From patchwork Wed Dec 18 00:01:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 13912725 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 79DEE1DFF7 for ; Wed, 18 Dec 2024 00:03:00 +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=1734480186; cv=none; b=WUUW6KYolMI2MzbofaGr6irI/I2EBRKdGNC8ygYV2Dg7fnNnLr49P8LptmZ4e/Q1IdC/eFDwU/inI9md1oLrtgKYLvaoMtbeievvic16qLGTZ0tU0kVehr44WMfZ1Pz5P0nEU7h0VQy+v/9IqsDWyPjCXxgF/kGQ8KkVS3MlPnY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734480186; c=relaxed/simple; bh=DwQV+1u1k+MMC8p20XB/ThrvufR22TR7sB4o/3ThFnI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=N1M+29qEUc3a+soZD29mVgyjoJ1UoY8GoAdEro/tUbY2INcATODkf1rO3iDoKq4NudtooNCpRpGkR/wOINy61N/toE5/DoTmzvQ9kHEQnh1vr4DCb4PRF+lM2lCd9+NVsj4FF6tr0fMU4vzrRiv9o4oWGNSlHFDTkS+xg65zq24= 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=OR/Y9JsU; 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="OR/Y9JsU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1734480179; bh=hSVqi/9cLAHS96j0Wuyjns8MrivpzIzzYpGb9TI00yE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To: x-icloud-hme; b=OR/Y9JsUHaDQlXISfxeOFaZpQRqD65DCPcmFSigBoE2A1rmUYmj3CqW1tLxZPHNsM 86dMbMhlOsnaDBsJXlx5VOkY/kx7I6fM73N4SPikJWQP9DID61gg5DUh42KsV2PrBv mFlA0954YXj/qxYad4GycDBF3MglAuEs1ax2APDQCeuYK4rssQWFYuDAGR/D4kzI2C sL4oPIDztzsGbqILvfFaqlzLaEE2TjXecWR+Rpy1tLyiqMrtvnkMHt3adX0uDTd+Xc bMChPkk9dd6htpdfpB/zmwG51CEZ6N3pl8ylw/xAPokSZ1ngdCuAr+0woK0l8qRnl6 A+pUT4aIWYJlg== 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 99D059602B1; Wed, 18 Dec 2024 00:02:53 +0000 (UTC) From: Zijun Hu Date: Wed, 18 Dec 2024 08:01:36 +0800 Subject: [PATCH v4 6/8] driver core: Correct API device_for_each_child_reverse_from() prototype Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241218-class_fix-v4-6-3c40f098356b@quicinc.com> References: <20241218-class_fix-v4-0-3c40f098356b@quicinc.com> In-Reply-To: <20241218-class_fix-v4-0-3c40f098356b@quicinc.com> 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 , Jonathan Cameron X-Mailer: b4 0.14.2 X-Proofpoint-ORIG-GUID: ciFWXYAp8bRX3d_gQtgIfkHBzsHCBVFL X-Proofpoint-GUID: ciFWXYAp8bRX3d_gQtgIfkHBzsHCBVFL 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=1015 spamscore=0 mlxlogscore=971 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 From: Zijun Hu For API device_for_each_child_reverse_from(..., const void *data, int (*fn)(struct device *dev, const void *data)) - Type of @data is const pointer, and means caller's data @*data is not allowed to be modified, but that usually is not proper for such non finding device iterating API. - Types for both @data and @fn are not consistent with all other for_each device iterating APIs device_for_each_child(_reverse)(), bus_for_each_dev() and (driver|class)_for_each_device(). Correct its prototype by removing const from parameter types, then adapt for various existing usages. An dedicated typedef device_iter_t will be introduced as @fn() type for various for_each device interating APIs later. Reviewed-by: Jonathan Cameron Signed-off-by: Zijun Hu --- drivers/base/core.c | 4 ++-- drivers/cxl/core/hdm.c | 2 +- drivers/cxl/core/region.c | 2 +- include/linux/device.h | 4 ++-- 4 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/base/core.c b/drivers/base/core.c index 34fb13f914b3db47e6a047fdabf3c9b18ecc08cc..7be9c732bec1b060a477b362f555c3e87c8c7b91 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -4043,8 +4043,8 @@ EXPORT_SYMBOL_GPL(device_for_each_child_reverse); * device_for_each_child_reverse_from(); */ int device_for_each_child_reverse_from(struct device *parent, - struct device *from, const void *data, - int (*fn)(struct device *, const void *)) + struct device *from, void *data, + int (*fn)(struct device *, void *)) { struct klist_iter i; struct device *child; diff --git a/drivers/cxl/core/hdm.c b/drivers/cxl/core/hdm.c index 28edd5822486851912393f066478252b20abc19d..50e6a45b30ba260c066a0781b9ed3a2f6f3462d7 100644 --- a/drivers/cxl/core/hdm.c +++ b/drivers/cxl/core/hdm.c @@ -703,7 +703,7 @@ static int cxl_decoder_commit(struct cxl_decoder *cxld) return 0; } -static int commit_reap(struct device *dev, const void *data) +static int commit_reap(struct device *dev, void *data) { struct cxl_port *port = to_cxl_port(dev->parent); struct cxl_decoder *cxld; diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c index bfecd71040c2f4373645380b4c31327d8b42d095..a4cff4c266e7a7dd6a3feb1513bf14b7d3f9afa2 100644 --- a/drivers/cxl/core/region.c +++ b/drivers/cxl/core/region.c @@ -778,7 +778,7 @@ static size_t show_targetN(struct cxl_region *cxlr, char *buf, int pos) return rc; } -static int check_commit_order(struct device *dev, const void *data) +static int check_commit_order(struct device *dev, void *data) { struct cxl_decoder *cxld = to_cxl_decoder(dev); diff --git a/include/linux/device.h b/include/linux/device.h index a9d928398895b062094b94f2c188cbe9951d7ac1..025bac08fca7b2513acb1fbcb666be1dc64f03d1 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -1079,8 +1079,8 @@ int device_for_each_child(struct device *parent, void *data, int device_for_each_child_reverse(struct device *parent, void *data, int (*fn)(struct device *dev, void *data)); int device_for_each_child_reverse_from(struct device *parent, - struct device *from, const void *data, - int (*fn)(struct device *, const void *)); + struct device *from, void *data, + int (*fn)(struct device *, void *)); struct device *device_find_child(struct device *parent, const void *data, device_match_t match); struct device *device_find_child_by_name(struct device *parent,