->active_domain = NULL;
dev_dbg(gart->dev, "Detached %s\n", dev_name(dev));
@@ -461,7 +461,7 @@ struct gart_device *tegra_gart_probe(struct device *dev,
return ERR_PTR(-ENXIO);
}

- gart = devm_kzalloc(dev, sizeof(*gart), GFP_KERNEL);
+ gart = kzalloc(sizeof(*gart), GFP_KERNEL);
if (!gart) {
dev_err(dev, "failed to allocate gart_device\n");
return ERR_PTR(-ENOMEM);
@@ -470,7 +470,7 @@ struct gart_device *tegra_gart_probe(struct device *dev,
ret = iommu_device_sysfs_add(&gart->iommu, dev, NULL, "gart");
if (ret) {
dev_err(dev, "Failed to register IOMMU in sysfs\n");
- return ERR_PTR(ret);
+ goto free_gart;
}

iommu_device_set_ops(&gart->iommu, &gart_iommu_ops);
@@ -508,6 +508,8 @@ struct gart_device *tegra_gart_probe(struct device *dev,
iommu_device_unregister(&gart->iommu);
remove_sysfs:
iommu_device_sysfs_remove(&gart->iommu);
+free_gart:
+ kfree(gart);

return ERR_PTR(ret);
}
--
2.19.1