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authorRoland Stigge <stigge@antcom.de>2012-06-28 00:32:14 +0200
committerLinus Walleij <linus.walleij@linaro.org>2012-07-17 21:00:21 +0200
commit4fbb0022cba37eef4a263183fdb7dbee89b299f2 (patch)
treeb790642d9981ac77f244b989ae15bb9916b8427e /arch/arm/boot/dts/imx53.dtsi
parente93545763021988def06fbda28fe5da133589a96 (diff)
downloadvexpress-lsk-4fbb0022cba37eef4a263183fdb7dbee89b299f2.tar.gz
gpio: of_get_named_gpio_flags() return -EPROBE_DEFER if GPIO not yet available
of_get_named_gpio_flags() and of_get_named_gpio() return -EPROBE_DEFER if the respective GPIO is not (yet) available. This is useful if driver's probe() functions try to get a GPIO whose controller isn't probed yet. Thus, the driver can be probed again later on. The function still returns -EINVAL on other errors (parse error or node doesn't exist). This way, the case of an optional/intentionally missing GPIO is handled appropriately. Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/boot/dts/imx53.dtsi')
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