#include <linux/of.h>
#include <linux/of_iommu.h>
#include <linux/of_irq.h>
+#include <linux/of_platform.h>
#include <asm/cacheflush.h>
goto err_enable;
flush_iotlb_all(obj);
- if (!try_module_get(obj->owner)) {
- err = -ENODEV;
- goto err_module;
- }
-
spin_unlock(&obj->iommu_lock);
dev_dbg(obj->dev, "%s: %s\n", __func__, obj->name);
return obj;
-err_module:
- if (obj->refcount == 1)
- iommu_disable(obj);
err_enable:
obj->refcount--;
spin_unlock(&obj->iommu_lock);
if (--obj->refcount == 0)
iommu_disable(obj);
- module_put(obj->owner);
-
obj->iopgd = NULL;
spin_unlock(&obj->iommu_lock);
return 0;
}
-static struct of_device_id omap_iommu_of_match[] = {
+static const struct of_device_id omap_iommu_of_match[] = {
{ .compatible = "ti,omap2-iommu" },
{ .compatible = "ti,omap4-iommu" },
{ .compatible = "ti,dra7-iommu" },
struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
int ret = 0;
+ if (!arch_data || !arch_data->name) {
+ dev_err(dev, "device doesn't have an associated iommu\n");
+ return -EINVAL;
+ }
+
spin_lock(&omap_domain->lock);
/* only a single device is supported per domain for now */
{
struct omap_iommu_arch_data *arch_data;
struct device_node *np;
+ struct platform_device *pdev;
/*
* Allocate the archdata iommu structure for DT-based devices.
if (!np)
return 0;
+ pdev = of_find_device_by_node(np);
+ if (WARN_ON(!pdev)) {
+ of_node_put(np);
+ return -EINVAL;
+ }
+
arch_data = kzalloc(sizeof(*arch_data), GFP_KERNEL);
if (!arch_data) {
of_node_put(np);
return -ENOMEM;
}
- arch_data->name = kstrdup(dev_name(dev), GFP_KERNEL);
+ arch_data->name = kstrdup(dev_name(&pdev->dev), GFP_KERNEL);
dev->archdata.iommu = arch_data;
of_node_put(np);