linux-kernel - [PATCH 0/7] drm/sun4i: Various fixes and cleanups part 1

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Date:   Fri, 17 Feb 2017 11:13:23 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>,
        David Airlie <airlied@...ux.ie>
Cc:     Chen-Yu Tsai <wens@...e.org>, dri-devel@...ts.freedesktop.org,
        linux-sunxi@...glegroups.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/7] drm/sun4i: Various fixes and cleanups part 1

Hi Maxime,

This is the first bunch of fixes for the sun4i drm driver. This is part
of the cleanup I am doing towards making the driver support multiple
display pipelines.

Patch 1 moves the drm_mode_config_cleanup call from sun4i_framebuffer_free
to be called directly in sun4i_drv_unbind. This is needed for patch 2, so
it doesn't get called twice.

Patch 2 adds proper clean up to the error return path in sun4i_drv_bind.

Patch 3 adds a check for drm_vblank_init's return value. It can fail if
no memory is available.

Patch 4 fixes the element size passed to kcalloc. Previously we were
allocating too much memory.

Patch 5 drops a useless assignment.

Patch 6 makes sun4i_layers_init actually store the created layers in the
list that it returns. This one was particularly nasty.

Patch 7 makes sun4i_crtc_init pass back error codes.

We probably don't need to tag stable for these. Patch 1 and 2 fix up
possible memory and object leakage, but unless the user keeps unloading
and loading the modules, it won't leak past a few times.

Regards
ChenYu

Chen-Yu Tsai (7):
  drm/sun4i: Move drm_mode_config_cleanup call to main driver
  drm/sun4i: Fix up error path cleanup for master bind function
  drm/sun4i: Check return value of drm_vblank_init
  drm/sun4i: Fix kcalloc element size in sun4i_layers_init
  drm/sun4i: Drop useless assignment in sun4i_layers_init
  drm/sun4i: Save newly created layer in layers array in
    sun4i_layers_init
  drm/sun4i: Make sun4i_crtc_init return ERR_PTR style error codes

 drivers/gpu/drm/sun4i/sun4i_crtc.c        |  4 ++--
 drivers/gpu/drm/sun4i/sun4i_drv.c         | 27 +++++++++++++++++++--------
 drivers/gpu/drm/sun4i/sun4i_framebuffer.c |  1 -
 drivers/gpu/drm/sun4i/sun4i_layer.c       |  5 +++--
 4 files changed, 24 insertions(+), 13 deletions(-)

-- 
2.11.0