From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 509B63FD133; Tue, 26 May 2026 16:46:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779814000; cv=none; b=Ig0nGHuFBlv/Ag2s2T3JEP0Z5wvQAahN+X0OF4Kx/z3NyZ3NvAL26+l/Mx0Vt8MOG0oKg7xd6kiN/3V31wRRbAFsdpcmaYHNLSKgHBVGN/VXqSDA7fHaaXtZj7ztFczmC7fucygmtXC0krVeTdnV9aipD4qEK/T1Iv3KCkruHfw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779814000; c=relaxed/simple; bh=u5HTzQX3tbGR+9Qa/HlwJij4QSF7J0Dnsbadygh24+g=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=c4MSKMOvjG8BKedvPC5gCPDosPyeMKr8cfbWNP9CyN26ffjzc7ZU2+yEgOZNwG0xa8ddax6YV9ckLO6VIopuQCp1gaS9HFUkXyoBfM7h6xBVamh813KHw3zINV1RfYZetC3fzQYJgniHj7n6skg4fGh7oaFHCpCeJVNLn6fudEM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DVrVj7lb; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DVrVj7lb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0CE721F00A3A; Tue, 26 May 2026 16:46:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779813994; bh=7G0AvhnldznKjlOkg6oJndKDwtDSJwo/+5wcviSKhb0=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=DVrVj7lbOQdEd3pO6dhrQAFwfkj63ibCFZ5MR9wHykOKdFO8YY/d6iPHimL+SfFku mEZmfGzj7IHHugR73kZUmQkWhP6O4Br5xk52iR+cxTUruVtZ+5hseOHeepBpreKuGN w6ES52oWhL1z85e44LmYnqrdaZ6zmg5AqZ7iumjlR1NJcFsL8JlQDw3DT6hf6+omxL 2y9JgtWenDtqtyPcaYZAWUjnCXZJQel+5dOLKz7x8oPHNZhadWmZBJO3l23eD7zE6i rG6FYwBp2JZgMIQkYIcBPiyFv9CB98oHj2++w2BuwEVFsfRsiS00KNwKS/NSVlNSsh lN0uMT8Q6y/Vw== From: Maxime Ripard Date: Tue, 26 May 2026 18:46:15 +0200 Subject: [PATCH v6 03/19] drm/atomic: Drop drm_private_obj.state assignment from create_state Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260526-drm-mode-config-init-v6-3-852346394200@kernel.org> References: <20260526-drm-mode-config-init-v6-0-852346394200@kernel.org> In-Reply-To: <20260526-drm-mode-config-init-v6-0-852346394200@kernel.org> To: Maarten Lankhorst , Thomas Zimmermann , David Airlie , Simona Vetter , Jonathan Corbet , Shuah Khan , Dmitry Baryshkov , Jyri Sarha , Tomi Valkeinen , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Simon Ser , Harry Wentland , Melissa Wen , Sebastian Wick , Alex Hung , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , Chen-Yu Tsai , Samuel Holland , Dave Stevenson , =?utf-8?q?Ma=C3=ADra_Canal?= , Raspberry Pi Kernel Maintenance Cc: dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Stone , intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, Maxime Ripard , Laurent Pinchart X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1675; i=mripard@kernel.org; h=from:subject:message-id; bh=u5HTzQX3tbGR+9Qa/HlwJij4QSF7J0Dnsbadygh24+g=; b=owGbwMvMwCmsHn9OcpHtvjLG02pJDFmi58Lfzo24yJ29TJ5t2QSWQ4vkPGe/V/hwrcs8N+zqv iurco77dExlYRDmZJAVU2R5IhN2enn74ioH+5U/YOawMoEMYeDiFICJlEsxNmxpXMwz/7fl+7On 1718fcJtx2Rfj5kHNyd0LLHlmuJw0+xH2PluRoEM9qf/7jVHHdS+N5+x4cn6HZZMtbLaRp0PAzi upCxkrZGZrd8/ocruEof355WvVINyPqW5lHpV/zVjO/J8/iZ9AA== X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D The initial intent of the atomic_create_state hook was to simply allocate a proper drm_private_state and return it, without any side effect. However, __drm_atomic_helper_private_obj_create_state(), which most atomic_create_state implementations call, introduces a side effect by setting drm_private_obj.state to the newly allocated state. This assignment defeats the purpose, but is also redundant since drm_atomic_private_obj_init(), the only call site for the atomic_create_state hook, will also set this pointer to the newly allocated state. Drop the assignment in __drm_atomic_helper_private_obj_create_state(). Fixes: e7be39ed1716 ("drm/atomic-helper: Add private_obj atomic_create_state helper") Reviewed-by: Laurent Pinchart Reviewed-by: Thomas Zimmermann Signed-off-by: Maxime Ripard --- drivers/gpu/drm/drm_atomic_state_helper.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c index cc70508d4fdb..a82568d87e4f 100644 --- a/drivers/gpu/drm/drm_atomic_state_helper.c +++ b/drivers/gpu/drm/drm_atomic_state_helper.c @@ -729,12 +729,10 @@ EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state); void __drm_atomic_helper_private_obj_create_state(struct drm_private_obj *obj, struct drm_private_state *state) { if (state) state->obj = obj; - - obj->state = state; } EXPORT_SYMBOL(__drm_atomic_helper_private_obj_create_state); /** * __drm_atomic_helper_private_obj_duplicate_state - copy atomic private state -- 2.54.0