From nobody Mon Feb 9 00:06:08 2026 Received: from pv50p00im-ztdg10011201.me.com (pv50p00im-ztdg10011201.me.com [17.58.6.39]) (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 C445218E20 for ; Sun, 11 Aug 2024 05:50:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=17.58.6.39 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723355419; cv=none; b=IK4FJuRptI3ET/Yh83ChGTnRdgNDmaD8V90FcPv5QGnwaetDw7yIaKiQZ6mmOhp7BKig1RVCN0ruohZcLAdjeQst0XoZPH3lOfVn6VdbJCTVwOvfX0hvUr9dVPVhqs1nvfCE7+2MlkQTRAYXlY4DaieARuxvjfIKvThdvXN3bHw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723355419; c=relaxed/simple; bh=JUdU1dWgthWDsq2QHolSqmavGLFL1A2hr16y1bey3N0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=SQfoyGtG6GXI9WqCOx2ZVabZVZUs8IrxdUAKOVDnU78UOad4s/NnMY4gNpoLpaNTgA/dWuvuv7B+BnQb7H6z43YFjDxy6K/Ue2QldV5mUp6fS2MnZCmqJSI3Qd1eXalbmHN+GYOsgUtjcPl6L+xw2P36LDahoCZCFeB+3xNGsBo= 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=gqhsbGNV; arc=none smtp.client-ip=17.58.6.39 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="gqhsbGNV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1723355417; bh=trhfvyCKHQsYq7q0rV0HsHqp8bgmMHJ5P/2VHtxj/rI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To; b=gqhsbGNVfIqsQIA2expU2Xvta7GAp/+0rp8ZYoOxjiiSREazjgoGSzR2Edm82jX38 7Cxy8VzOJlxeCJsnfCjXp4hNniIcQrjw+QPTIZPYjn9mYjWxaN72ikArEpOL468nMP T2iW9CX07rcrm2iDmulQeFMdO5d4aCJIJvJkEbTDL3yMQlbOqIKHmvKb909QH7G511 slvMUYvFnksg4dg2BoQuc3Sdqx7LL4ppauJgVhrvZnN17GnXNzPo+YdcgXTQDd56wC YsOLOHMGCOFsgmhMgtMyg5FrBOuo5xnV+qbINkxXfBjNGoVQNh4K47llKmza716ktS 42ABNopxsinFw== Received: from [192.168.1.26] (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-ztdg10011201.me.com (Postfix) with ESMTPSA id D936B6800BD; Sun, 11 Aug 2024 05:50:13 +0000 (UTC) From: Zijun Hu Date: Sun, 11 Aug 2024 13:49:58 +0800 Subject: [PATCH v2] driver core: Simplify driver API device_find_child_by_name() implementation 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: <20240811-simply_api_dfcbn-v2-1-d0398acdc366@quicinc.com> X-B4-Tracking: v=1; b=H4sIAAVRuGYC/03P0WrDIBTG8VcJXs+hJmqaq73HKEGPx/XAoqlmY aX03WfXje3yU84P/ldWsRBWNnVXVnCnSjm1oZ46BieX3pBTaJspoQYxSskrLev7ZXYrzSGCTxz Ro5e69wiWtbO1YKTPb/L12HYseeHbqaD7g6wSD4jiZQ5lv3N8l1xyYUGjUCMAxJfzBwEleIa8/ MgF21ul7cEz7yry9rvQNnU+Oj04e+i9sxajORirtTcm9g4GDEKADVINI/vf1lJ/yyCnut2j5pB TYzUoYZoBxk+7ZMfb7QteRhitLgEAAA== To: Greg Kroah-Hartman , "Rafael J. Wysocki" Cc: Zijun Hu , linux-kernel@vger.kernel.org, Zijun Hu X-Mailer: b4 0.14.1 X-Proofpoint-GUID: oKX8w8KDfQipbixOzxlAB2oXUEQPlS81 X-Proofpoint-ORIG-GUID: oKX8w8KDfQipbixOzxlAB2oXUEQPlS81 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-11_04,2024-08-07_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 phishscore=0 suspectscore=0 adultscore=0 bulkscore=0 malwarescore=0 mlxscore=0 clxscore=1015 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2308100000 definitions=main-2408110044 X-Apple-Remote-Links: v=1;h=KCk=;charset=UTF-8 From: Zijun Hu Simplify device_find_child_by_name() implementation by using existing driver APIs device_find_child() and device_match_name(). Signed-off-by: Zijun Hu --- Changes in v2: - Correct commit message and remove all unnecessary comments and codes - Link to v1: https://lore.kernel.org/lkml/20240720-simplify_drv_api-v1-1-0= 7c5e028cccf@quicinc.com --- drivers/base/core.