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drm/komeda: return early if drm_universal_plane_init() fails.

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[ Upstream commit c8f76c37cc3668ee45e081e76a15f24a352ebbdd ]

If drm_universal_plane_init() fails early we jump to the common cleanup code
that calls komeda_plane_destroy() which in turn could access the uninitalised
drm_plane and crash. Return early if an error is detected without going through
the common code.

Reported-by: Steven Price <steven.price@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://lore.kernel.org/dri-devel/20211203100946.2706922-1-liviu.dudau@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Liviu Dudau 2021-12-02 17:00:33 +00:00 • committed by Greg Kroah-Hartman
commit aea748501d
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/arm/display/komeda/komeda_plane.c
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@ -274,8 +274,10 @@ static int komeda_plane_add(struct komeda_kms_dev *kms,
komeda_put_fourcc_list(formats);
if (err)
goto cleanup;
if (err) {
kfree(kplane);
return err;
}
drm_plane_helper_add(plane, &komeda_plane_helper_funcs);