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GET /api/1.1/patches/2226525/?format=api
{ "id": 2226525, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2226525/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/5abcac047ec9cb40cddca1d28c92ebb370ea3b9f.1776868550.git.bblock@linux.ibm.com/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/1.1/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<5abcac047ec9cb40cddca1d28c92ebb370ea3b9f.1776868550.git.bblock@linux.ibm.com>", "date": "2026-04-22T14:37:43", "name": "[v4,2/3] PCI: Provide lock guard for pci_rescan_remove_lock", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "b9d059fcd4a371e1c21b4909c8c713a9d0327488", "submitter": { "id": 91674, "url": "http://patchwork.ozlabs.org/api/1.1/people/91674/?format=api", "name": "Benjamin Block", "email": "bblock@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/5abcac047ec9cb40cddca1d28c92ebb370ea3b9f.1776868550.git.bblock@linux.ibm.com/mbox/", "series": [ { "id": 501022, "url": "http://patchwork.ozlabs.org/api/1.1/series/501022/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=501022", "date": "2026-04-22T14:37:42", "name": "PCI: s390/pci: Fix deadlocks on s390 when releasing zPCI-bus or -device objects", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/501022/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2226525/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2226525/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-pci+bounces-52980-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=U4cKQjv7;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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c=relaxed/relaxed; d=ibm.com; h=cc\n\t:content-transfer-encoding:date:from:in-reply-to:message-id\n\t:mime-version:references:sender:subject:to; s=pp1; bh=U7PquSzLk0\n\t46oRsJNtAhBNjD2BGpHFpbkUiQcZTx0Ng=; b=U4cKQjv7wvAWQ4DUJ1N25N5tY/\n\ts/EPwX5hopTycy+xf4WE+ei2TNcevjgS1Wol5iVIQWC9PWHpgB1v3dnmUB4e9gDP\n\tOe9hwsocvtZGfgq8frmdhTGzoUrZwUhLQI0hdRGx1WFi1txPjqSWagYMROauQ92P\n\td9HqNcShGl7DHK6LY5v0Z+Omq2LxTAox+B4PQ2ToYVT5MWFrVgReZaRIuxqZUQb/\n\t3GhwBEOVUDmIBk/llMeaB1JJGE/mau1t5iOEImQ/bG85dBdbSDfLBigDH+cqxSQe\n\tuLFWKc0YEmWMkCPQg7WhDLUtTyn7f8+e3NUTOgXm9xUH9wYeLLk2/qzp7B/Q==", "From": "Benjamin Block <bblock@linux.ibm.com>", "To": "Bjorn Helgaas <bhelgaas@google.com>", "Cc": "Niklas Schnelle <schnelle@linux.ibm.com>,\n Tobias Schumacher <ts@linux.ibm.com>,\n linux-s390 <linux-s390@vger.kernel.org>,\n Heiko Carstens <hca@linux.ibm.com>,\n Ionut Nechita <ionut_n2001@yahoo.com>,\n Sven Schnelle <svens@linux.ibm.com>,\n Ionut Nechita <ionut.nechita@windriver.com>,\n Farhan Ali <alifm@linux.ibm.com>,\n Alexander Gordeev <agordeev@linux.ibm.com>,\n Julian Ruess <julianr@linux.ibm.com>,\n Andreas Krebbel <krebbel@linux.ibm.com>,\n Gerd Bayer <gbayer@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>,\n linux-pci <linux-pci@vger.kernel.org>,\n linux-kernel <linux-kernel@vger.kernel.org>,\n Christian Borntraeger <borntraeger@linux.ibm.com>,\n Matthew Rosato <mjrosato@linux.ibm.com>,\n Benjamin Block <bblock@linux.ibm.com>", "Subject": "[PATCH v4 2/3] PCI: Provide lock guard for pci_rescan_remove_lock", "Date": "Wed, 22 Apr 2026 16:37:43 +0200", "Message-ID": "\n <5abcac047ec9cb40cddca1d28c92ebb370ea3b9f.1776868550.git.bblock@linux.ibm.com>", "X-Mailer": "git-send-email 2.54.0", "In-Reply-To": "<cover.1776868550.git.bblock@linux.ibm.com>", "References": "<cover.1776868550.git.bblock@linux.ibm.com>", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-pci+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Organization": "=?unknown-8bit?q?IBM_Deutschland_Research_=26_Development_GmbH?