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serial: efm32: properly namespace location property

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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>
This commit is contained in:
Uwe Kleine-König 2014-03-14 21:42:11 +01:00 committed by Greg Kroah-Hartman
parent 58dea3577c
commit 74be65a3cf
2 changed files with 6 additions and 3 deletions
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4
Documentation/devicetree/bindings/serial/efm32-uart.txt
View File

@ -6,7 +6,7 @@ Required properties:
- 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 @@ uart@0x4000c400 {
compatible = "efm32,uart";
reg = <0x4000c400 0x400>;
interrupts = <15>;
location = <0>;
efm32,location = <0>;
};

5
drivers/tty/serial/efm32-uart.c
View File

@ -671,7 +671,10 @@ static int efm32_uart_probe_dt(struct platform_device *pdev,
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");