[PATCH v2 0/2] drm: Replace list_entry

[PATCH v2 0/2] drm: Replace list_entry

[Arushi Singhal]

Replace list_entry with list_{next/prev}_entry.

Arushi Singhal (2):
  gpu: drm/lease:: Use list_{next/prev}_entry instead of list_entry
  gpu: drm: nouveau: Use list_{next/prev}_entry instead of list_entry

 drivers/gpu/drm/drm_lease.c                    | 2 +-
 drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

-- 
changes in v2
*All the maintainers are added.
*More accurate coccinelle script is used
for this patch than the one used in previous version.
2.7.4

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[PATCH v2 1/2] gpu: drm/lease:: Use list_{next/prev}_entry instead of list_entry

[Arushi Singhal]

It's better to use list_entry instead of list_{next/prev}_entry
as it makes the code more clear to read.
This patch replace list_entry with list_{next/prev}_entry.

Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
---
 drivers/gpu/drm/drm_lease.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_lease.c b/drivers/gpu/drm/drm_lease.c
index 1402c0e..4dcfb5f 100644
--- a/drivers/gpu/drm/drm_lease.c
+++ b/drivers/gpu/drm/drm_lease.c
@@ -340,7 +340,7 @@ static void _drm_lease_revoke(struct drm_master *top)
 				break;
 
 			/* Over */
-			master = list_entry(master->lessee_list.next, struct drm_master, lessee_list);
+			master = list_next_entry(master, lessee_list);
 		}
 	}
 }
-- 
2.7.4

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Re: [PATCH v2 1/2] gpu: drm/lease:: Use list_{next/prev}_entry instead of list_entry

[Daniel Vetter]

On Sun, Mar 25, 2018 at 11:31:32PM +0530, Arushi Singhal wrote:
> It's better to use list_entry instead of list_{next/prev}_entry
> as it makes the code more clear to read.
> This patch replace list_entry with list_{next/prev}_entry.
> 
> Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>

Applied to drm-misc-next, thanks for your patch. I'll leave the other one
to nouveau folks.
-Daniel

> ---
>  drivers/gpu/drm/drm_lease.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/drm_lease.c b/drivers/gpu/drm/drm_lease.c
> index 1402c0e..4dcfb5f 100644
> --- a/drivers/gpu/drm/drm_lease.c
> +++ b/drivers/gpu/drm/drm_lease.c
> @@ -340,7 +340,7 @@ static void _drm_lease_revoke(struct drm_master *top)
>  				break;
>  
>  			/* Over */
> -			master = list_entry(master->lessee_list.next, struct drm_master, lessee_list);
> +			master = list_next_entry(master, lessee_list);
>  		}
>  	}
>  }
> -- 
> 2.7.4
> 
> _______________________________________________
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> Nouveau@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/nouveau

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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[PATCH v2 2/2] gpu: drm: nouveau: Use list_{next/prev}_entry instead of list_entry

[Arushi Singhal]

It's better to use list_entry instead of list_{next/prev}_entry
as it makes the code more clear to read.
This patch replace list_entry with list_{next/prev}_entry.

Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
index e4c8d31..81c3567 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
@@ -134,7 +134,7 @@ nvkm_cstate_find_best(struct nvkm_clk *clk, struct nvkm_pstate *pstate,
 			       nvkm_volt_map(volt, volt->max2_id, clk->temp));
 
 	for (cstate = start; &cstate->head != &pstate->list;
-	     cstate = list_entry(cstate->head.prev, typeof(*cstate), head)) {
+	     cstate = list_prev_entry(cstate, head)) {
 		if (nvkm_cstate_valid(clk, cstate, max_volt, clk->temp))
 			break;
 	}
-- 
2.7.4

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Re: [PATCH v2 2/2] gpu: drm: nouveau: Use list_{next/prev}_entry instead of list_entry

[Ben Skeggs]

On Mon, Mar 26, 2018 at 4:01 AM, Arushi Singhal
<arushisinghal19971997@gmail.com> wrote:
> It's better to use list_entry instead of list_{next/prev}_entry
> as it makes the code more clear to read.
> This patch replace list_entry with list_{next/prev}_entry.
>
> Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>

