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-rw-r--r--drivers/serial/8250.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index a07442ffefbd..0ede0ee64243 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2232,9 +2232,10 @@ static inline void wait_for_xmitr(struct uart_8250_port *up, int bits)
/* Wait up to 1s for flow control if necessary */
if (up->port.flags & UPF_CONS_FLOW) {
tmout = 1000000;
- while (--tmout &&
- ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0))
+ while (!(serial_in(up, UART_MSR) & UART_MSR_CTS) && --tmout) {
udelay(1);
+ touch_nmi_watchdog();
+ }
}
}