From: Johan Hovold <johan@kernel.org>
To: Douglas Anderson <dianders@chromium.org>,
Neil Armstrong <neil.armstrong@linaro.org>,
Jessica Zhang <jesszhan0024@gmail.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Johan Hovold <johan@kernel.org>
Subject: [PATCH v2 0/2] drm/panel-edp: take i2c adapter module reference
Date: Fri, 17 Jul 2026 16:31:17 +0200 [thread overview]
Message-ID: <20260717143119.1815106-1-johan@kernel.org> (raw)
The i2c subsystem currently blocks during adapter deregistration
whenever there are consumers holding a reference.
Switch to using of_get_i2c_adapter_by_node() which also takes a
reference to the adapter module so that an attempt to unload the module
while in use fails gracefully instead of blocking uninterruptibly.
Johan
Changes in v2:
- fix a pre-existing leak in a corner case flagged by Sashiko that
Doug thought was worth fixing
- rebase module reference patch on top of that fix
Johan Hovold (2):
drm/panel-edp: fix i2c adapter leak on probe failure
drm/panel-edp: take i2c adapter module reference
drivers/gpu/drm/panel/panel-edp.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
--
2.54.0
next reply other threads:[~2026-07-17 14:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-17 14:31 Johan Hovold [this message]
2026-07-17 14:31 ` [PATCH v2 1/2] drm/panel-edp: fix i2c adapter leak on probe failure Johan Hovold
2026-07-17 17:03 ` Doug Anderson
2026-07-17 14:31 ` [PATCH v2 2/2] drm/panel-edp: take i2c adapter module reference Johan Hovold
2026-07-17 17:04 ` Doug Anderson
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