[PATCH 6/9] serial: doc: .break_ctl() is called with port->mutex() held

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Note that mutex_lock() should not be called with interrupts disabled.

Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
 Documentation/serial/driver | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Documentation/serial/driver b/Documentation/serial/driver
index 3b08df5bcc17e944..09e73e061fcf795c 100644
--- a/Documentation/serial/driver
+++ b/Documentation/serial/driver
@@ -177,8 +177,7 @@ hardware.
 	should be terminated when another call is made with a zero
 	ctl.
 
-	Locking: none.
-	Interrupts: caller dependent.
+	Locking: caller holds port->mutex
 	This call must not sleep
 
   startup(port)
-- 
1.9.1

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