Re: [PATCH] drm/panthor: Kill the faulty_slots variable in panthor_sched_suspend()

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On Thu, 2024-04-25 at 12:39 +0200, Boris Brezillon wrote:
> We can use upd_ctx.timedout_mask directly, and the faulty_slots
> update
> in the flush_caches_failed situation is never used.
> 
> Suggested-by: Suggested-by: Steven Price <steven.price@xxxxxxx>

Whoops? :)

> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/panthor/panthor_sched.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panthor/panthor_sched.c
> b/drivers/gpu/drm/panthor/panthor_sched.c
> index fad4678ca4c8..fed28c16d5d1 100644
> --- a/drivers/gpu/drm/panthor/panthor_sched.c
> +++ b/drivers/gpu/drm/panthor/panthor_sched.c
> @@ -2584,8 +2584,8 @@ void panthor_sched_suspend(struct
> panthor_device *ptdev)
>  {
>  	struct panthor_scheduler *sched = ptdev->scheduler;
>  	struct panthor_csg_slots_upd_ctx upd_ctx;
> -	u32 suspended_slots, faulty_slots;
>  	struct panthor_group *group;
> +	u32 suspended_slots;
>  	u32 i;
>  
>  	mutex_lock(&sched->lock);
> @@ -2605,10 +2605,9 @@ void panthor_sched_suspend(struct
> panthor_device *ptdev)
>  
>  	csgs_upd_ctx_apply_locked(ptdev, &upd_ctx);
>  	suspended_slots &= ~upd_ctx.timedout_mask;
> -	faulty_slots = upd_ctx.timedout_mask;
>  
> -	if (faulty_slots) {
> -		u32 slot_mask = faulty_slots;
> +	if (upd_ctx.timedout_mask) {
> +		u32 slot_mask = upd_ctx.timedout_mask;
>  
>  		drm_err(&ptdev->base, "CSG suspend failed,
> escalating to termination");
>  		csgs_upd_ctx_init(&upd_ctx);
> @@ -2659,9 +2658,6 @@ void panthor_sched_suspend(struct
> panthor_device *ptdev)
>  
>  			slot_mask &= ~BIT(csg_id);
>  		}
> -
> -		if (flush_caches_failed)
> -			faulty_slots |= suspended_slots;
>  	}
>  
>  	for (i = 0; i < sched->csg_slot_count; i++) {





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