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From: Liviu Dudau <liviu.dudau@arm.com>
To: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Steven Price <steven.price@arm.com>,
	Chia-I Wu <olvaffe@gmail.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 5/9] drm/panthor: Get rid of panthor_group::fatal_lock
Date: Tue, 18 Aug 2026 18:09:23 +0100	[thread overview]
Message-ID: <aoSRw6GjoU8mrugw@e142607> (raw)
In-Reply-To: <20260811-panthor-signal-from-irq-v6-5-12f2ab53d735@collabora.com>

On Tue, Aug 11, 2026 at 01:23:39PM +0200, Boris Brezillon wrote:
> This lock is never used, and we're about to make fatal_queues an
> atomic to cope with concurrent updates.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>

Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>

Best regards,
Liviu

> ---
>  drivers/gpu/drm/panthor/panthor_sched.c | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c
> index baa06731797c..9adf1e21eb83 100644
> --- a/drivers/gpu/drm/panthor/panthor_sched.c
> +++ b/drivers/gpu/drm/panthor/panthor_sched.c
> @@ -565,9 +565,6 @@ struct panthor_group {
>  	/** @idle_queues: Bitmask reflecting the idle queues. */
>  	u32 idle_queues;
>  
> -	/** @fatal_lock: Lock used to protect access to fatal fields. */
> -	spinlock_t fatal_lock;
> -
>  	/** @fatal_queues: Bitmask reflecting the queues that hit a fatal exception. */
>  	u32 fatal_queues;
>  
> @@ -3675,7 +3672,6 @@ int panthor_group_create(struct panthor_file *pfile,
>  	if (!group)
>  		return -ENOMEM;
>  
> -	spin_lock_init(&group->fatal_lock);
>  	kref_init(&group->refcount);
>  	group->state = PANTHOR_CS_GROUP_CREATED;
>  	group->csg_id = -1;
> 
> -- 
> 2.55.0
> 

-- 
====================
| I would like to |
| fix the world,  |
| but they're not |
| giving me the   |
 \ source code!  /
  ---------------
    ¯\_(ツ)_/¯

  parent reply	other threads:[~2026-08-18 17:09 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-11 11:23 [PATCH v6 0/9] drm/panthor: Reduce dma_fence signalling latency Boris Brezillon
2026-08-11 11:23 ` [PATCH v6 1/9] drm/panthor: Make panthor_irq::state a non-atomic field Boris Brezillon
2026-08-11 11:23 ` [PATCH v6 2/9] drm/panthor: Move the register accessors before the IRQ helpers Boris Brezillon
2026-08-11 11:23 ` [PATCH v6 3/9] drm/panthor: Replace the panthor_irq macro machinery by inline helpers Boris Brezillon
2026-08-18 17:08   ` Liviu Dudau
2026-08-11 11:23 ` [PATCH v6 4/9] drm/panthor: Don't update might_have_idle_groups in process_idle_event_locked() Boris Brezillon
2026-08-17 15:09   ` Steven Price
2026-08-18 17:08   ` Liviu Dudau
2026-08-11 11:23 ` [PATCH v6 5/9] drm/panthor: Get rid of panthor_group::fatal_lock Boris Brezillon
2026-08-17 15:12   ` Steven Price
2026-08-18 17:09   ` Liviu Dudau [this message]
2026-08-11 11:23 ` [PATCH v6 6/9] drm/panthor: Protect events processing with a separate spinlock Boris Brezillon
2026-08-17 15:21   ` Steven Price
2026-08-18 17:13   ` Liviu Dudau
2026-08-11 11:23 ` [PATCH v6 7/9] drm/panthor: Don't defer job completion checks Boris Brezillon
2026-08-17 15:29   ` Steven Price
2026-08-11 11:23 ` [PATCH v6 8/9] drm/panthor: Don't defer FW event processing Boris Brezillon
2026-08-17 15:35   ` Steven Price
2026-08-18 17:15   ` Liviu Dudau
2026-08-11 11:23 ` [PATCH v6 9/9] drm/panthor: Automate CSG IRQ processing at group unbind time Boris Brezillon
2026-08-18 17:20   ` Liviu Dudau

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