serial: replace the state mutex with the tty port mutex

They cover essentially the same stuff and we can therefore fold it into the
tty_port one.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 2 deletions

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index f98dc78abb27..27767ea5fa29 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -351,8 +351,6 @@ struct uart_state {
         struct tasklet_struct   tlet;
         wait_queue_head_t       delta_msr_wait;
         struct uart_port        *uart_port;
-
-        struct mutex            mutex;
 };
 
 #define UART_XMIT_SIZE  PAGE_SIZE