linux-kernel - Re: [PATCH v4 2/5] drm: adp: Add Apple Display Pipe driver

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20250116-vivacious-congenial-nightingale-cb2f6d@houat>
Date: Thu, 16 Jan 2025 17:01:03 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: fnkl.kernel@...il.com, Hector Martin <marcan@...can.st>, 
	Sven Peter <sven@...npeter.dev>, Alyssa Rosenzweig <alyssa@...enzweig.io>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Thomas Zimmermann <tzimmermann@...e.de>, 
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Neil Armstrong <neil.armstrong@...aro.org>, Jessica Zhang <quic_jesszhan@...cinc.com>, asahi@...ts.linux.dev, 
	linux-arm-kernel@...ts.infradead.org, dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Alyssa Ross <hi@...ssa.is>, Janne Grunau <j@...nau.net>
Subject: Re: [PATCH v4 2/5] drm: adp: Add Apple Display Pipe driver

Hi Dmitry,

On Wed, Jan 15, 2025 at 12:21:39PM +0200, Dmitry Baryshkov wrote:
> On Tue, Jan 14, 2025 at 10:38:53PM +0100, Sasha Finkelstein via B4 Relay wrote:
> > +static int adp_dsi_host_attach(struct mipi_dsi_host *host,
> > +			       struct mipi_dsi_device *dev)
> > +{
> > +	struct adp_mipi_drv_private *adp = mipi_to_adp(host);
> > +	struct drm_bridge *next;
> > +
> > +	next = devm_drm_of_get_bridge(adp->dsi.dev, adp->dsi.dev->of_node, 1, 0);
> 
> select DRM_PANEL_BRIDGE for this API to be available.
> Also there is an issue of lifetimes. The bridge will be destroyed only
> when MIPI driver is unbound, however the panel can be attached and
> detached several times.

Can you expand on that one a bit more? AFAIK, it's always been unsafe
and we don't have a good mitigation at the moment, so it's unclear to me
what change you want here.

Maxime

Download attachment "signature.asc" of type "application/pgp-signature" (274 bytes)