From patchwork Thu Dec 5 00:10:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 13894553 Received: from pv50p00im-tydg10011801.me.com (pv50p00im-tydg10011801.me.com [17.58.6.52]) (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 3FD4B23AD for ; Thu, 5 Dec 2024 00:11:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=17.58.6.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733357467; cv=none; b=L7eNJh/cGl7IOLdAHFMS35U178bnq9o6HlNc7geSDa2Szd5bmjcasOVBsqfP8fSXXBhzb7UGAX8dQ9W863YZeARd4zCb0yVloFcgquU09fGWijPtFkUtTMSC8y271YZjGaC0jR1M88VdiZU5mg2kzh5A1sNkxWNGkbBCsCqPjoU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733357467; c=relaxed/simple; bh=R2lqHx4bJK5/czC7Noqfr75J06PBj7EwQJD0+Elvfvk=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=ailKyXTJT+agbDhelQab2f9fJYxz98mrwc8her1l4dAhX6YyrBYWHaoCg+viIixpVXtV1bveBGHh8Adw+z0lBCVk5LbuIn0qKl0R3Ahp3PKzr1OCQthphUsbLO+S5TRvBidI5uf9MO9zUTp5UjkFK/IzCZztt4g0whQHsHyIaeU= 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=nUjm31s+; arc=none smtp.client-ip=17.58.6.52 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="nUjm31s+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1733357463; bh=J6WeSKH7kVjMpjRr1tuq1yIkFW9eM7Z6c7COG90NeY8=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To: x-icloud-hme; b=nUjm31s+le2By14e1uvhDXRZcL6JvDqlAm6faRZrYR3lf5tGz2pO9OJANi3o6oJIX jDvhVuqB5hl+UMN45ytU5zEd4K74EEp95CEOuasDG6/Q/rDhT9HWfjwHQlTk7gg9Kf 1H0CpvZD/JK+jpNhp8RCjf0r5Zeqds8scLrXtRFar6mRxbUhmYk/zjuhu4EKn4CLJu ai1YelWUhUJ5MEyq0XkuGV4aouHgDFtqzkZtjYS4RP5MtW+iOf1aZ3QVemHCcg9Ow6 aawF1fTnQiXcSMAlkkDsx520AKxkNmzRAzfwQZWUThz2DShzSKRLjYp96CIRKxGt+P 0tS7N48Gl948g== Received: from [192.168.1.26] (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-tydg10011801.me.com (Postfix) with ESMTPSA id 7E4458002D7; Thu, 5 Dec 2024 00:10:52 +0000 (UTC) From: Zijun Hu Subject: [PATCH v3 00/11] driver core: Constify API device_find_child() Date: Thu, 05 Dec 2024 08:10:09 +0800 Message-Id: <20241205-const_dfc_done-v3-0-1611f1486b5a@quicinc.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAGHvUGcC/2XMQQ6CMBCF4auQWVvTUozgynsYQsp0kFnYYotEQ 3p3a7cu/5e8b4dIgSnCpdoh0MaRvcuhDxXgbNydBNvcUMu6UbVUAr2L62AnHKx3JIwhPCvS40g G8mkJNPG7gLc+98xx9eFT/E391kLJVv1RmxJSdLY9kZ66RuN4fb4Y2eER/QP6lNIXY8kkKK4AA AA= X-Change-ID: 20241201-const_dfc_done-aaec71e3bbea To: Greg Kroah-Hartman Cc: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , James Bottomley , =?utf-8?q?Thomas_?= =?utf-8?q?Wei=C3=9Fschuh?= , Zijun Hu , linux-kernel@vger.kernel.org, nvdimm@lists.linux.dev, linux-sound@vger.kernel.org, sparclinux@vger.kernel.org, linux-block@vger.kernel.org, linux-cxl@vger.kernel.org, linux1394-devel@lists.sourceforge.net, arm-scmi@vger.kernel.org, linux-efi@vger.kernel.org, linux-gpio@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-hwmon@vger.kernel.org, linux-media@vger.kernel.org, linux-pwm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-scsi@vger.kernel.org, open-iscsi@googlegroups.com, linux-usb@vger.kernel.org, linux-serial@vger.kernel.org, netdev@vger.kernel.org, Zijun Hu X-Mailer: b4 0.14.2 X-Proofpoint-ORIG-GUID: SZpoGZHNuD90VNBiGwICh7r4ZYK4OmYI X-Proofpoint-GUID: SZpoGZHNuD90VNBiGwICh7r4ZYK4OmYI 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=2024-12-04_19,2024-12-04_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 malwarescore=0 clxscore=1015 phishscore=0 suspectscore=0 bulkscore=0 mlxscore=0 spamscore=0 mlxlogscore=899 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2308100000 definitions=main-2412040186 X-Apple-Remote-Links: v=1;h=KCk=;charset=UTF-8 