return 0;
}
+struct dax_kmem_data {
+ const char *res_name;
+ struct resource *res[];
+};
+
static int dev_dax_kmem_probe(struct dev_dax *dev_dax)
{
struct device *dev = &dev_dax->dev;
+ struct dax_kmem_data *data;
+ int rc = -ENOMEM;
int i, mapped = 0;
- char *res_name;
int numa_node;
/*
return -EINVAL;
}
- res_name = kstrdup(dev_name(dev), GFP_KERNEL);
- if (!res_name)
+ data = kzalloc(sizeof(*data) + sizeof(struct resource *) * dev_dax->nr_range, GFP_KERNEL);
+ if (!data)
return -ENOMEM;
+ data->res_name = kstrdup(dev_name(dev), GFP_KERNEL);
+ if (!data->res_name)
+ goto err_res_name;
+
for (i = 0; i < dev_dax->nr_range; i++) {
struct resource *res;
struct range range;
- int rc;
rc = dax_kmem_range(dev_dax, i, &range);
if (rc) {
}
/* Region is permanently reserved if hotremove fails. */
- res = request_mem_region(range.start, range_len(&range), res_name);
+ res = request_mem_region(range.start, range_len(&range), data->res_name);
if (!res) {
dev_warn(dev, "mapping%d: %#llx-%#llx could not reserve region\n",
i, range.start, range.end);
*/
if (mapped)
continue;
- kfree(res_name);
- return -EBUSY;
+ rc = -EBUSY;
+ goto err_request_mem;
}
+ data->res[i] = res;
/*
* Set flags appropriate for System RAM. Leave ..._BUSY clear
if (rc) {
dev_warn(dev, "mapping%d: %#llx-%#llx memory add failed\n",
i, range.start, range.end);
- release_mem_region(range.start, range_len(&range));
+ release_resource(res);
+ kfree(res);
+ data->res[i] = NULL;
if (mapped)
continue;
- kfree(res_name);
- return rc;
+ goto err_request_mem;
}
mapped++;
}
- dev_set_drvdata(dev, res_name);
+ dev_set_drvdata(dev, data);
return 0;
+
+err_request_mem:
+ kfree(data->res_name);
+err_res_name:
+ kfree(data);
+ return rc;
}
#ifdef CONFIG_MEMORY_HOTREMOVE
{
int i, success = 0;
struct device *dev = &dev_dax->dev;
- const char *res_name = dev_get_drvdata(dev);
+ struct dax_kmem_data *data = dev_get_drvdata(dev);
/*
* We have one shot for removing memory, if some memory blocks were not
rc = remove_memory(dev_dax->target_node, range.start,
range_len(&range));
if (rc == 0) {
- release_mem_region(range.start, range_len(&range));
+ release_resource(data->res[i]);
+ kfree(data->res[i]);
+ data->res[i] = NULL;
success++;
continue;
}
}
if (success >= dev_dax->nr_range) {
- kfree(res_name);
+ kfree(data->res_name);
+ kfree(data);
dev_set_drvdata(dev, NULL);
}