From: Linus Walleij <linus.walleij@linaro.org>
Subject: Re: [PATCH 000/102] Convert drivers to explicit reset API
Date: Sun, 23 Jul 2017 20:41:48 +0200
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Cc: Philipp Zabel <p.zabel@pengutronix.de>,
        Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
        lkml <linux-kernel@vger.kernel.org>,
        Andrew Lunn <andrew@lunn.ch>,
        Prashant Gaikwad <pgaikwad@nvidia.com>,
        Heiko Stuebner <heiko@sntech.de>,
        Peter Chen <Peter.Chen@nxp.com>,
        DRI <dri-devel@lists.freedesktop.org>,
        Marc Dietrich <marvin24@gmx.de>,
        Rakesh Iyer <riyer@nvidia.com>,
        Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
        linux-clk <linux-clk@vger.kernel.org>,
        Wim Van Sebroeck <wim@iguana.be>,
        Wolfram Sang <wsa@the-dreams.de>,
        Xinliang Liu <z.liuxinliang@hisilicon.com>,
        Chanwoo Choi <cw00.choi@samsung.com>,
        Alan Stern <stern@rowland.harvard.edu>,
        Jiri Slaby <jslaby@suse.com>,
        Michael Turquette <mturquette@baylibre.com>,
        Guenter Roeck <linux@r
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
In-Reply-To: <CAKdAkRTx8jd8UToz5_EgMmdW3V47i2uo++YvVB_yzytqSA=P1Q@mail.gmail.com>
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On Thu, Jul 20, 2017 at 10:46 PM, Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
> On Thu, Jul 20, 2017 at 5:55 AM, Philipp Zabel <p.zabel@pengutronix.de> wrote:

>>> What about reset_control_get(struct device *, const char *, int flags)
>>> to replace all those variants ?
>>
>> While I like how this looks, unfortunately (devm_)reset_control_get
>> already exists without the flags, so we can't change to that with a
>> gentle transition.
>
> This was done for gpiod_get() and its flags argument with horrifying
> #define-ry, which thankfully was completely hidden from users.

For your reference:

commit bae48da237fcedd7ad09569025483b988635efb7
"gpiolib: add gpiod_get() and gpiod_put() functions"

commit 39b2bbe3d715cf5013b5c48695ccdd25bd3bf120
"gpio: add flags argument to gpiod_get*() functions"

commit 0dbc8b7afef6e4fddcfebcbacbeb269a0a3b06d5
"gpio: move varargs hack outside #ifdef GPIOLIB"

commit b17d1bf16cc72a374a48d748940f700009d40ff4
"gpio: make flags mandatory for gpiod_get functions"

Retrospectively ... was that really a good idea... it was a LOT
of trouble to add a flag, maybe it had been better to try and
just slam all users in a single go.

But it worked.

Yours,
Linus Walleij