> ---
>  drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
> index e4c8d31..81c3567 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
> @@ -134,7 +134,7 @@ nvkm_cstate_find_best(struct nvkm_clk *clk, struct nvkm_pstate *pstate,
>                                nvkm_volt_map(volt, volt->max2_id, clk->temp));
>
>         for (cstate = start; &cstate->head != &pstate->list;
> -            cstate = list_entry(cstate->head.prev, typeof(*cstate), head)) {
> +            cstate = list_prev_entry(cstate, head)) {
>                 if (nvkm_cstate_valid(clk, cstate, max_volt, clk->temp))
>                         break;
>         }
> --
> 2.7.4
>
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Re: [PATCH v2 2/2] gpu: drm: nouveau: Use list_{next/prev}_entry instead of list_entry

[Chris Wilson]

Quoting Ben Skeggs (2018-03-26 13:34:54)
> On Mon, Mar 26, 2018 at 4:01 AM, Arushi Singhal
> <arushisinghal19971997@gmail.com> wrote:
> > It's better to use list_entry instead of list_{next/prev}_entry
> > as it makes the code more clear to read.
> > This patch replace list_entry with list_{next/prev}_entry.
> >
> > Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
> Acked-by: Ben Skeggs <bskeggs@redhat.com>
> 
> > ---
> >  drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
> > index e4c8d31..81c3567 100644
> > --- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
> > +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
> > @@ -134,7 +134,7 @@ nvkm_cstate_find_best(struct nvkm_clk *clk, struct nvkm_pstate *pstate,
> >                                nvkm_volt_map(volt, volt->max2_id, clk->temp));
> >
> >         for (cstate = start; &cstate->head != &pstate->list;
> > -            cstate = list_entry(cstate->head.prev, typeof(*cstate), head)) {
> > +            cstate = list_prev_entry(cstate, head)) {

This loop could be written as:

	cstate = start; /* cstate looks redundant here, just use start? */
	list_for_each_entry_from_reverse(cstate, &pstate->list, head)

> >                 if (nvkm_cstate_valid(clk, cstate, max_volt, clk->temp))
> >                         break;
> >         }
> > --
> > 2.7.4
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Re: [PATCH v2 2/2] gpu: drm: nouveau: Use list_{next/prev}_entry instead of list_entry

[Daniel Vetter]

On Mon, Mar 26, 2018 at 01:43:30PM +0100, Chris Wilson wrote:
> Quoting Ben Skeggs (2018-03-26 13:34:54)
> > On Mon, Mar 26, 2018 at 4:01 AM, Arushi Singhal
> > <arushisinghal19971997@gmail.com> wrote:
> > > It's better to use list_entry instead of list_{next/prev}_entry
> > > as it makes the code more clear to read.
> > > This patch replace list_entry with list_{next/prev}_entry.
> > >
> > > Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
> > Acked-by: Ben Skeggs <bskeggs@redhat.com>

Applied, thanks for ack&patch.

> > 
> > > ---
> > >  drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
> > > index e4c8d31..81c3567 100644
> > > --- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
> > > +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
> > > @@ -134,7 +134,7 @@ nvkm_cstate_find_best(struct nvkm_clk *clk, struct nvkm_pstate *pstate,
> > >                                nvkm_volt_map(volt, volt->max2_id, clk->temp));
> > >
> > >         for (cstate = start; &cstate->head != &pstate->list;
> > > -            cstate = list_entry(cstate->head.prev, typeof(*cstate), head)) {
> > > +            cstate = list_prev_entry(cstate, head)) {
> 
> This loop could be written as:
> 
> 	cstate = start; /* cstate looks redundant here, just use start? */
> 	list_for_each_entry_from_reverse(cstate, &pstate->list, head)

Yeah, sounds like a good follow-up patch.
-Daniel

> 
> > >                 if (nvkm_cstate_valid(clk, cstate, max_volt, clk->temp))
> > >                         break;
> > >         }
> > > --
> > > 2.7.4
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch