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Dmitry Osipenko f78709a5d4 gpio: tegra: Fix tegra_gpio_irq_set_type() 
Commit 36b312792b ("gpiolib: Respect error code of ->get_direction()")
broke tegra_gpio_irq_set_type() because requesting of GPIO direction must
be done after enabling GPIO function for a pin.

This patch fixes drivers probe failure like this:

 gpio gpiochip0: (tegra-gpio): gpiochip_lock_as_irq: cannot get GPIO direction
 tegra-gpio 6000d000.gpio: unable to lock Tegra GPIO 144 as IRQ

Fixes: 36b312792b ("gpiolib: Respect error code of ->get_direction()")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
History 2018-07-29 22:38:35 +02:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.