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-rw-r--r--drivers/serial/mux.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/serial/mux.c b/drivers/serial/mux.c
index 36e3bcb1ebf..7633132a10a 100644
--- a/drivers/serial/mux.c
+++ b/drivers/serial/mux.c
@@ -477,6 +477,13 @@ static int __init mux_probe(struct parisc_device *dev)
port->ops = &mux_pops;
port->flags = UPF_BOOT_AUTOCONF;
port->line = port_cnt;
+
+ /* The port->timeout needs to match what is present in
+ * uart_wait_until_sent in serial_core.c. Otherwise
+ * the time spent in msleep_interruptable will be very
+ * long, causing the appearance of a console hang.
+ */
+ port->timeout = HZ / 50;
spin_lock_init(&port->lock);
status = uart_add_one_port(&mux_driver, port);
BUG_ON(status);