#include <linux/module.h>
#include <linux/errno.h>
#include <linux/rwsem.h>
+#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/usb.h>
int err = -ENODEV;
const struct file_operations *old_fops, *new_fops = NULL;
- lock_kernel();
down_read(&minor_rwsem);
c = usb_minors[minor];
fops_put(old_fops);
done:
up_read(&minor_rwsem);
- unlock_kernel();
return err;
}