linux-kernel - Re: [PATCH 2/3] drm/vc4: Match drm_dev_enter and exit calls in vc4_hvs_atomic

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Message-ID: <6a78ccff-915b-4fc6-b677-1301e3d6993f@igalia.com>
Date: Tue, 8 Oct 2024 22:26:20 -0300
From: Maíra Canal <mcanal@...lia.com>
To: Dave Stevenson <dave.stevenson@...pberrypi.com>,
 Maxime Ripard <mripard@...nel.org>,
 Raspberry Pi Kernel Maintenance <kernel-list@...pberrypi.com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] drm/vc4: Match drm_dev_enter and exit calls in
 vc4_hvs_atomic_flush

Hi Dave,

On 10/8/24 13:44, Dave Stevenson wrote:
> Commit 92c17d16476c ("drm/vc4: hvs: Ignore atomic_flush if we're disabled")
> added a path which returned early without having called drm_dev_exit.
> 
> Ensure all paths call drm_dev_exit.
> 
> Fixes: 92c17d16476c ("drm/vc4: hvs: Ignore atomic_flush if we're disabled")
> Signed-off-by: Dave Stevenson <dave.stevenson@...pberrypi.com>

With the same comment as PATCH 1/3,

Reviewed-by: Maíra Canal <mcanal@...lia.com>

Best Regards,
- Maíra

> ---
>   drivers/gpu/drm/vc4/vc4_hvs.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c
> index 546ee11016b2..c5ebc317188a 100644
> --- a/drivers/gpu/drm/vc4/vc4_hvs.c
> +++ b/drivers/gpu/drm/vc4/vc4_hvs.c
> @@ -603,7 +603,7 @@ void vc4_hvs_atomic_flush(struct drm_crtc *crtc,
>   	}
>   
>   	if (vc4_state->assigned_channel == VC4_HVS_CHANNEL_DISABLED)
> -		return;
> +		goto exit;
>   
>   	if (debug_dump_regs) {
>   		DRM_INFO("CRTC %d HVS before:\n", drm_crtc_index(crtc));
> @@ -686,6 +686,7 @@ void vc4_hvs_atomic_flush(struct drm_crtc *crtc,
>   		vc4_hvs_dump_state(hvs);
>   	}
>   
> +exit:
>   	drm_dev_exit(idx);
>   }
>   
>