=\n\t=?unknown-8bit?q?=2C_https=3A//www=2Eibm=2Ecom/privacy=2C_Vors=2E_Aufs=2E-R?=\n\t=?unknown-8bit?q?=2E=3A_Wolfgang_Wendt=2C_Gesch=C3=A4ftsf=C3=BChrung=3A_Dav?=\n\t=?unknown-8bit?q?id_Faller=2E_Sitz_der_Ges=2E=3A_Ehningen=2C_Registergerich?=\n\t=?unknown-8bit?q?t=3A_AmtsG_Stuttgart=2C_HRB_243294?=", "Content-Transfer-Encoding": "8bit", "Sender": "Benjamin Block <bblock@linux.ibm.com>", "X-TM-AS-GCONF": "00", "X-Proofpoint-Reinject": "loops=2 maxloops=12", "X-Proofpoint-GUID": "_HN-b5r82uKwrSGAPkG3mqRl4X4r-lMh", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDIyMDEzOCBTYWx0ZWRfX88tvFuaP7FtK\n EQlEn03icKLLTLCFE10OmcUOUnZDa/15HG/EVwG8ontHRuEuU1Fa0QVrgLnDC0CRz3EtLglj9ER\n 567rueEcRqtwCVgKR6rSS+mwsoytNC9nZSGGoczslLlSpx71YXN3iXNHZ7PoHFAyG7CqlCPN+XN\n ykrMltySHiwgAwLIxq9jjbkn2xozlYDMgVDuVuNMCkGFgZf+Q0NTnPphMsIBm8QBfZNq7T47wnZ\n C8372HZgdNhfolm2w7Yjort5M1y1KZssi5sq6xfKYaUrh/O2tX9/jWi06VrjHzP/U8TqLNU93Js\n ZiH5G8+XLm58k7KQHInFqUX/tJ3cGDHsIyqNM23mYazlaZEbX63bg/jTlDCekWBdCTOjAqg47IR\n UJtaPdiKES28j4KNRFoj78w18HijNuVntCSNIXz1Fb4jAvNn4ErpWk2AI3+AF7HxeaIXtLcCKr9\n lYlHq71Jc4uYkVAO5OQ==", "X-Authority-Analysis": "v=2.4 cv=C8LZDwP+ c=1 sm=1 tr=0 ts=69e8dd3e cx=c_pps\n a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=qAR2Z3AMSIpdRBh0OscA:9", "X-Proofpoint-ORIG-GUID": "AYr71c6qmVbzrFp9zzEX8XpAbWIIf4LU", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-22_01,2026-04-21_02,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n adultscore=0 suspectscore=0 priorityscore=1501 malwarescore=0\n lowpriorityscore=0 clxscore=1015 bulkscore=0 impostorscore=0 spamscore=0\n phishscore=0 classifier=typeunknown authscore=0 authtc= authcc=\n route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000\n definitions=main-2604220138" }, "content": "Make it possible to use guard() or scoped_guard() to lock, and\nautomatically unlock `pci_rescan_remove_lock`.\n\nSince the actual mutex `pci_rescan_remove_lock` is always supposed to be\ntaken and released using the functions pci_lock_rescan_remove() and\npci_unlock_rescan_remove() it is not possible to simply use the already\nexisting guards for `struct mutex`. Instead define a new guard\n`pci_rescan_remove` that will also call the functions in question, but\nis usable via guard() or scoped_guard().\n\nReviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>\nSigned-off-by: Benjamin Block <bblock@linux.ibm.com>\n---\n include/linux/pci.h | 3 +++\n 1 file changed, 3 insertions(+)", "diff": "diff --git a/include/linux/pci.h b/include/linux/pci.h\nindex fd7a962a64ef..4c41b5a2c90a 100644\n--- a/include/linux/pci.h\n+++ b/include/linux/pci.h\n@@ -41,6 +41,7 @@\n #include <linux/msi_api.h>\n #include <linux/mutex.h>\n #include <uapi/linux/pci.h>\n+#include <linux/cleanup.h>\n \n #include <linux/pci_ids.h>\n \n@@ -1537,6 +1538,8 @@ unsigned int pci_rescan_bus(struct pci_bus *bus);\n extern struct mutex pci_rescan_remove_lock;\n void pci_lock_rescan_remove(void);\n void pci_unlock_rescan_remove(void);\n+DEFINE_LOCK_GUARD_0(pci_rescan_remove, pci_lock_rescan_remove(),\n+\t\t pci_unlock_rescan_remove());\n \n /* Vital Product Data routines */\n ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);\n", "prefixes": [ "v4", "2/3" ] }