[Outreachy kernel] [PATCH] gpu: drm: Use list_{next/prev}_entry instead of list_entry

[Daniel Vetter]

On Mon, Mar 19, 2018 at 10:35:30AM +0530, Arushi Singhal wrote:
> This patch replace list_entry with list_{next/prev}_entry as it makes
> the code more clear to read.
> Done using coccinelle:
> 
> @@
> expression e1;
> identifier e3;
> type t;
> @@
> (
> - list_entry(e1->e3.next,t,e3)
> + list_next_entry(e1,e3)
> |
> - list_entry(e1->e3.prev,t,e3)
> + list_prev_entry(e1,e3)
> )
> 
> Signed-off-by: Arushi Singhal <arushisinghal19971997 at gmail.com>

Thanks for your patch. Looks correct, but for merge technical reasons can
you please split it into 2 patches? One for drm_lease.c, with a drm/lease:
prefix, and one for the nouveau driver change, with a nouveau: prefix.
Both patches need to be submitted to slightly different sets of
maintainers too, pls consult scripts/get_maintainers.pl

Thanks, Daniel

> ---
>  drivers/gpu/drm/drm_lease.c                    | 2 +-
>  drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> 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);
>  		}
>  	}
>  }
> 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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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch