linux-kernel - Re: [PATCH v2] drm/panthor: always set fence errors on CS

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Message-ID: <9a229053-3e2e-4de4-82b4-a0589d0e5003@arm.com>
Date: Thu, 18 Sep 2025 16:33:24 +0100
From: Steven Price <steven.price@....com>
To: Chia-I Wu <olvaffe@...il.com>,
 Boris Brezillon <boris.brezillon@...labora.com>,
 Liviu Dudau <liviu.dudau@....com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/panthor: always set fence errors on CS_FAULT

On 28/08/2025 21:04, Chia-I Wu wrote:
> It is unclear why fence errors were set only for CS_INHERIT_FAULT.
> Downstream driver also does not treat CS_INHERIT_FAULT specially.
> Remove the check.
> 
> Signed-off-by: Chia-I Wu <olvaffe@...il.com>
> Reviewed-by: Boris Brezillon <boris.brezillon@...labora.com>

Reviewed-by: Steven Price <steven.price@....com>

I'll push this to drm-misc-next.

Thanks,
Steve

> ---
> v2: add rb from Boris
> ---
>  drivers/gpu/drm/panthor/panthor_sched.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c
> index ba5dc3e443d9c..231f42c67f175 100644
> --- a/drivers/gpu/drm/panthor/panthor_sched.c
> +++ b/drivers/gpu/drm/panthor/panthor_sched.c
> @@ -1412,7 +1412,7 @@ cs_slot_process_fault_event_locked(struct panthor_device *ptdev,
>  	fault = cs_iface->output->fault;
>  	info = cs_iface->output->fault_info;
>  
> -	if (queue && CS_EXCEPTION_TYPE(fault) == DRM_PANTHOR_EXCEPTION_CS_INHERIT_FAULT) {
> +	if (queue) {
>  		u64 cs_extract = queue->iface.output->extract;
>  		struct panthor_job *job;
>