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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2015-03-23 09:18:27 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2015-03-23 09:18:27 -0700
commit188933ac139a6f8ab06cad369bd0200af947b00d (patch)
treec4c107528fcf6b82e32a93b0596e13eea7aa9385 /drivers/tty/tty_buffer.c
parent4ed0e032c3cf27c6fabc154164d003c4e0ac4654 (diff)
parentbc465aa9d045feb0e13b4a8f32cc33c1943f62d6 (diff)
Merge tag 'v4.0-rc5' into next
Merge with the latest upstream to synchronize Synaptics changes and bring in new infrastructure pieces. Conflicts: drivers/input/mouse/synaptics.c
Diffstat (limited to 'drivers/tty/tty_buffer.c')
-rw-r--r--drivers/tty/tty_buffer.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 3605103fc1ac..75661641f5fe 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -557,3 +557,9 @@ int tty_buffer_set_limit(struct tty_port *port, int limit)
return 0;
}
EXPORT_SYMBOL_GPL(tty_buffer_set_limit);
+
+/* slave ptys can claim nested buffer lock when handling BRK and INTR */
+void tty_buffer_set_lock_subclass(struct tty_port *port)
+{
+ lockdep_set_subclass(&port->buf.lock, TTY_LOCK_SLAVE);
+}