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SubjectRe: [PATCH 2/4] staging: vc04_services: avoid the use of typedef for function pointers
On Tue, Dec 21, 2021 at 07:19:45AM +0100, Greg KH wrote:
> On Mon, Dec 20, 2021 at 06:29:12PM -0300, Gaston Gonzalez wrote:
> > Replace typedef bm2835_mmal_v4l2_ctrl_cb with equivalent declaration to
> > better align with the linux kernel coding style.
> >
> > Signed-off-by: Gaston Gonzalez <gascoar@gmail.com>
> > ---
> > .../vc04_services/bcm2835-camera/controls.c | 76 +++++++++----------
> > 1 file changed, 35 insertions(+), 41 deletions(-)
> >
> > diff --git a/drivers/staging/vc04_services/bcm2835-camera/controls.c b/drivers/staging/vc04_services/bcm2835-camera/controls.c
> > index b096a12387f7..7782742396fc 100644
> > --- a/drivers/staging/vc04_services/bcm2835-camera/controls.c
> > +++ b/drivers/staging/vc04_services/bcm2835-camera/controls.c
> > @@ -65,13 +65,6 @@ enum bm2835_mmal_ctrl_type {
> > MMAL_CONTROL_TYPE_CLUSTER, /* special cluster entry */
> > };
> >
> > -struct bm2835_mmal_v4l2_ctrl;
> > -
> > -typedef int(bm2835_mmal_v4l2_ctrl_cb)(
> > - struct bm2835_mmal_dev *dev,
> > - struct v4l2_ctrl *ctrl,
> > - const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl);
>
> Function pointer typedefs are ok, if they are needed.
>
> > -
> > struct bm2835_mmal_v4l2_ctrl {
> > u32 id; /* v4l2 control identifier */
> > enum bm2835_mmal_ctrl_type type;
> > @@ -84,7 +77,8 @@ struct bm2835_mmal_v4l2_ctrl {
> > u64 step; /* step size of the control */
> > const s64 *imenu; /* integer menu array */
> > u32 mmal_id; /* mmal parameter id */
> > - bm2835_mmal_v4l2_ctrl_cb *setter;
> > + int (*bm2835_mmal_v4l2_ctrl_cb)(struct bm2835_mmal_dev *dev, struct v4l2_ctrl *ctrl,
> > + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl);
>
> No need to rename this function pointer, why not keep it at "setter"?
> That would make this patch much smaller and more obvious.
>

Ok, will do that in v2.

thanks,

Gaston


> thanks,
>
> greg k-h
>

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