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(parent: ae74961) | patch
gpiolib: request the gpio before querying its direction
authorTimur Tabi <timur@codeaurora.org>
Thu, 27 Jul 2017 18:19:23 +0000 (13:19 -0500)
committerLinus Walleij <linus.walleij@linaro.org>
Mon, 14 Aug 2017 13:01:12 +0000 (15:01 +0200)
commitaf2c666fd878b31ef5903670ea974b390620debe
treeb11bd287e24c911d7e1b048de232a02431c43259tree | snapshot
parentae74961be6da0f07771464de272a3426cd2e7938commit | diff
gpiolib: request the gpio before querying its direction

Before querying a GPIO to determine its direction, the GPIO should be
formally requested.  This allows the GPIO driver to block access to
unavailable GPIOs, which makes it easier for some drivers to support
sparse GPIO maps.

Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drivers/gpio/gpiolib.c diff | blob | history
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