4.19-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit fe9ed6d2483fda55465f32924fb15bce0fac3fac ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- 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;