On Fri, Feb 07, 2014 at 01:11:49PM +0900, Jingoo Han wrote:
> On Friday, February 07, 2014 11:36 AM, Peter Chen wrote:
> > On Wed, Feb 05, 2014 at 10:30:35AM +0900, Jingoo Han wrote:
> > > Use the wrapper function for retrieving the platform data instead
> > > of accessing dev->platform_data directly. This is a cosmetic change
> > > to make the code simpler and enhance the readability.
> > >
> > > Signed-off-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
> > > ---
> > > drivers/usb/chipidea/core.c | 4 ++--
> > > 1 file changed, 2 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> > > index 33f22bc..2fab79d 100644
> > > --- a/drivers/usb/chipidea/core.c
> > > +++ b/drivers/usb/chipidea/core.c
> > > @@ -532,7 +532,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
> > > int ret;
> > > enum usb_dr_mode dr_mode;
> > >
> > > - if (!dev->platform_data) {
> > > + if (!dev_get_platdata(dev)) {
> > > dev_err(dev, "platform data missing\n");
> > > return -ENODEV;
> > > }
> >
> > Thanks for reviewing/patching code.
> >
> > If dev_get_platdata(dev) gets error, the platform device will not be created,
> > thus, the probe will not be called. The dev_get_platdata is called
> > before platform device is created.
> >
> > > @@ -549,7 +549,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
> > > }
> > >
> > > ci->dev = dev;
> > > - ci->platdata = dev->platform_data;
> > > + ci->platdata = dev_get_platdata(dev);
> > > ci->imx28_write_fix = !!(ci->platdata->flags &
> > > CI_HDRC_IMX28_WRITE_FIX);
> > >
> >
> > The return value of dev_get_platdata is not platform data.
> > In fact, the dev->platform_data has already filled by dev_get_platdata.
>
> Sorry, but I cannot understand what you mean. :-(
> Did you look at dev_get_platdata(dev)?
>
> ./include/linux/device.h
> static inline void *dev_get_platdata(const struct device *dev)
> {
> return dev->platform_data;
> }
>
> There is no functional change. This is just a cosmetic change.
> 'dev_get_platdata(dev)' and 'dev->platform_data' are the same.
>
> Best regards,
> Jingoo Han
>
>
Sorry, there is a internal function ci_get_platdata, I thought
you had used that.
--
Best Regards,
Peter Chen
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