From patchwork Wed Dec 18 00:01:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 13912728 Received: from mr85p00im-ztdg06011201.me.com (mr85p00im-ztdg06011201.me.com [17.58.23.181]) (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 1D5AD4C91 for ; Wed, 18 Dec 2024 00:02:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=17.58.23.181 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734480139; cv=none; b=lZYZxAIHV+DAzjPJ8wCIvLau2iiA2yBq2VETkXLHav2mTtwlwdAcrNhN3KcAxj8orEjgWaQKvurcB6tc0PWLgLcwhRoSGANL12MVtszVjSUEegQic5J88QdOc7BBkwt+fXm5Rx3iOE5FgU54PZiXOxWRI36eyS6nBC/uotcidp4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734480139; c=relaxed/simple; bh=twBoU/hUI0BmgFQO7AYrFtb1Yc7+m7J4E3301tqjuAs=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=uwEevDa9NMn11EdeDu6HVOtxhl7lOZN9Y00DZ5Fm5Eq4rVALNgp2VuHyTFZhRvuqokKTMY1aHIJPIWCxDghkiTD6Vn4/jNiFOpCbym1Dssd8LfO1empKcyFQMzizMLHoLJoJV1DuNYDcy/XXxgGZusowTPdQVju485B220g+uyE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=icloud.com; spf=pass smtp.mailfrom=icloud.com; dkim=pass (2048-bit key) header.d=icloud.com header.i=@icloud.com header.b=X98NLjzy; arc=none smtp.client-ip=17.58.23.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=icloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=icloud.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=icloud.com header.i=@icloud.com header.b="X98NLjzy" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1734480136; bh=TAmttWzYiyjZd5pyfmY5LYYcGBF5iOXw956oS/nDGtc=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To: x-icloud-hme; b=X98NLjzygvnowUFQNJGiqv+9g15ao+2S/JyPh+Z0yGqILITTjAUNDV4ixt7JeRRR0 NTwiv3b89cox2P09LNPwIpRePqBNhTwwspNYjWhUPDDn+Btn3LUjsimTgh7yxNdI5+ xPlHjw4G6R/MmLjpAbrK6YCfJ1E37R5cHYF2A8aq/0GFyT580qjVvBxr3mQZ7tL1MT 4o/d/yHb1h7rklHvg+T51o53ZHnJ/ol9GphINfN9MULTXtm1juq3rs/v+bPe2wY8x4 ZJ+ryt3thd4LsvHB/JOXxYP9k++AZCf8Azkd83FfPufsXahQySHeleojaLeNM6QE2S tBB9zVdr2cPaQ== Received: from [192.168.1.26] (mr38p00im-dlb-asmtp-mailmevip.me.com [17.57.152.18]) by mr85p00im-ztdg06011201.me.com (Postfix) with ESMTPSA id F309D960180; Wed, 18 Dec 2024 00:02:08 +0000 (UTC) From: Zijun Hu Subject: [PATCH v4 0/8] driver core: class: Fix bug and code improvements for class APIs Date: Wed, 18 Dec 2024 08:01:30 +0800 Message-Id: <20241218-class_fix-v4-0-3c40f098356b@quicinc.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIANoQYmcC/22Q3U7DMAxGX6XKNUF2kqZNr3gPhKr8OCwSa6EpF Wjau+NtQnQSl/6Sc+TPJ1FpKVTF0JzEQlupZZ54MA+NiAc/vZIsiWehQBlEMDK++VrHXL5kxs6 G5Ch4pQT/f1+I46vr+YXnQ6nrvHxf1Rte0l9Lu7NsKEH20FubnXPGt08fnyWWKT7G+Sgunk3tW FR7VjHb6YSuT+Ah/cPqP1bds5pZMKQgmgyuw3v2fCu0EKe1rLdWIvhKkt+PZR2amJIGCgGDy9p i6xJ3gL4PFj2RsoascanzYn/LobntAsieqa5jynFM80TSe4odkg6B/LAZXuH8A3b/uy6eAQAA X-Change-ID: 20241104-class_fix-f176bd9eba22 To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Tejun Heo , Josef Bacik , Jens Axboe , Boris Burkov , Davidlohr Bueso , Jonathan Cameron , Dave Jiang , Alison Schofield , Vishal Verma , Ira Weiny , Dan Williams Cc: Zijun Hu , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-block@vger.kernel.org, linux-cxl@vger.kernel.org, Zijun Hu , =?utf-8?q?M?= =?utf-8?q?ichal_Koutn=C3=BD?