linux-kernel - Re: [PATCH v2 4/4] drm/mipi-dsi: Drop MIPI_DSI_MODE_VSYNC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <7b564815-c9e0-435c-bd77-63da42aabacb@linaro.org>
Date: Mon, 30 Jun 2025 17:39:06 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Philipp Zabel <p.zabel@...gutronix.de>, Inki Dae <inki.dae@...sung.com>,
 Jagan Teki <jagan@...rulasolutions.com>,
 Marek Szyprowski <m.szyprowski@...sung.com>,
 Andrzej Hajda <andrzej.hajda@...el.com>, Robert Foss <rfoss@...nel.org>,
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.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>,
 Artur Weber <aweber.kernel@...il.com>,
 Jessica Zhang <quic_jesszhan@...cinc.com>,
 Jessica Zhang <jessica.zhang@....qualcomm.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 kernel@...gutronix.de
Subject: Re: [PATCH v2 4/4] drm/mipi-dsi: Drop MIPI_DSI_MODE_VSYNC_FLUSH flag

On 27/06/2025 13:45, Philipp Zabel wrote:
> Drop the unused MIPI_DSI_MODE_VSYNC_FLUSH flag. Whether or not a display
> FIFO flush on vsync is required to avoid sending garbage to the panel is
> not a property of the DSI link, but of the integration between display
> controller and DSI host bridge.
> 
> Acked-by: Marek Szyprowski <m.szyprowski@...sung.com>
> Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
> ---
>   include/drm/drm_mipi_dsi.h | 2 --
>   1 file changed, 2 deletions(-)
> 
> diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
> index b37860f4a895c25ef8ba1c5b3f44827ef53aa100..369b0d8830c3d14a4fc1e8e38d5fa55f04ca143e 100644
> --- a/include/drm/drm_mipi_dsi.h
> +++ b/include/drm/drm_mipi_dsi.h
> @@ -130,8 +130,6 @@ struct mipi_dsi_host *of_find_mipi_dsi_host_by_node(struct device_node *node);
>   #define MIPI_DSI_MODE_VIDEO_NO_HBP	BIT(6)
>   /* disable hsync-active area */
>   #define MIPI_DSI_MODE_VIDEO_NO_HSA	BIT(7)
> -/* flush display FIFO on vsync pulse */
> -#define MIPI_DSI_MODE_VSYNC_FLUSH	BIT(8)
>   /* disable EoT packets in HS mode */
>   #define MIPI_DSI_MODE_NO_EOT_PACKET	BIT(9)
>   /* device supports non-continuous clock behavior (DSI spec 5.6.1) */
> 

Acked-by: Neil Armstrong <neil.armstrong@...aro.org>