serial: efm32: properly namespace location property
While reviewing an i2c driver for efm32 that needs a similar property
Wolfram Sang pointed out that "location" is a too generic name for something
that is efm32 specific. So add an appropriate namespace and fall back to the
generic name in case of failure.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/Documentation/devicetree/bindings/serial/efm32-uart.txt b/Documentation/devicetree/bindings/serial/efm32-uart.txt
index 8e080b8..1984bdf 100644
--- a/Documentation/devicetree/bindings/serial/efm32-uart.txt
+++ b/Documentation/devicetree/bindings/serial/efm32-uart.txt
@@ -6,7 +6,7 @@
- interrupts : Should contain uart interrupt
Optional properties:
-- location : Decides the location of the USART I/O pins.
+- efm32,location : Decides the location of the USART I/O pins.
Allowed range : [0 .. 5]
Default: 0
@@ -16,5 +16,5 @@
compatible = "efm32,uart";
reg = <0x4000c400 0x400>;
interrupts = <15>;
- location = <0>;
+ efm32,location = <0>;
};
diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
index 0eb5b56..028582e 100644
--- a/drivers/tty/serial/efm32-uart.c
+++ b/drivers/tty/serial/efm32-uart.c
@@ -671,7 +671,10 @@
if (!np)
return 1;
- ret = of_property_read_u32(np, "location", &location);
+ ret = of_property_read_u32(np, "efm32,location", &location);
+ if (ret)
+ /* fall back to old and (wrongly) generic property "location" */
+ ret = of_property_read_u32(np, "location", &location);
if (!ret) {
if (location > 5) {
dev_err(&pdev->dev, "invalid location\n");