= , stable@vger.kernel.org, Fan Ni , Jonathan Cameron X-Mailer: b4 0.14.2 X-Proofpoint-ORIG-GUID: zmuUOPLAPeEA9ukysVMFzKdYQRil6pPm X-Proofpoint-GUID: zmuUOPLAPeEA9ukysVMFzKdYQRil6pPm X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2024-12-17_12,2024-12-17_03,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 suspectscore=0 malwarescore=0 adultscore=0 bulkscore=0 clxscore=1011 spamscore=0 mlxlogscore=872 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2308100000 definitions=main-2412170183 X-Apple-Remote-Links: v=1;h=KCk=;charset=UTF-8 This patch series is to fix bugs and improve codes regarding various driver core device iterating APIs Signed-off-by: Zijun Hu --- Changes in v4: - Squich patches 3-5 into one based on Jonathan and Fan comments. - Add one more patch - Link to v3: https://lore.kernel.org/r/20241212-class_fix-v3-0-04e20c4f0971@quicinc.com Changes in v3: - Correct commit message, add fix tag, and correct pr_crit() message for 1st patch - Add more patches regarding driver core device iterating APIs. - Link to v2: https://lore.kernel.org/r/20241112-class_fix-v2-0-73d198d0a0d5@quicinc.com Changes in v2: - Remove both fix and stable tag for patch 1/3 - drop patch 3/3 - Link to v1: https://lore.kernel.org/r/20241105-class_fix-v1-0-80866f9994a5@quicinc.com --- Zijun Hu (8): driver core: class: Fix wild pointer dereferences in API class_dev_iter_next() blk-cgroup: Fix class @block_class's subsystem refcount leakage driver core: Move true expression out of if condition in 3 device finding APIs driver core: Rename declaration parameter name for API device_find_child() cluster driver core: Correct parameter check for API device_for_each_child_reverse_from() driver core: Correct API device_for_each_child_reverse_from() prototype driver core: Introduce device_iter_t for device iterating APIs driver core: Move 2 one line device finding APIs to header block/blk-cgroup.c | 1 + drivers/base/bus.c | 9 +++++--- drivers/base/class.c | 11 ++++++++-- drivers/base/core.c | 49 +++++++++---------------------------------- drivers/base/driver.c | 9 +++++--- drivers/cxl/core/hdm.c | 2 +- drivers/cxl/core/region.c | 2 +- include/linux/device.h | 28 ++++++++++++++++--------- include/linux/device/bus.h | 7 +++++-- include/linux/device/class.h | 4 ++-- include/linux/device/driver.h | 2 +- 11 files changed, 60 insertions(+), 64 deletions(-) --- base-commit: cdd30ebb1b9f36159d66f088b61aee264e649d7a change-id: 20241104-class_fix-f176bd9eba22 prerequisite-change-id: 20241201-const_dfc_done-aaec71e3bbea:v4 prerequisite-patch-id: 536aa56c0d055f644a1f71ab5c88b7cac9510162 prerequisite-patch-id: 39b0cf088c72853d9ce60c9e633ad2070a0278a8 prerequisite-patch-id: 60b22c42b67ad56a3d2a7b80a30ad588cbe740ec prerequisite-patch-id: 119a167d7248481987b5e015db0e4fdb0d6edab8 prerequisite-patch-id: 133248083f3d3c57beb16473c2a4c62b3abc5fd0 prerequisite-patch-id: 4cda541f55165650bfa69fb19cbe0524eff0cb85 prerequisite-patch-id: 2b4193c6ea6370c07e6b66de04be89fb09448f54 prerequisite-patch-id: 73c675db18330c89fd8ca4790914d1d486ce0db8 prerequisite-patch-id: 88c50fc851fd7077797fd4e63fb12966b1b601bd prerequisite-patch-id: 47b93916c1b5fb809d7c99aeaa05c729b1af01c5 prerequisite-patch-id: 52ffb42b5aae69cae708332e0ddc7016139999f1 Best regards,