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GET /api/1.0/patches/2197372/?format=api
{ "id": 2197372, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2197372/?format=api", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/1.0/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": "<20260217182257.1582-5-alifm@linux.ibm.com>", "date": "2026-02-17T18:22:52", "name": "[v9,4/9] PCI: Add additional checks for flr reset", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5e00f15bd8e8f841ed82091f45f6d54a9cad5a13", "submitter": { "id": 73785, "url": "http://patchwork.ozlabs.org/api/1.0/people/73785/?format=api", "name": "Farhan Ali", "email": "alifm@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260217182257.1582-5-alifm@linux.ibm.com/mbox/", "series": [ { "id": 492470, "url": "http://patchwork.ozlabs.org/api/1.0/series/492470/?format=api", "date": "2026-02-17T18:22:49", "name": "Error recovery for vfio-pci devices on s390x", "version": 9, "mbox": "http://patchwork.ozlabs.org/series/492470/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197372/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-pci+bounces-47500-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=WU5Fib4I;\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:subject:to; s=pp1; bh=9h1TT/s2NziYpsxx+\n\tDjjI2cbosM+B1a21s+AOqeVmp4=; b=WU5Fib4Iu6AjoHgy/3CqDRev5qagUf8OY\n\tHhe0seMrW/Jp4JqbDBPizJufRAYwzfZJyz333DyVE8ECBHXCxZTTvhzhuBJMsY+3\n\tDavvpeK4S695olRnWpHeqNDaCyb0YunaoU7sQKNqcUj4k1qTjr7XS2NyMRPnhM1D\n\tnSvkp3GtiXtne4W9+xh42MZoEaZKiyHLcanrvHwpIH8mC+zIUPcEsfx09lS0OPT/\n\tg07zZl+TvUY8jFt7UBbJYEk8Qi2exjyBWH/rp4PDtn+9TlNr1EPCPsQkx6OUm6yi\n\tANoDumPAmu5t2ye9alH63+94ixuQT4Zfues64A5szxRuMlCDw505A==", "From": "Farhan Ali <alifm@linux.ibm.com>", "To": "linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-pci@vger.kernel.org", "Cc": "helgaas@kernel.org, lukas@wunner.de, alex@shazbot.org, clg@redhat.com,\n stable@vger.kernel.org, alifm@linux.ibm.com, schnelle@linux.ibm.com,\n mjrosato@linux.ibm.com, Benjamin Block <bblock@linux.ibm.com>", "Subject": "[PATCH v9 4/9] PCI: Add additional checks for flr reset", "Date": "Tue, 17 Feb 2026 10:22:52 -0800", "Message-ID": "<20260217182257.1582-5-alifm@linux.ibm.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260217182257.1582-1-alifm@linux.ibm.com>", "References": "<20260217182257.1582-1-alifm@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", "Content-Transfer-Encoding": "8bit", "X-TM-AS-GCONF": "00", "X-Authority-Analysis": "v=2.4 cv=dvvWylg4 c=1 sm=1 tr=0 ts=6994b209 cx=c_pps\n a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17\n a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22\n a=GgsMoib0sEa3-_RKJdDe:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8\n a=_COy7Z8VS3VoYlkUqhYA:9", "X-Proofpoint-GUID": "kKPV7CYnKBboefQhCBwdR0tGXffE4dwJ", "X-Proofpoint-ORIG-GUID": "kKPV7CYnKBboefQhCBwdR0tGXffE4dwJ", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwMjE3MDE0OCBTYWx0ZWRfX/uIpRuXbB/Cc\n j40p+vOknCXeBikRypy02x+wGOft/v869YCl9JD3X8NOJwp6U8YMV4ekYnE34WSWt3mdrxFseW/\n 4o+fEJGSBxSunixp3fyK0i3onJg++/0lX0EgO8K1lEgJAsAWSgPPxphVN34R84ay+YZoCvcrwwg\n eSFcuktqGH68MjmXkKcGWnsaywNKE3PbThsxitfJLhwbB/+7r5tXErYtDuyu3L2ODnO7uc05Qwj\n eRP7E2UHPBniDwXlyyesjhlq0IbzUvjzHSeiYs3p9k2a9P6ejU95gX9Yzv5MH2VnecUx6vkntxr\n Er4xjJ1Qq7VHZUqICeT2r5Mc94pZUkxvx+iak7stUPHYiPO2FMTATyDthOfeZvcz4VusXxOTwG6\n ozf6FK1yqKYQwi6+fwHF697SlFt8cgBNu3BlEw17AtjhPnsLuFXfp2qq7GMAM86RkId8GrmHSNz\n /J+2UjmfVTf3UaOwVlw==", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-02-17_03,2026-02-16_04,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n spamscore=0 lowpriorityscore=0 impostorscore=0 adultscore=0\n priorityscore=1501 clxscore=1015 malwarescore=0 phishscore=0 suspectscore=0\n bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound\n adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000\n definitions=main-2602170148" }, "content": "If a device is in an error state, then any reads of device registers can\nreturn error value. Add addtional checks to validate if a device is in an\nerror state before doing an flr reset.\n\nCc: stable@vger.kernel.org\nReviewed-by: Benjamin Block <bblock@linux.ibm.com>\nReviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>\nSigned-off-by: Farhan Ali <alifm@linux.ibm.com>\n---\n drivers/pci/pci.c | 7 +++++++\n 1 file changed, 7 insertions(+)", "diff": "diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c\nindex 2242b97e7d46..d867db7188d0 100644\n--- a/drivers/pci/pci.c\n+++ b/drivers/pci/pci.c\n@@ -4373,12 +4373,19 @@ EXPORT_SYMBOL_GPL(pcie_flr);\n */\n int pcie_reset_flr(struct pci_dev *dev, bool probe)\n {\n+\tu32 reg;\n+\n \tif (dev->dev_flags & PCI_DEV_FLAGS_NO_FLR_RESET)\n \t\treturn -ENOTTY;\n \n \tif (!(dev->devcap & PCI_EXP_DEVCAP_FLR))\n \t\treturn -ENOTTY;\n \n+\tif (pcie_capability_read_dword(dev, PCI_EXP_DEVCAP, ®)) {\n+\t\tpci_warn(dev, \"Device unable to do an FLR\\n\");\n+\t\treturn -ENOTTY;\n+\t}\n+\n \tif (probe)\n \t\treturn 0;\n \n", "prefixes": [ "v9", "4/9" ] }