From patchwork Wed Dec 11 00:08:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 13902589 Received: from pv50p00im-ztdg10011901.me.com (pv50p00im-ztdg10011901.me.com [17.58.6.50]) (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 278B91DD0F6 for ; Wed, 11 Dec 2024 00:10:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=17.58.6.50 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733875855; cv=none; b=b7CFvAP60e9DxWqGKzYHPqhKEsPMyZ0WYr+Ioxx5tPu8Dn1AOrB/n8E57b1bYd2uqMc4CuQ5QCQpIZT7KSAYn/hwQpBkSRhg5MpdXvWPwOQnNPA9LZd8dQFZRvKEoLfbwCLe3cKVkq5OG4gIGIe3rvmEjZE64rnLZi8z2tEoRII= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733875855; c=relaxed/simple; bh=2hAoHPmKi8M7RtF7sC5dxcTk4Jak3PkyalgLRNozHoE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=C9DKV2lm8GqjxvU20PXcjK+tH5MOVMB3/sDY9WGuzU6z/75IQYqpFd/7nGekFL1dkVXg9wfrqlUZijm2maXH/rLzHRrkmeHww16oC3e7LMM/rLE3jZAjMJ49zlR9MufOjW5E0RNdaPohrcpaQY6zcbsaR0DWd5o88WI9oeZr6Pg= 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=wFZXjx1B; arc=none smtp.client-ip=17.58.6.50 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="wFZXjx1B" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1733875851; bh=jqsRJBKfSOaGGEJF6cLVoAsozLNhyHwMCTK1LKcdRqg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To: x-icloud-hme; b=wFZXjx1BDoAbhQx5mjkjCMbrHtOjWkPPm05EUPSiPcRgc4lVCYI5vz454d4bBnUMw BpfpyzVrtm3XG7t9+IqNWi6F6neqHszvmJiJh3hsazFofExG6MC/mJYU/4MfjTuOlq RXVbs7Rnf03Vyxd7P0TPACijIIai/F63a7GCWGrJdVBUeEEN3mMfi7CbgaE8jrIHYu 1wVu4NmvILqmxzXYcwpCVHGO4znPtMYs9mOnYGFkNe3klPgU2SymBFBbZXD1xRnwKN eCZtoDLcZJZ+Zw4Sv0+fToKi8JeKDCLL3bEAHML3rvNwwJGNQW/RrbSc9/AqRGfsty ZC3ns2F7g3tVg== Received: from [192.168.1.26] (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-ztdg10011901.me.com (Postfix) with ESMTPSA id 5432B3A0124; Wed, 11 Dec 2024 00:10:40 +0000 (UTC) From: Zijun Hu Date: Wed, 11 Dec 2024 08:08:11 +0800 Subject: [PATCH v4 09/11] driver core: Introduce an device matching API device_match_type() Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241211-const_dfc_done-v4-9-583cc60329df@quicinc.com> References: <20241211-const_dfc_done-v4-0-583cc60329df@quicinc.com> In-Reply-To: <20241211-const_dfc_done-v4-0-583cc60329df@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 X-Mailer: b4 0.14.2 X-Proofpoint-ORIG-GUID: 4N8rKl70cjGlT8X3ewp5uU3D_HULHiYB X-Proofpoint-GUID: 4N8rKl70cjGlT8X3ewp5uU3D_HULHiYB 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=2024-12-10_13,2024-12-10_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 bulkscore=0 phishscore=0 suspectscore=0 mlxscore=0 spamscore=0 mlxlogscore=999 clxscore=1015 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2308100000 definitions=main-2412100174 X-Apple-Remote-Links: v=1;h=KCk=;charset=UTF-8 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. 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);