#include #include #include #include #include /* Legacy tty mutex glue */ /* * Getting the big tty mutex. */ void tty_lock(struct tty_struct *tty) { if (WARN(tty->magic != TTY_MAGIC, "L Bad %p\n", tty)) return; tty_kref_get(tty); mutex_lock(&tty->legacy_mutex); } EXPORT_SYMBOL(tty_lock); int tty_lock_interruptible(struct tty_struct *tty) { int ret; if (WARN(tty->magic != TTY_MAGIC, "L Bad %p\n", tty)) return -EIO; tty_kref_get(tty); ret = mutex_lock_interruptible(&tty->legacy_mutex); if (ret) tty_kref_put(tty); return ret; } void tty_unlock(struct tty_struct *tty) { if (WARN(tty->magic != TTY_MAGIC, "U Bad %p\n", tty)) return; mutex_unlock(&tty->legacy_mutex); tty_kref_put(tty); } EXPORT_SYMBOL(tty_unlock); void tty_lock_slave(struct tty_struct *tty) { if (tty && tty != tty->link) tty_lock(tty); } void tty_unlock_slave(struct tty_struct *tty) { if (tty && tty != tty->link) tty_unlock(tty); } void tty_set_lock_subclass(struct tty_struct *tty) { lockdep_set_subclass(&tty->legacy_mutex, TTY_LOCK_SLAVE); } aclite-cleanup net-next plumbingsTobias Klauser
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authorFeng <fgao@ikuai8.com>2017-01-20 21:40:43 +0800
committerPablo Neira Ayuso <pablo@netfilter.org>2017-02-02 14:30:19 +0100
commit10435c1192d06bdb0bac7666452d8219d7e7c477 (patch)
tree93b76419142fe17b1d162d062c663297a3e8a965 /sound/soc/intel/haswell
parent1a28ad74ebd8f9d3c7eae0d781f72a6d30545e17 (diff)
netfilter: nf_tables: Eliminate duplicated code in nf_tables_table_enable()
If something fails in nf_tables_table_enable(), it unregisters the chains. But the rollback code is the same as nf_tables_table_disable() almostly, except there is one counter check. Now create one wrapper function to eliminate the duplicated codes. Signed-off-by: Feng <fgao@ikuai8.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'sound/soc/intel/haswell')