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    SubjectRe: [PATCH 05/12] GPIO: gpio-generic: Add label to platform data
    On Tue, 2014-02-11 at 17:17 +0000, Lee Jones wrote:
    > > When registering more than one platform device, it is
    > > useful to set the gpio chip label in the platform data.
    > >
    > > Cc: Linus Walleij <linus.walleij@linaro.org>
    > > Cc: Alexandre Courbot <gnurou@gmail.com>
    > > Cc: Samuel Ortiz <sameo@linux.intel.com>
    > > Cc: Lee Jones <lee.jones@linaro.org>
    > > Signed-off-by: Pawel Moll <pawel.moll@arm.com>
    > > ---
    > > This patch has been already merged by Linux; it has been included
    > > for completeness only.
    > >
    > > drivers/gpio/gpio-generic.c | 2 ++
    > > include/linux/basic_mmio_gpio.h | 1 +
    > > 2 files changed, 3 insertions(+)
    > >
    > > diff --git a/drivers/gpio/gpio-generic.c b/drivers/gpio/gpio-generic.c
    > > index d2196bf..8c778af 100644
    > > --- a/drivers/gpio/gpio-generic.c
    > > +++ b/drivers/gpio/gpio-generic.c
    > > @@ -531,6 +531,8 @@ static int bgpio_pdev_probe(struct platform_device *pdev)
    > > return err;
    > >
    > > if (pdata) {
    > > + if (pdata->label)
    >
    > Why is this check necessary?
    >
    > > + bgc->gc.label = pdata->label;

    Because bgc->gc.label is initialized to a default value in bgpio_init()
    and I don't want to override it with NULL if there is no label passed in
    the platform data.

    Pawel

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