From fe9ed6d2483fda55465f32924fb15bce0fac3fac Mon Sep 17 00:00:00 2001
From: Lubomir Rintel <lkundrak@v3.sk>
Date: Sun, 24 Feb 2019 12:58:02 +0100
Subject: [PATCH] serial: 8250_pxa: honor the port number from devicetree
Git-commit: fe9ed6d2483fda55465f32924fb15bce0fac3fac
Patch-mainline: v5.1-rc1
References: bsc#1051510
Like the other OF-enabled drivers, use the port number from the firmware if
the devicetree specifies an alias:
aliases {
...
serial2 = &uart2; /* Should be ttyS2 */
}
This is how the deprecated pxa.c driver behaved, switching to 8250_pxa
messes up the numbering.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/tty/serial/8250/8250_pxa.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_pxa.c b/drivers/tty/serial/8250/8250_pxa.c
index b9bcbe20a2be..c47188860e32 100644
--- a/drivers/tty/serial/8250/8250_pxa.c
+++ b/drivers/tty/serial/8250/8250_pxa.c
@@ -113,6 +113,10 @@ static int serial_pxa_probe(struct platform_device *pdev)
if (ret)
return ret;
+ ret = of_alias_get_id(pdev->dev.of_node, "serial");
+ if (ret >= 0)
+ uart.port.line = ret;
+
uart.port.type = PORT_XSCALE;
uart.port.iotype = UPIO_MEM32;
uart.port.mapbase = mmres->start;
--
2.16.4