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| author | Roland Stigge <stigge@antcom.de> | 2012-06-28 00:32:14 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2012-07-17 21:00:21 +0200 |
| commit | 4fbb0022cba37eef4a263183fdb7dbee89b299f2 (patch) | |
| tree | b790642d9981ac77f244b989ae15bb9916b8427e /drivers/gpio/gpio-wm8994.c | |
| parent | gpiolib: Defer failed gpio requests by default (diff) | |
| download | linux-4fbb0022cba37eef4a263183fdb7dbee89b299f2.tar.xz linux-4fbb0022cba37eef4a263183fdb7dbee89b299f2.zip | |
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 'drivers/gpio/gpio-wm8994.c')
0 files changed, 0 insertions, 0 deletions