From: Alexander Stein <alexander.stein@ew.tq-group.com>
To: Herve Codina <herve.codina@bootlin.com>
Cc: "Andrzej Hajda" <andrzej.hajda@intel.com>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Robert Foss" <rfoss@kernel.org>,
"Laurent Pinchart" <Laurent.pinchart@ideasonboard.com>,
"Jonas Karlman" <jonas@kwiboo.se>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>,
"David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Dave Stevenson" <dave.stevenson@raspberrypi.com>,
"Maíra Canal" <mcanal@igalia.com>,
"Raspberry Pi Kernel Maintenance" <kernel-list@raspberrypi.com>,
"Marek Vasut" <marex@denx.de>,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
"Louis Chauvet" <louis.chauvet@bootlin.com>,
"Luca Ceresoli" <luca.ceresoli@bootlin.com>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH v5 4/4] drm: bridge: ti-sn65dsi83: Add error recovery mechanism
Date: Thu, 06 Feb 2025 16:39:09 +0100 [thread overview]
Message-ID: <8756830.T7Z3S40VBb@steina-w> (raw)
In-Reply-To: <20250206162048.1f159ba6@bootlin.com>
Hi Herve,
Am Donnerstag, 6. Februar 2025, 16:20:48 CET schrieb Herve Codina:
> Hi Alexander,
>
> On Thu, 06 Feb 2025 15:38:42 +0100
> Alexander Stein <alexander.stein@ew.tq-group.com> wrote:
>
> ...
> > With interrupt configured I got the following stack trace upon
> > reboot/poweroff:
> >
> > [ 91.317264] sn65dsi83 2-002d: reset the pipe
> > [ 91.344093] Unable to handle ke
> > ** replaying previous printk message **
> > [ 91.344093] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
> ...
>
> Ouch :(
>
> One question to help me investigating:
> Do you have the issue at init/probe or when you start to display graphics?
This is during shutdown/poweroff. I assume that regmap_reg() in
sn65dsi83_handle_errors() fails and because of that reset_work is scheduled.
Best regards,
Alexander
--
TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
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next prev parent reply other threads:[~2025-02-06 15:39 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-03 16:16 [PATCH v5 0/4] Add support for errors recovery in the TI SN65DSI83 bridge driver Herve Codina
2025-02-03 16:16 ` [PATCH v5 1/4] dt-bindings: display: bridge: sn65dsi83: Add interrupt Herve Codina
2025-02-03 16:16 ` [PATCH v5 2/4] drm/atomic-helper: Introduce drm_atomic_helper_reset_crtc() Herve Codina
2025-02-03 17:31 ` Dmitry Baryshkov
2025-02-06 13:04 ` Maxime Ripard
2025-02-03 16:16 ` [PATCH v5 3/4] drm/vc4: hdmi: Use drm_atomic_helper_reset_crtc() Herve Codina
2025-02-03 17:31 ` Dmitry Baryshkov
2025-02-06 13:04 ` Maxime Ripard
2025-02-03 16:16 ` [PATCH v5 4/4] drm: bridge: ti-sn65dsi83: Add error recovery mechanism Herve Codina
2025-02-06 13:05 ` Maxime Ripard
2025-02-06 14:38 ` Alexander Stein
2025-02-06 15:20 ` Herve Codina
2025-02-06 15:39 ` Alexander Stein [this message]
2025-02-07 18:08 ` Herve Codina
2025-02-10 10:42 ` Alexander Stein
2025-02-10 13:29 ` Herve Codina
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