On Tue, Aug 20, 2019 at 08:24:06PM -0700, Moritz Fischer wrote:
> Hi,
>
> On Mon, Aug 12, 2019 at 10:49:56AM +0800, Wu Hao wrote:
> > This patch makes init callback of sub features optional. With
> > this change, people don't need to prepare any empty init callback.
> >
> > Signed-off-by: Wu Hao <hao...@intel.com>
>
> Acked-by: Moritz Fischer <m...@kernel.org>
> > ---
> > drivers/fpga/dfl.c | 10 ++++++----
> > 1 file changed, 6 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
> > index c0512af..96a2b82 100644
> > --- a/drivers/fpga/dfl.c
> > +++ b/drivers/fpga/dfl.c
> > @@ -271,11 +271,13 @@ static int dfl_feature_instance_init(struct
> > platform_device *pdev,
> > struct dfl_feature *feature,
> > struct dfl_feature_driver *drv)
> > {
> > - int ret;
> > + int ret = 0;
> >
> > - ret = drv->ops->init(pdev, feature);
> > - if (ret)
> > - return ret;
> > + if (drv->ops->init) {
> > + ret = drv->ops->init(pdev, feature);
> > + if (ret)
> > + return ret;
> > + }
> >
> > feature->ops = drv->ops;
>
> You could swap it around maybe like so:
>
> int dfl_feature_instance_init() ...
> {
> feature->ops = drv->ops;
> if (drv->ops->init)
> return drv->ops->init(pdev, feature);
>
> return 0;
> }
>
> With the caveat that feature->ops gets always set ...
>
> Your call.
Hi Moritz,
Thanks a lot for the review and comments. It does simplify the code,
will modify it.
Thanks
Hao
>
> Thanks,
> Moritz