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/drivers/base/core.c b/drivers/base/core.c index f152e0f8fb03..8ed593d7e0be 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -4093,18 +4093,7 @@ EXPORT_SYMBOL_GPL(device_find_child); struct device *device_find_child_by_name(struct device *parent, const char *name) { - struct klist_iter i; - struct device *child; - - if (!parent) - return NULL; - - klist_iter_init(&parent->p->klist_children, &i); - while ((child =3D next_device(&i))) - if (sysfs_streq(dev_name(child), name) && get_device(child)) - break; - klist_iter_exit(&i); - return child; + return device_find_child(parent, name, device_match_name); } EXPORT_SYMBOL_GPL(device_find_child_by_name); =20 --- base-commit: bfa54a793ba77ef696755b66f3ac4ed00c7d1248 change-id: 20240811-simply_api_dfcbn-eebeb153bec7 prerequisite-change-id: 20240811-const_dfc_done-c5c206675c6b:v1 prerequisite-patch-id: 475b810c1ccacab955c654c223d5214f70c4f6c8 prerequisite-patch-id: 81a5ccaa144a7732cae29fc5ea1a13426becee5b prerequisite-patch-id: 9b77254186b7366809f949f5643f9437fa2528a0 prerequisite-patch-id: 95308bb3eedcf8c4a5e30aa3071116148495329e prerequisite-patch-id: ee643a52674e2aead02f7be3d011d88507970436 prerequisite-patch-id: 0625de1f03ef4350b1828f0faff7a9d9bdebae94 prerequisite-patch-id: 6e671f2891f6ed906a35e0a90b5d8cd71c382b9c prerequisite-patch-id: 8859b6fa330c363ef37567fc0a5421c0b9ecd8dc prerequisite-patch-id: fe9aa57807bbb8b98dba32abd614d8f2e27565cd prerequisite-patch-id: d03febd9c0afd5d21a2f664d748da7d7811a8e84 prerequisite-patch-id: c7425de06cf7032d54ff72f610d7632941be976e prerequisite-patch-id: 54c942a1a492ba04480337f99dc901a8d4def782 prerequisite-patch-id: 7e8f4a3e378d5329b886a9a3719add3cbb10e3e3 prerequisite-patch-id: 34ff831994ac7bc265f567bacefff8ae687ccd40 prerequisite-patch-id: 66d46c755c25065e9d440a4137e1e8ccc245e0be prerequisite-patch-id: 15bc81129ee07324b5a8faa39a5e6aea59952573 prerequisite-patch-id: fe9ca6ae244761b48469f375fe1fc8c9c7b24204 prerequisite-patch-id: a6fd24b37269a06a91fd926fa5111a19cdec7551 prerequisite-patch-id: 2f584b03145bc7d01e3ea632c6abb89d3b543d93 prerequisite-patch-id: 10e0d06e0340ce5028cd109fffa7f0720c70d242 prerequisite-patch-id: 0f9ea4a7c63d15c5c1324c5666901f0704c129ca prerequisite-patch-id: 4f56ebd28ae00a50130f58409d934ca79ccec6a9 prerequisite-patch-id: 70e7432951b43a67204bb7eb6c437ba135def0f1 prerequisite-patch-id: 1718891e69e1d2031336b4a6e7f251c50619f336 prerequisite-patch-id: 5f838fb00256dbadfd36735ef3a1b1e43ec20549 prerequisite-patch-id: f4b36e4136d462c8ba9f94f777a6fa1a054b8809 prerequisite-patch-id: 56c12ce5dc6bfb090fa7801fa3f31c4e52b50775 prerequisite-patch-id: 2b23c8c2ae90030a59d267297b478584447b78ac prerequisite-patch-id: 294c325d517e318063c61af218607d9721f1cc5f prerequisite-patch-id: 38fb282ac119a88af58a88b38c9cdc74372df404 prerequisite-patch-id: d3ab2693194b77403d6ce20edf25ee3896d0260b prerequisite-patch-id: 19b69184800129923777ee2acd2629565c69291b prerequisite-patch-id: f58374cebf0ada070fc0825736424dd177e49676 Best regards, --=20 Zijun Hu