From patchwork Tue Dec 24 13:05:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 13920005 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 26691E77188 for ; Tue, 24 Dec 2024 13:09:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9CFE410E485; Tue, 24 Dec 2024 13:09:01 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=icloud.com header.i=@icloud.com header.b="M7xRRJ5j"; dkim-atps=neutral Received: from pv50p00im-tydg10011801.me.com (pv50p00im-tydg10011801.me.com [17.58.6.52]) by gabe.freedesktop.org (Postfix) with ESMTPS id F020610E485 for ; Tue, 24 Dec 2024 13:09:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1735045740; bh=erbjjZhB2douri09I0i2ldgxqWL6bTpOhHwl8mpHl7o=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To: x-icloud-hme; b=M7xRRJ5jX9vLbEsOitYVmmHTSGUaX+sshkWGFu0txALItrq/wWXH9fqCsppVhxMdg Pkp9RIOf69SF5kC9IcSPP/KwWUueDzIeyG2kCQcS+yN10Fy1XV2/hclV2QlzQ7H5El 8pdLKfWTyRAPCCo4+c9JjScC4rsqGM9DzTl3nbS3Hm/f8owWjBOB/A9XnB58XyIPD8 M2yPsKSrvLbb974F3Fn+AHl9jFjEDaLn4g9CyjYDyhAHZ+rlRU+FWb2zkJ6DDdDUi/ g/Q6BNlsmYOyxb6FUUWaj3/cbETWDNdCSCb6IS03CB3ZUo2UDhbWkGC28JIvaSueeo PYrEBMThNQ9iw== Received: from [192.168.1.25] (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-tydg10011801.me.com (Postfix) with ESMTPSA id 350F380004D; Tue, 24 Dec 2024 13:08:43 +0000 (UTC) From: Zijun Hu Date: Tue, 24 Dec 2024 21:05:08 +0800 Subject: [PATCH v5 09/12] driver core: Introduce an device matching API device_match_type() MIME-Version: 1.0 Message-Id: <20241224-const_dfc_done-v5-9-6623037414d4@quicinc.com> References: <20241224-const_dfc_done-v5-0-6623037414d4@quicinc.com> In-Reply-To: <20241224-const_dfc_done-v5-0-6623037414d4@quicinc.com> To: Greg Kroah-Hartman Cc: Linus Walleij , Bartosz Golaszewski , =?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, linux-usb@vger.kernel.org, linux-serial@vger.kernel.org, netdev@vger.kernel.org, Zijun Hu , Jonathan Cameron X-Mailer: b4 0.14.2 X-Proofpoint-GUID: DZeI5aU7SNbuR5SofPdSN15JXAFu3F91 X-Proofpoint-ORIG-GUID: DZeI5aU7SNbuR5SofPdSN15JXAFu3F91 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=2024-12-24_05,2024-12-24_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 clxscore=1015 mlxscore=0 spamscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2308100000 definitions=main-2412240113 X-Apple-Remote-Links: v=1;h=KCk=;charset=UTF-8 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Zijun Hu Introduce device_match_type() for purposes below: - Test if a device matches with a specified device type. - As argument of various device finding APIs to find a device with specified type. device_find_child() will use it to simplify operations later. Reviewed-by: Jonathan Cameron Signed-off-by: Zijun Hu --- drivers/base/core.c | 6 ++++++ include/linux/device/bus.h | 1 + 2 files changed, 7 insertions(+) diff --git a/drivers/base/core.c b/drivers/base/core.c index 289f2dafa8f3831931d0f316d66ee12c2cb8a2e1..8bdbc9e657e832a063542391426f570ccb5c18b9 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -5228,6 +5228,12 @@ int device_match_name(struct device *dev, const void *name) } EXPORT_SYMBOL_GPL(device_match_name); +int device_match_type(struct device *dev, const void *type) +{ + return dev->type == type; +} +EXPORT_SYMBOL_GPL(device_match_type); + int device_match_of_node(struct device *dev, const void *np) { return dev->of_node == np; diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h index cdc4757217f9bb4b36b5c3b8a48bab45737e44c5..bc3fd74bb763e6d2d862859bd2ec3f0d443f2d7a 100644 --- a/include/linux/device/bus.h +++ b/include/linux/device/bus.h @@ -131,6 +131,7 @@ typedef int (*device_match_t)(struct device *dev, const void *data); /* Generic device matching functions that all busses can use to match with */ int device_match_name(struct device *dev, const void *name); +int device_match_type(struct device *dev, const void *type); int device_match_of_node(struct device *dev, const void *np); int device_match_fwnode(struct device *dev, const void *fwnode); int device_match_devt(struct device *dev, const void *pdevt);