From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C43C17756; Sun, 28 Jul 2024 15:49:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722181788; cv=none; b=d6P+iunHtaEQaqlM8/7jvPhVQN4t06gXYSaCfMnv8VNqEL7eZbDn85hOY4yF8sLgnvpiVbdUAOkertPbYVDbOwIXR8tpAAbvoGqLbYSUBh67yoUjY3BZCFRQOmihywjZYxLFcTMsDN4xU3tejp3y8Y42xVOKmYfrYdRIQF3U6ys= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722181788; c=relaxed/simple; bh=OLhg3zlv3O41sjeKlUyRS33KLMD8gij5NCSz3UKGdLQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=D3X1G7IZT8vYO6oA1gR64zEUBTpcOKhqRXxk4wvn59fAgZREDpqbKHYlxBbru5PuIcNmCzEqA1vtimJ8gsIHs3eXojjV6LrvRZ28Vy0ht0AOl6IgvLLg/OswD9Ef1RmmTZNw8/++pS4X5XHlkrQP0hWSB7A2se9psHJO7arOb/U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UxVPO+UM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UxVPO+UM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35D88C4AF0A; Sun, 28 Jul 2024 15:49:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722181788; bh=OLhg3zlv3O41sjeKlUyRS33KLMD8gij5NCSz3UKGdLQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UxVPO+UM4VXhD0z6duX9d4/0nhomk723toxjFFCeqeL588GGrJ6bS3dhv61pwGplU gMbh6WcOiH78FKPJmCA5D6wNqv0eTsdAQGE8jICc0gRrZC38hWuGTXfBMM5VBaVqL+ GVJiczhCkVAir2a4qyIsLm/QN8mrU6hEA8ihocm2BvkCl/qzL9rsQqjd9WoX1u/GWo yIIIrBWNnSbR7XlLQlXCwJyqx63qqQjUzb7O4e2Y9uDvHyMJ5Crj+RQY26GU745hgY a7ED4IaEDUIJyTMD62XQOrd5aSWyhoQ53hKQ9d+as6n29tuTq8aDO49ym5sVTzL/FR +9fK3NW11WoVQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alex Hung , Harry Wentland , Hamza Mahfooz , Alex Deucher , Sasha Levin , sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, roman.li@amd.com, mario.limonciello@amd.com, joshua@froggi.es, wayne.lin@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.15 04/10] drm/amd/display: Add null checker before passing variables Date: Sun, 28 Jul 2024 11:49:02 -0400 Message-ID: <20240728154927.2050160-4-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240728154927.2050160-1-sashal@kernel.org> References: <20240728154927.2050160-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.164 Content-Transfer-Encoding: 8bit From: Alex Hung [ Upstream commit 8092aa3ab8f7b737a34b71f91492c676a843043a ] Checks null pointer before passing variables to functions. This fixes 3 NULL_RETURNS issues reported by Coverity. Reviewed-by: Harry Wentland Acked-by: Hamza Mahfooz Signed-off-by: Alex Hung Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index b821abb56ac3b..333be05418935 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2431,7 +2431,8 @@ static int dm_suspend(void *handle) dm->cached_dc_state = dc_copy_state(dm->dc->current_state); - dm_gpureset_toggle_interrupts(adev, dm->cached_dc_state, false); + if (dm->cached_dc_state) + dm_gpureset_toggle_interrupts(adev, dm->cached_dc_state, false); amdgpu_dm_commit_zero_streams(dm->dc); @@ -6884,7 +6885,8 @@ static void create_eml_sink(struct amdgpu_dm_connector *aconnector) aconnector->dc_sink = aconnector->dc_link->local_sink ? aconnector->dc_link->local_sink : aconnector->dc_em_sink; - dc_sink_retain(aconnector->dc_sink); + if (aconnector->dc_sink) + dc_sink_retain(aconnector->dc_sink); } } @@ -8218,7 +8220,8 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector) drm_add_modes_noedid(connector, 640, 480); } else { amdgpu_dm_connector_ddc_get_modes(connector, edid); - amdgpu_dm_connector_add_common_modes(encoder, connector); + if (encoder) + amdgpu_dm_connector_add_common_modes(encoder, connector); amdgpu_dm_connector_add_freesync_modes(connector, edid); } amdgpu_dm_fbc_init(connector); -- 2.43.0