From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Ivan T. Ivanov" <iivanov@mm-sol.com>
Subject: Re: [PATCH v2 2/4] pinctrl: qpnp: Qualcomm PMIC pin controller
 driver
Date: Mon, 21 Jul 2014 19:16:16 +0300
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To: divya ojha <odivya77@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>, Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org>, Grant Likely <grant.likely@linaro.org>, Bjorn Andersson <bjorn.andersson@sonymobile.com>, Mark Brown <broonie@kernel.org>, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org

On Mon, 2014-07-21 at 21:32 +0530, divya ojha wrote:
> Hi,
> 
> On Thu, Jul 17, 2014 at 8:55 PM, Ivan T. Ivanov <iivanov@mm-sol.com> wrote:
> > From: "Ivan T. Ivanov" <iivanov@mm-sol.com>
> >
> > This is the pinctrl, pinmux, pinconf and gpiolib driver for the
> > Qualcomm GPIO and MPP sub-function blocks found in the PMIC chips.
> >
> > Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
> > ---
> >  drivers/pinctrl/Kconfig                       |   12 +
> >  drivers/pinctrl/Makefile                      |    1 +
> >  drivers/pinctrl/pinctrl-qpnp.c                | 1565 +++++++++++++++++++++++++
> >  include/dt-bindings/pinctrl/qcom,pm8xxx-mpp.h |   34 +
> ..
> +       struct device *dev = qctrl->dev;
> > +       struct pinctrl_pin_desc *desc, *descs;
> > +       struct qpnp_padinfo *pad, *pads;
> > +       int idx, ret, cnt, gps, ais, aos, css;
> > +       const char **names, *format;
> > +       unsigned int addr;
> > +
> > +       pads = devm_kcalloc(dev, qchip->npads, sizeof(*pads), GFP_KERNEL);
> 
> when do we free these structures..?

Good description could be found here[1].

Regards,
Ivan

[1] Documentation/driver-model/devres.txt