return ret;
}
-static int drm_platform_set_busid(struct drm_device *dev, struct drm_master *master)
+int drm_platform_set_busid(struct drm_device *dev, struct drm_master *master)
{
- int len, ret, id;
-
- master->unique_len = 13 + strlen(dev->platformdev->name);
- master->unique_size = master->unique_len;
- master->unique = kmalloc(master->unique_len + 1, GFP_KERNEL);
-
- if (master->unique == NULL)
- return -ENOMEM;
+ int id;
id = dev->platformdev->id;
-
- /* if only a single instance of the platform device, id will be
- * set to -1.. use 0 instead to avoid a funny looking bus-id:
- */
- if (id == -1)
+ if (id < 0)
id = 0;
- len = snprintf(master->unique, master->unique_len,
- "platform:%s:%02d", dev->platformdev->name, id);
-
- if (len > master->unique_len) {
- DRM_ERROR("Unique buffer overflowed\n");
- ret = -EINVAL;
- goto err;
- }
+ master->unique = kasprintf(GFP_KERNEL, "platform:%s:%02d",
+ dev->platformdev->name, id);
+ if (!master->unique)
+ return -ENOMEM;
+ master->unique_len = strlen(master->unique);
return 0;
-err:
- return ret;
}
-
-static struct drm_bus drm_platform_bus = {
- .set_busid = drm_platform_set_busid,
-};
+EXPORT_SYMBOL(drm_platform_set_busid);
/**
* drm_platform_init - Register a platform device with the DRM subsystem
{
DRM_DEBUG("\n");
- driver->bus = &drm_platform_bus;
return drm_get_platform_dev(platform_device, driver);
}
EXPORT_SYMBOL(drm_platform_init);