On Thu, Aug 07, 2025 at 08:58:01AM +0200, Hans Verkuil wrote:
> On 02/08/2025 11:23, Jacopo Mondi wrote:
> > The __fh parameter is assigned to an unsued variable. Remove it
> > and remove the unused struct zoran_fh type.
> >
> > Signed-off-by: Jacopo Mondi <jacopo.mo...@ideasonboard.com>
> > ---
> > drivers/media/pci/zoran/zoran.h | 6 ------
> > drivers/media/pci/zoran/zoran_driver.c | 3 +--
> > 2 files changed, 1 insertion(+), 8 deletions(-)
> >
> > diff --git a/drivers/media/pci/zoran/zoran.h
> > b/drivers/media/pci/zoran/zoran.h
> > index
> > 1cd990468d3de9db8b14b72483972041c57bfee2..d05e222b392156bf1b3b4c83c6591db642c3c377
> > 100644
> > --- a/drivers/media/pci/zoran/zoran.h
> > +++ b/drivers/media/pci/zoran/zoran.h
> > @@ -154,12 +154,6 @@ struct zoran_jpg_settings {
> >
> > struct zoran;
> >
> > -/* zoran_fh contains per-open() settings */
> > -struct zoran_fh {
> > - struct v4l2_fh fh;
> > - struct zoran *zr;
> > -};
> > -
> > struct card_info {
> > enum card_type type;
> > char name[32];
> > diff --git a/drivers/media/pci/zoran/zoran_driver.c
> > b/drivers/media/pci/zoran/zoran_driver.c
> > index
> > f42f596d3e6295e31e3b33cd83c5f7243911bd30..ec7fc1da4cc02f5a344cb49bb9a783c41c758195
> > 100644
> > --- a/drivers/media/pci/zoran/zoran_driver.c
> > +++ b/drivers/media/pci/zoran/zoran_driver.c
> > @@ -511,12 +511,11 @@ static int zoran_s_fmt_vid_cap(struct file *file,
> > void *__fh,
>
> This driver uses __fh as the name for the second argument of the ioctl
> callbacks. Can you take this opportunity to rename it to either 'fh' or
> 'priv'?
It's a bit of yak shaving, but not too difficult so it will be addressed
in the next version (Jacopo already wrote the patches, thanks).
> Generally it's not a good idea to prefix variables with __ for no good reason.
>
> Grepping for __fh also shows two other drivers:
>
> drivers/media/platform/chips-media/coda/coda-common.c:#define fh_to_ctx(__fh)
> container_of(__fh, struct coda_ctx, fh)
> drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h:#define
> fh_to_ctx(__fh) container_of(__fh, struct s5p_mfc_ctx, fh)
>
> I think it is a good idea to rename __fh to fh there as well.
That can't be done, otherwise things like
#define fh_to_ctx(fh) container_of(fh, struct coda_ctx, fh)
static inline struct coda_ctx *file_to_ctx(struct file *filp)
{
return fh_to_ctx(file_to_v4l2_fh(filp));
}
will expand in the file_to_ctx() function to
return container_of(file_to_v4l2_fh(filp), struct coda_ctx,
file_to_v4l2_fh(filp))
We could rename the __fh argument to vfh or v4l2fh, but I think __fh is
equally good there. It's just the macro argument name.
> > struct v4l2_format *fmt)
> > {
> > struct zoran *zr = video_drvdata(file);
> > - struct zoran_fh *fh = __fh;
> > int i;
> > int res = 0;
> >
> > if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG)
> > - return zoran_s_fmt_vid_out(file, fh, fmt);
> > + return zoran_s_fmt_vid_out(file, __fh, fmt);
> >
> > for (i = 0; i < NUM_FORMATS; i++)
> > if (fmt->fmt.pix.pixelformat == zoran_formats[i].fourcc)
--
Regards,
Laurent Pinchart
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