[PATCH 1/2] serial: 8250: Allow probe drivers to ignore tx_loadsz

[Heikki Krogerus]

In most cases the tx_loadsz is the same as fifosize. This
will store the fifosize in it if it was not separately
delivered from the driver.

Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
---
 drivers/tty/serial/8250/8250.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c
index cf6a538..19ebbdf 100644
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -3247,6 +3247,10 @@ int serial8250_register_8250_port(struct uart_8250_port *up)
 		uart->tx_loadsz		= up->tx_loadsz;
 		uart->capabilities	= up->capabilities;
 
+		/* Take tx_loadsz from fifosize if it wasn't set separately */
+		if (uart->port.fifosize && !uart->tx_loadsz)
+			uart->tx_loadsz = uart->port.fifosize;
+
 		if (up->port.dev)
 			uart->port.dev = up->port.dev;
 
-- 
1.7.10.4

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