From patchwork Tue Dec 3 00:33:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 13891545 Received: from pv50p00im-zteg10011501.me.com (pv50p00im-zteg10011501.me.com [17.58.6.42]) (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 C9D351E53A for ; Tue, 3 Dec 2024 00:35:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=17.58.6.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733186143; cv=none; b=Kqf1L9NradjIq2qA/ku6FMKysx3oDc1w2A+Ozcq0s3xvlnf3a4vwKf2JQeQuSK5MWXJEt8NUkS8XlJPhX0y/FXtE3nNEod59tAXV3KKKX+BZh0FS3uK7zxubhOpxEqVzCYy7P9uKpTdPD/hvIpYbC/tXYZxT/uFVZrJsAcZfDuk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733186143; c=relaxed/simple; bh=mhGW5nza1zBAU5kzhu4sAQhT0ZJVI8aus/YCa1u4NGI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GY8RqbGC0eNoWn/2TPUbKXND+2L5Bierl4m4AbCgeO5sII3eNVIydoYfFFsPuHh9Rk9eHLNAKkGHN4aKVA23DF6Sc3sXV17s7nuPlWpFbPoMtkFxX26sh86pThW5Ip/L0AKCTZu9yei8d5MaJEdIBIwktPdKILNs5Lg53CKPMBE= 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=Bxsl87hi; arc=none smtp.client-ip=17.58.6.42 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="Bxsl87hi" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1733186141; bh=bThfuEKMJ2yeRLOzuAumE4TWLmAXtORS0zcclnOkkGY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To: x-icloud-hme; b=Bxsl87hi/LMEx00JAt6MMJwYAvD9zQ0gEwUh88CRSz4N+CJRfhsZ6M6hw8j3eOYv1 yB/3tWXl9nKUPKrH+hWEEm26xHg+WCX1QJqaZOBqbQnM865oP9mUNYhBhqQ+t7VujY Kl8LRziRl19cjY4bIA6Du2Cmnb+AwXfNT0KrTB+XnH+mjzdD5wo9+y1c/fThhcwTh+ bhlUqF91E//f/6YGWlo8sbqhQ2YwXZ2d4n5Iw7g7iIiL9tfOxDIJ8rUsgslRTRh6eW UsnsgOYOGa1sBFz2S+FclxWkFJHvt7fJO02kBYXH4tDTvOKZRchgUcZW43NELUlj+F iP+CRYHo88cFQ== Received: from [192.168.1.26] (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-zteg10011501.me.com (Postfix) with ESMTPSA id 376F24A0394; Tue, 3 Dec 2024 00:35:20 +0000 (UTC) From: Zijun Hu Date: Tue, 03 Dec 2024 08:33:24 +0800 Subject: [PATCH v2 02/32] driver core: Introduce device_match_type() to match device with a device type Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241203-const_dfc_done-v2-2-7436a98c497f@quicinc.com> References: <20241203-const_dfc_done-v2-0-7436a98c497f@quicinc.com> In-Reply-To: <20241203-const_dfc_done-v2-0-7436a98c497f@quicinc.com> To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Chun-Kuang Hu , Philipp Zabel , David Airlie , Simona Vetter , Matthias Brugger , AngeloGioacchino Del Regno , Jean Delvare , Guenter Roeck , Martin Tuma , Mauro Carvalho Chehab , Andreas Noever , Michael Jamet , Mika Westerberg , Yehezkel Bernat , Linus Walleij , Bartosz Golaszewski , Andrew Lunn , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Dan Williams , Vishal Verma , Dave Jiang , Ira Weiny , Takashi Sakamoto , Jiri Slaby , Heikki Krogerus , Srinivas Kandagatla , Lee Duncan , Chris Leech , Mike Christie , "James E.J. Bottomley" , "Martin K. Petersen" , Nilesh Javali , Manish Rangankar , GR-QLogic-Storage-Upstream@marvell.com, Davidlohr Bueso , Jonathan Cameron , Alison Schofield , Andreas Larsson , Stuart Yoder , Laurentiu Tudor , Jens Axboe , Sudeep Holla , Cristian Marussi , Ard Biesheuvel , Bjorn Andersson , Mathieu Poirier Cc: Zijun Hu , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-hwmon@vger.kernel.org, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-pwm@vger.kernel.org, nvdimm@lists.linux.dev, linux1394-devel@lists.sourceforge.net, linux-serial@vger.kernel.org, linux-sound@vger.kernel.org, open-iscsi@googlegroups.com, linux-scsi@vger.kernel.org, linux-cxl@vger.kernel.org, sparclinux@vger.kernel.org, linux-block@vger.kernel.org, arm-scmi@vger.kernel.org, linux-efi@vger.kernel.org, linux-remoteproc@vger.kernel.org, Zijun Hu X-Mailer: b4 0.14.2 X-Proofpoint-GUID: pAk2LuCHu3_SWQxz-lZD6BvWYoJ4DRQY X-Proofpoint-ORIG-GUID: pAk2LuCHu3_SWQxz-lZD6BvWYoJ4DRQY 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=2024-12-02_14,2024-12-02_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 bulkscore=0 mlxlogscore=999 mlxscore=0 spamscore=0 suspectscore=0 malwarescore=0 clxscore=1015 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2308100000 definitions=main-2412030002 X-Apple-Remote-Links: v=1;h=KCk=;charset=UTF-8 From: Zijun Hu Introduce device_match_type() to simplify operations below: - Test if a device matches with specified device type. - Find a device with specified device type via various device finding APIs. device_find_child() will use it as argument to simplify operations later. 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 a122ea1d84a3b08fce16dd1abdfa7746d31dc430..5bda2edcd83149decd50bb5e9a0ed4267b1f8f6c 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -5239,6 +5239,12 @@ 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);