linux-kernel - [PATCH drm-misc-next v4 0/4] drm/arm/hdlcd: use drm managed resources

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Message-Id: <20221026153431.72033-1-dakr@redhat.com>
Date:   Wed, 26 Oct 2022 17:34:27 +0200
From:   Danilo Krummrich <dakr@...hat.com>
To:     daniel@...ll.ch, airlied@...ux.ie, tzimmermann@...e.de,
        mripard@...nel.org, liviu.dudau@....com, brian.starkey@....com
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Danilo Krummrich <dakr@...hat.com>
Subject: [PATCH drm-misc-next v4 0/4] drm/arm/hdlcd: use drm managed resources

Hi,

This patch series converts the driver to use drm managed resources to prevent
potential use-after-free issues on driver unbind/rebind and to get rid of the
usage of deprecated APIs.

Changes in v2:
  - drop patch "drm/arm/hdlcd: crtc: use drmm_crtc_init_with_planes()"

Changes in v3:
  - Fix alternate return paths in srcu read-side critical sections causing a
    stall when unregistering the driver.
  - Fix potential null pointer dereference in hdlcd_crtc_cleanup() introduced
    dropping the patch in v2.
  - Add a patch to remove explicit calls to drm_mode_config_cleanup().

Changes in v4:
  - Remove patches to protect platform device bound resources with
    drm_dev_{enter,exit}, since this would leave the hardware enabled when
    regularly unloading the driver e.g. via rmmod.
    Instead do this in a later series, once we got drm_dev_unplug() in place
    to deal with a regular driver shutdown.

Danilo Krummrich (4):
  drm/arm/hdlcd: use drmm_* to allocate driver structures
  drm/arm/hdlcd: replace drm->dev_private with drm_to_hdlcd_priv()
  drm/arm/hdlcd: plane: use drm managed resources
  drm/arm/hdlcd: remove calls to drm_mode_config_cleanup()

 drivers/gpu/drm/arm/hdlcd_crtc.c | 24 +++++++------------
 drivers/gpu/drm/arm/hdlcd_drv.c  | 41 ++++++++++++++++----------------
 drivers/gpu/drm/arm/hdlcd_drv.h  |  2 ++
 3 files changed, 32 insertions(+), 35 deletions(-)


base-commit: e1e7bc481d49c3e3ada11029ce0d9b85a0a539d7
-- 
2.37.3