On Thu, Jul 27, 2017 at 8:19 PM, Timur Tabi [off-list ref] wrote:

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 <redacted>

This makes all kind of semantic change, so patch applied.

Yours,
Linus Walleij