return ld;
}
+/**
+ * tty_ldisc_put - release the ldisc
+ *
+ * Complement of tty_ldisc_get().
+ */
+static inline void tty_ldisc_put(struct tty_ldisc *ld)
+{
+ unsigned long flags;
+
+ if (WARN_ON_ONCE(!ld))
+ return;
+
+ raw_spin_lock_irqsave(&tty_ldisc_lock, flags);
+
+ /* unreleased reader reference(s) will cause this WARN */
+ WARN_ON(!atomic_dec_and_test(&ld->users));
+
+ ld->ops->refcount--;
+ module_put(ld->ops->owner);
+ kfree(ld);
+ raw_spin_unlock_irqrestore(&tty_ldisc_lock, flags);
+}
+
static void *tty_ldiscs_seq_start(struct seq_file *m, loff_t *pos)
{
return (*pos < NR_LDISCS) ? pos : NULL;
}
EXPORT_SYMBOL_GPL(tty_ldisc_deref);
-/**
- * tty_ldisc_put - release the ldisc
- *
- * Complement of tty_ldisc_get().
- */
-static inline void tty_ldisc_put(struct tty_ldisc *ld)
-{
- unsigned long flags;
-
- if (WARN_ON_ONCE(!ld))
- return;
-
- raw_spin_lock_irqsave(&tty_ldisc_lock, flags);
-
- /* unreleased reader reference(s) will cause this WARN */
- WARN_ON(!atomic_dec_and_test(&ld->users));
-
- ld->ops->refcount--;
- module_put(ld->ops->owner);
- kfree(ld);
- raw_spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-}
-
/**
* tty_ldisc_enable - allow ldisc use
* @tty: terminal to activate ldisc on