From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (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 3D2F21FCD05 for ; Tue, 14 Jan 2025 18:17:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736878636; cv=none; b=DVay4dSO/JORdOwFLDYgVFQuLMUq/8f0hx7Er5fZdYFD/0J2NtWGxKRE/fXYZRCk8r9O/9+glWDrA4CLt6Smc7Shr2/pxJZn6bIeDlD4BpxhHoFt4J1Nl1IKMFcoi02b+Kd9ZNAhx7TLkNghiarqM5+w6VEd1japiswEMfGWxXk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736878636; c=relaxed/simple; bh=orOv4edbjxywNug6opMKqJSNbEcpgshfOwgILgiaAA4=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=DZRhH90yv3QdynTX+QaJo7f8tmMUtPHPFxf0poOvllXiE68sc6lN++UqsHsiN/lvtEpCAM511/JzQyQVRKOIMJNFOnrM+PDIhe3gHTiMggx0RpkDixckebtxV5p9vKADOmBoO3PAzlmr5vNJsw4eo3yPG1XWqxFLlkhC8yDBYuk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=O4YPce7h; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="O4YPce7h" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1736878632; bh=orOv4edbjxywNug6opMKqJSNbEcpgshfOwgILgiaAA4=; h=From:Subject:Date:To:Cc:From; b=O4YPce7hPpf+Dp2MCZrIZ7oIYK0secjPCprtNKewTYeuXtTPHrDs84exdahy8fzTW WdGv03+GYr0NSE74CwggdK7DwGqZkLDbqu+lV4FoUuaxMV9rqTNz97WvUo8v+DUh01 XTYG4z1a6PqnZsjAfrD8XW9kV+ssxwyTzp1pJFMej2Vi2Eh4EbhEWBDqeJzZb7bwsJ E5gZ6kA4w2VGqL/c35hSl8RimeyRcX1ATpnuPV+faqVLgl2logII6tMHuBa3ZLKHp3 7a6x4PnJbwa6iJzUBMuorTy0Bcfs5hGDgPql30fMG04Tx2c1s03Cao9bZYsoSNyUlY FFgnFrS4NJypw== Received: from localhost (unknown [82.76.59.196]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by bali.collaboradmins.com (Postfix) with ESMTPSA id 3401717E08EE; Tue, 14 Jan 2025 19:17:12 +0100 (CET) From: Cristian Ciocaltea Subject: [PATCH v3 0/2] Fixup drm_atomic_helper_connector_hdmi_check() Date: Tue, 14 Jan 2025 20:16:55 +0200 Message-Id: <20250114-hdmi-conn-null-mode-v3-0-16bca91e11b0@collabora.com> 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: 7bit X-B4-Tracking: v=1; b=H4sIABeqhmcC/33NwQ7CIAyA4VdZOFsDyDbnyfcwHhgUR8JgASWaZ e8u28kY4/Fv2q8zSRgtJnKqZhIx22SDL3HYVUQN0t8QrC5NOOU1ZbSFQY8WVPAe/MM5GING6JG qGkWH+qhIuZwiGvvc1Mu19GDTPcTX9iSzdfrfywwYGGNEj6LRjDZnFZyTfYhyr8JIVjPzT6f77 XCg0CFKw8pKLdpvZ1mWN1SxnXwCAQAA X-Change-ID: 20250107-hdmi-conn-null-mode-be0c5e49ed8c To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Dave Stevenson , Dmitry Baryshkov Cc: kernel@collabora.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, AngeloGioacchino Del Regno X-Mailer: b4 0.14.2 Fix a NULL pointer dereference discovered while unloading a DRM module and provide a test to make sure the helper works as expected in case the connector's CRTC is shut down. Signed-off-by: Cristian Ciocaltea --- Changes in v3: - Drop the unnecessary test case changing bpc (Maxime) - Link to v2: https://lore.kernel.org/r/20250109-hdmi-conn-null-mode-v2-0-9eeaf1109547@collabora.com Changes in v2: - Collected R-b tags from Dmitry and Angelo - Add a 2nd patch providing a couple of KUnit tests (Maxime) - Link to v1: https://lore.kernel.org/r/20250107-hdmi-conn-null-mode-v1-1-fff4be46d106@collabora.com --- Cristian Ciocaltea (2): drm/connector: hdmi: Handle NULL display mode in state check helper drm/tests: hdmi: Add connector's CRTC deactivation test drivers/gpu/drm/display/drm_hdmi_state_helper.c | 3 + drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 76 ++++++++++++++++++++++ 2 files changed, 79 insertions(+) --- base-commit: 938fbb16aba8f7b88e0fdcf56f315a5bbad41aad change-id: 20250107-hdmi-conn-null-mode-be0c5e49ed8c