Re: [PATCH] nouveau: Remove unused functions

Lyude Paul
2024-11-22T19:59:23Z

Thanks for the ping! The patch looks fine to me but I'm not sure if we would
want to remove something like this, or just comment it out with #if 0. Ben, do
you have any particular feelings on this?

On Fri, 2024-11-22 at 02:02 +0000, Dr. David Alan Gilbert wrote:
> * linux@treblig.org (linux@treblig.org) wrote:
> > From: "Dr. David Alan Gilbert" <linux@treblig.org>
> >
> > dcb_outp_match() last use was removed in 2017 in
> > commit 99a845a30f62 ("drm/nouveau/disp/nv50-gt21x: remove workaround for
> > dp->tmds hotplug issues")
> >
> > dcb_xpio_parse was added in 2012 in
> > commit 112a12aab8a5 ("drm/nouveau/bios: add support for parsing xpio table
> > data")
> > but never used.
> >
> > Remove them.
> >
> > dcb_xpio_parse was the last user of struct nvbios_xpio, so remove it
> > as well and the FLAG #defines.
> >
> > Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
>
> Ping.
>
> Thanks,
>
> Dave
>
> > ---
> > .../gpu/drm/nouveau/include/nvkm/subdev/bios/dcb.h | 2 --
> > .../drm/nouveau/include/nvkm/subdev/bios/xpio.h | 12 ------------
> > drivers/gpu/drm/nouveau/nvkm/subdev/bios/dcb.c | 14 --------------
> > drivers/gpu/drm/nouveau/nvkm/subdev/bios/xpio.c | 13 -------------
> > 4 files changed, 41 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/dcb.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/dcb.h
> > index 73f9d9947e7e..12e6b2f21564 100644
> > --- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/dcb.h
> > +++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/dcb.h
> > @@ -61,8 +61,6 @@ u16 dcb_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *ent, u8 *len);
> > u16 dcb_outp(struct nvkm_bios *, u8 idx, u8 *ver, u8 *len);
> > u16 dcb_outp_parse(struct nvkm_bios *, u8 idx, u8 *, u8 *,
> > struct dcb_output *);
> > -u16 dcb_outp_match(struct nvkm_bios *, u16 type, u16 mask, u8 *, u8 *,
> > - struct dcb_output *);
> > int dcb_outp_foreach(struct nvkm_bios *, void *data, int (*exec)
> > (struct nvkm_bios *, void *, int index, u16 entry));
> > #endif
> > diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/xpio.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/xpio.h
> > index 11b4c4d27e5f..cd0ffebcb73a 100644
> > --- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/xpio.h
> > +++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/xpio.h
> > @@ -2,18 +2,6 @@
> > #ifndef __NVBIOS_XPIO_H__
> > #define __NVBIOS_XPIO_H__
> >
> > -#define NVBIOS_XPIO_FLAG_AUX 0x10
> > -#define NVBIOS_XPIO_FLAG_AUX0 0x00
> > -#define NVBIOS_XPIO_FLAG_AUX1 0x10
> > -
> > -struct nvbios_xpio {
> > - u8 type;
> > - u8 addr;
> > - u8 flags;
> > -};
> > -
> > u16 dcb_xpio_table(struct nvkm_bios *, u8 idx,
> > u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
> > -u16 dcb_xpio_parse(struct nvkm_bios *, u8 idx,
> > - u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_xpio *);
> > #endif
> > diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dcb.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dcb.c
> > index 8698f260b988..ae1faa63d68f 100644
> > --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dcb.c
> > +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dcb.c
> > @@ -193,20 +193,6 @@ dcb_outp_parse(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len,
> > return dcb;
> > }
> >
> > -u16
> > -dcb_outp_match(struct nvkm_bios *bios, u16 type, u16 mask,
> > - u8 *ver, u8 *len, struct dcb_output *outp)
> > -{
> > - u16 dcb, idx = 0;
> > - while ((dcb = dcb_outp_parse(bios, idx++, ver, len, outp))) {
> > - if ((dcb_outp_hasht(outp) & 0x00ff) == (type & 0x00ff)) {
> > - if ((dcb_outp_hashm(outp) & mask) == mask)
> > - break;
> > - }
> > - }
> > - return dcb;
> > -}
> > -
> > int
> > dcb_outp_foreach(struct nvkm_bios *bios, void *data,
> > int (*exec)(struct nvkm_bios *, void *, int, u16))
> > diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/xpio.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/xpio.c
> > index 250fc42d8608..a47393e90de9 100644
> > --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/xpio.c
> > +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/xpio.c
> > @@ -59,16 +59,3 @@ dcb_xpio_table(struct nvkm_bios *bios, u8 idx,
> > }
> > return 0x0000;
> > }
> > -
> > -u16
> > -dcb_xpio_parse(struct nvkm_bios *bios, u8 idx,
> > - u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_xpio *info)
> > -{
> > - u16 data = dcb_xpio_table(bios, idx, ver, hdr, cnt, len);
> > - if (data && *len >= 6) {
> > - info->type = nvbios_rd08(bios, data + 0x04);
> > - info->addr = nvbios_rd08(bios, data + 0x05);
> > - info->flags = nvbios_rd08(bios, data + 0x06);
> > - }
> > - return 0x0000;
> > -}
> > --
> > 2.47.0
> >

--
Cheers,
Lyude Paul (she/her)
Software Engineer at Red Hat

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