The kernel doc (kobject.txt) says that
"No structure should EVER have more than one kobject embedded within it.
If it does, the reference counting for the object is sure to be messed
up and incorrect, and your code will be buggy. So do not do this. "
But in the file drivers/uio/uio.c, a structure has two such kobjects.
struct uio_device {
struct module *owner;
struct device *dev;
int minor;
atomic_t event;
struct fasync_struct *async_queue;
wait_queue_head_t wait;
int vma_count;
struct uio_info *info;
struct kobject *map_dir;
struct kobject *portio_dir;
};
So, What is the exception for this structure? Is this right? If yes,
can someone explain why it is right, and where should we use it?
Thanks,
Vikram
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