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-rw-r--r--drivers/tty/serial/pmac_zilog.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index ba65a3bbd72a..96e7aa479961 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -213,6 +213,7 @@ static void pmz_interrupt_control(struct uart_pmac_port *uap, int enable)
}
static bool pmz_receive_chars(struct uart_pmac_port *uap)
+ __must_hold(&uap->port.lock)
{
struct tty_port *port;
unsigned char ch, r1, drop, flag;