From nobody Tue Feb 10 06:27:04 2026 Received: from smtpout-03.galae.net (smtpout-03.galae.net [185.246.85.4]) (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 B4432421886 for ; Fri, 6 Feb 2026 14:28:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.85.4 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770388102; cv=none; b=LvTDUFj4BnbU1wdg/xn4fqksPyVLhbRwtJ617WnRORrCCFyqIl+/QlcyMsD/MV/ngRYdDClNvTvdh02GdEDj6KBXU1XozpdwhxOeWGemwttKEW1U04tBisq3iRe1dyYus8ru77wpbSpjKLtmKmAUS+q3n8R8UFZusAnuLDigzYk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770388102; c=relaxed/simple; bh=kUD90gufEouqo9lqKKPBCb9sDGG+Y9M6YCyqlrgiOGs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=i5c+lnCKli+8xd1YKWyJ3h9onT9zx8c5QcEDqtRJOymmVJXFY8Iwzccle1TddbiV0p2JWDTR/VROy+b+gL+xSWQ0U0R/FaUWF9oDTlCrQQj8SHMpt0u58siLo8dOC5JgmRb+MrrKQQ/6wg9xWvZIRdQixGU796e7SWBH4SiF300= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=vNTxuJOq; arc=none smtp.client-ip=185.246.85.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="vNTxuJOq" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id 4B29E4E42443; Fri, 6 Feb 2026 14:28:21 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 206DE60729; Fri, 6 Feb 2026 14:28:21 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 65C4A119D1D0C; Fri, 6 Feb 2026 15:28:17 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1770388100; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=7ojoqEnd4KP21WGxwwSriM+SWgoBM/mvChCKNCOG+D4=; b=vNTxuJOqIbKLr3Jgz+7j0x8DQq3YycMZVeXpVpZGrFxZdiqgY98vk0y2XCCDGtXiNQZNjl W1qoS7lHvI+mrsBFscsfXXAeptRIVIogWtVFuraZ2WCvVrJhw/96KDTxZFr55YhD9cD2T0 CnVcmSgyarV7sWiwcpV/YwMcJ/4/dBVdcJeCGjmvpjlEGbYwuT2aHRAC7Bew1rYKppYjx/ +5DPBxPYg3FgtacTISRj+NwaiZD8QXR+nsXagrhshmvEQhrvIoAWnDyIVNIcZWwJNaAjas HYpcywz2PNkn57Uc9tF0ih8f38eJDiw3JXm4fL2qAaU+YtJEVJf4VWVDdCWIHg== From: Luca Ceresoli Date: Fri, 06 Feb 2026 15:27:56 +0100 Subject: [PATCH 2/2] drm/bridge: samsung-dsim: use drm_bridge_clear_and_put() to put the next bridge Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260206-drm-bridge-atomic-vs-remove-clear_and_put-v1-2-6f1a7d03c45f@bootlin.com> References: <20260206-drm-bridge-atomic-vs-remove-clear_and_put-v1-0-6f1a7d03c45f@bootlin.com> In-Reply-To: <20260206-drm-bridge-atomic-vs-remove-clear_and_put-v1-0-6f1a7d03c45f@bootlin.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Inki Dae , Jagan Teki , Marek Szyprowski Cc: Hui Pu , Ian Ray , Thomas Petazzoni , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Luca Ceresoli X-Mailer: b4 0.14.3 X-Last-TLS-Session-Version: TLSv1.3 drm_bridge_clear_and_put() is simpler to write and it prevents any potential future use-after-free. Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/bridge/samsung-dsim.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge= /samsung-dsim.c index 1d85e706c74b..568fc0f5b416 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -1980,8 +1980,7 @@ static int samsung_dsim_host_attach(struct mipi_dsi_h= ost *host, return 0; =20 err_release_next_bridge: - drm_bridge_put(dsi->bridge.next_bridge); - dsi->bridge.next_bridge =3D NULL; + drm_bridge_clear_and_put(&dsi->bridge.next_bridge); return ret; } =20 @@ -2002,8 +2001,7 @@ static int samsung_dsim_host_detach(struct mipi_dsi_h= ost *host, if (pdata->host_ops && pdata->host_ops->detach) pdata->host_ops->detach(dsi, device); =20 - drm_bridge_put(dsi->bridge.next_bridge); - dsi->bridge.next_bridge =3D NULL; + drm_bridge_clear_and_put(&dsi->bridge.next_bridge); =20 samsung_dsim_unregister_te_irq(dsi); =20 --=20 2.52.0