This patch series is to constify the following API: struct device *device_find_child(struct device *dev, void *data, int (*match)(struct device *dev, void *data)); To : struct device *device_find_child(struct device *dev, const void *data, device_match_t match); typedef int (*device_match_t)(struct device *dev, const void *data); Why to constify the API? - Protect caller's match data @*data which is for comparison and lookup and the API does not actually need to modify @*data. - Make the API's parameters (@match)() and @data have the same type as all of other device finding APIs (bus|class|driver)_find_device(). - All kinds of existing device matching functions can be directly taken as the API's argument, they were exported by driver core. What to do? - Patches [1/11, 3/11] prepare for constifying the API. - Patch 4/11 constifies the API and adapt for its various subsystem usages. - Remaining do cleanup for several usages with benefits brought above. --- Changes in v3: - Solve build broken issue by squashing changes of various subsystem. - Reduce recipients to try to send out full patch serial. - Correct tiles and commit messages. - Link to v2: https://lore.kernel.org/all/20241203-const_dfc_done-v2-0-7436a98c497f@quicinc.com Changes in v2: - Series v1 have no code review comments and are posted a long time ago, so may ignore differences. - Link to v1: https://lore.kernel.org/r/20240811-const_dfc_done-v1-0-9d85e3f943cb@quicinc.com - Motivation link: https://lore.kernel.org/lkml/917359cc-a421-41dd-93f4-d28937fe2325@icloud.com --- Zijun Hu (11): libnvdimm: Simplify nd_namespace_store() implementation slimbus: core: Constify slim_eaddr_equal() bus: fsl-mc: Constify fsl_mc_device_match() driver core: Constify API device_find_child() then adapt for various usages driver core: Simplify API device_find_child_by_name() implementation driver core: Remove match_any() slimbus: core: Simplify of_find_slim_device() implementation gpio: sim: Remove gpio_sim_dev_match_fwnode() driver core: Introduce an device matching API device_match_type() cxl/pmem: Remove match_nvdimm_bridge() usb: typec: class: Remove both cable_match() and partner_match() arch/sparc/kernel/vio.c | 6 +++--- drivers/base/core.c | 30 ++++++++++-------------------- drivers/block/sunvdc.c | 6 +++--- drivers/bus/fsl-mc/dprc-driver.c | 8 ++++---- drivers/cxl/core/pci.c | 4 ++-- drivers/cxl/core/pmem.c | 9 +++------ drivers/cxl/core/region.c | 21 ++++++++++++--------- drivers/firewire/core-device.c | 4 ++-- drivers/firmware/arm_scmi/bus.c | 4 ++-- drivers/firmware/efi/dev-path-parser.c | 4 ++-- drivers/gpio/gpio-sim.c | 7 +------ drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 +- drivers/hwmon/hwmon.c | 2 +- drivers/media/pci/mgb4/mgb4_core.c | 4 ++-- drivers/nvdimm/bus.c | 2 +- drivers/nvdimm/claim.c | 9 +-------- drivers/pwm/core.c | 2 +- drivers/rpmsg/rpmsg_core.c | 4 ++-- drivers/scsi/qla4xxx/ql4_os.c | 3 ++- drivers/scsi/scsi_transport_iscsi.c | 10 +++++----- drivers/slimbus/core.c | 17 +++++------------ drivers/thunderbolt/retimer.c | 2 +- drivers/thunderbolt/xdomain.c | 2 +- drivers/tty/serial/serial_core.c | 4 ++-- drivers/usb/typec/class.c | 31 ++++++++++++++----------------- include/linux/device.h | 4 ++-- include/linux/device/bus.h | 1 + include/scsi/scsi_transport_iscsi.h | 4 ++-- net/dsa/dsa.c | 2 +- tools/testing/cxl/test/cxl.c | 2 +- 30 files changed, 90 insertions(+), 120 deletions(-) --- base-commit: feffde684ac29a3b7aec82d2df850fbdbdee55e4 change-id: 20241201-const_dfc_done-aaec71e3bbea Best regards,