{"id":2233163,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2233163/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260505200510.2954-4-alifm@linux.ibm.com/","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/1.2/projects/28/?format=json","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,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260505200510.2954-4-alifm@linux.ibm.com>","list_archive_url":null,"date":"2026-05-05T20:05:06","name":"[v15,3/7] PCI: Fail FLR when config space is inaccessible","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"a355180002f8673c4c7681faf735629c2063de7f","submitter":{"id":73785,"url":"http://patchwork.ozlabs.org/api/1.2/people/73785/?format=json","name":"Farhan Ali","email":"alifm@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260505200510.2954-4-alifm@linux.ibm.com/mbox/","series":[{"id":502892,"url":"http://patchwork.ozlabs.org/api/1.2/series/502892/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/list/?series=502892","date":"2026-05-05T20:05:06","name":"Error recovery for vfio-pci devices on s390x","version":15,"mbox":"http://patchwork.ozlabs.org/series/502892/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2233163/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2233163/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","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=BPut1Hq7;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c09:e001:a7::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=Xr+EsZK/+1s603aWr\n\t/wUgOxtfADRseSmWFfwoV44DZo=; b=BPut1Hq7jZfz2M0jvDpbpZ2AX1mu3CRgO\n\too/6TgoobGMxCrUpjVWIamDM5PsfkmL6blj/Xh0n9DVdbkJ/ZdkHWuf+XBbnvWUu\n\tgJCE/cOe2L8rm+rLupu08hS7dYKfgTD7Pm/0pu5ta10TcocMFiJk0F6s/chtkPEn\n\tLy4Sxf43kOEhHyP7MDiavZcWyPo1dHZoNxU6L1875GpapUICjv+NVqQreZDJJast\n\tSkK/oLdUAgUmDsDQKwikutrbxHIvWAiD7efhn6VRRIW8KXyCfRLbVma9JVJq5t9Y\n\t4qE2VWTKObSAY0wu9KULZM2e8HhcHKyY+HvKZC/ssUREdAyXEzodg==","From":"Farhan Ali ","To":"linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-pci@vger.kernel.org","Cc":"helgaas@kernel.org, alex@shazbot.org, alifm@linux.ibm.com,\n schnelle@linux.ibm.com, mjrosato@linux.ibm.com,\n Benjamin Block ","Subject":"[PATCH v15 3/7] PCI: Fail FLR when config space is inaccessible","Date":"Tue, 5 May 2026 13:05:06 -0700","Message-ID":"<20260505200510.2954-4-alifm@linux.ibm.com>","X-Mailer":"git-send-email 2.43.0","In-Reply-To":"<20260505200510.2954-1-alifm@linux.ibm.com>","References":"<20260505200510.2954-1-alifm@linux.ibm.com>","Precedence":"bulk","X-Mailing-List":"linux-pci@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-TM-AS-GCONF":"00","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNTA1MDE5MSBTYWx0ZWRfX3yzu4eLW6z1b\n 26U+V5XHOZ79cp6hfGz+j+RhU6BaER9xUo+gevrSGV+B9Bg5uPraSjSfbPtt5G91u7NkYXTlSDm\n XeHgmY+Aw9sPtjwsKcWXQE60+YGByFOeTfGhehitzIz/3PzVGWLpSuNh/ENdrfXda8tNZQKiHpE\n 9cb+TlFq/pph0UN9nrAVy82TALhp76coGYsX9I2rPwCWs5dLNsdQGHkRmAgRRRePSJSFdaNGiVG\n slaIICQE7ERKrk5Piw5nTNQ77nZh1LfVSdb8rwTD9dCENU54SbZuhPkOxzNOS56w9EM4/xaxvD3\n +5SkxQgOSoaYLnGt+cNlkEaLY1ftGhEef4WTe5wWxlZGVkUWTWZivsD9xlQs22gRuymDJ2/6EHd\n o87736BuACVkloo1BBhvXpbnqb62jSNm9iKMRv6yfBXw60IPLq9EYMcqET5ucxWayIZklDLrtL5\n 7a7T+5f/1/kHfWQGddA==","X-Proofpoint-ORIG-GUID":"NmbIbEEMgXt0UjmoIoeKxqXhpnQ-IRdz","X-Proofpoint-GUID":"NmbIbEEMgXt0UjmoIoeKxqXhpnQ-IRdz","X-Authority-Analysis":"v=2.4 cv=ctWrVV4i c=1 sm=1 tr=0 ts=69fa4d7b cx=c_pps\n a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17\n a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=V8glGbnc2Ofi9Qvn3v5h:22 a=VnNF1IyMAAAA:8 a=1owyFLT6pZZ0tE0DW5YA:9","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=2026-05-05_02,2026-04-30_02,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n priorityscore=1501 lowpriorityscore=0 adultscore=0 clxscore=1015\n suspectscore=0 impostorscore=0 spamscore=0 malwarescore=0 phishscore=0\n bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound\n adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000\n definitions=main-2605050191"},"content":"If a device is in an error state, then it's config space may not be\naccssible. Add additional check to validate if a device's config space is\naccessible before doing an FLR reset.\n\nReviewed-by: Benjamin Block \nReviewed-by: Niklas Schnelle \nSigned-off-by: Farhan Ali \n---\n drivers/pci/pci.c | 3 +++\n 1 file changed, 3 insertions(+)","diff":"diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c\nindex e71b81415392..c50418f5e318 100644\n--- a/drivers/pci/pci.c\n+++ b/drivers/pci/pci.c\n@@ -4396,6 +4396,9 @@ int pcie_reset_flr(struct pci_dev *dev, bool probe)\n \tif (!(dev->devcap & PCI_EXP_DEVCAP_FLR))\n \t\treturn -ENOTTY;\n \n+\tif (!pci_dev_config_accessible(dev, \"FLR\"))\n+\t\treturn -ENOTTY;\n+\n \tif (probe)\n \t\treturn 0;\n \n","prefixes":["v15","3/7"]}