{"id":2225837,"url":"http://patchwork.ozlabs.org/api/patches/2225837/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260421163031.704-4-alifm@linux.ibm.com/","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/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":"<20260421163031.704-4-alifm@linux.ibm.com>","list_archive_url":null,"date":"2026-04-21T16:30:27","name":"[v14,3/7] 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/people/73785/?format=json","name":"Farhan Ali","email":"alifm@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260421163031.704-4-alifm@linux.ibm.com/mbox/","series":[{"id":500852,"url":"http://patchwork.ozlabs.org/api/series/500852/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/list/?series=500852","date":"2026-04-21T16:30:25","name":"Error recovery for vfio-pci devices on s390x","version":14,"mbox":"http://patchwork.ozlabs.org/series/500852/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2225837/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2225837/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=BCHVM0yw;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=104.64.211.4; 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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=BCHVM0yw8Qmzrlang3L+Hw+iot0OUvli9\n\txo9dzeXWFx8ledpv7xTvIPCHdWN+vH4QnSOktbKiOz9OMBNiZUYi3LGYhIjeY73v\n\tfaii0lZKg+2+KTMFCAbroDOgBj7e5VodLldHXnY2KKCSo3x3T63tn1q6UqVC5aRX\n\tCJ9ey/a57Dvh7XiVhLWhbV59MsIO8sest7+AM+sVl8XC069hrg3UH6CwaTnWH1f8\n\tcYRXBJvS533POAYOVYwkqp4FHdP1q7HI0mfbTS+JkIldaFoADRjsSAUbV9DGJsUD\n\tTW+OA4QrkrwjXziac1ps+fEYAm1dvYGpJvXersRVmZDvHUJjq795w==","From":"Farhan Ali ","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 alifm@linux.ibm.com, schnelle@linux.ibm.com, mjrosato@linux.ibm.com,\n Benjamin Block ","Subject":"[PATCH v14 3/7] PCI: Fail FLR when config space is inaccessible","Date":"Tue, 21 Apr 2026 09:30:27 -0700","Message-ID":"<20260421163031.704-4-alifm@linux.ibm.com>","X-Mailer":"git-send-email 2.43.0","In-Reply-To":"<20260421163031.704-1-alifm@linux.ibm.com>","References":"<20260421163031.704-1-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-Authority-Analysis":"v=2.4 cv=L78theT8 c=1 sm=1 tr=0 ts=69e7a62f cx=c_pps\n a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=1owyFLT6pZZ0tE0DW5YA:9","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDIxMDE2MiBTYWx0ZWRfX1qt4z6e4rwcx\n 3Cu7a5lX/7BhY6068G5wF6hLQF9BrNx/ylImK2Akl2zDnKxUfALdm04jyBMgr3MFBhRSdz2CHvp\n PYEH/8uG3XAZh5dKGGEOGpKNMV958QaJlW0nmDkaEsjWpicTqHiBglYWz4KGcsam4OdDX+q9s7+\n +7pKEzgNmiuCGnapbnSAL+5XD/BP7gzEsvFYkt3RWH0Nfck44ad0WXfFuy0rPzm6CCAozJVxSyq\n m2DntoixeqPIndovFSg/0taTUeolE3MUEvMlSqnC2SQJLbYPLZdnx2sofCX5i8Y89BnMvy/SSco\n CatX/2CNeu+AKjIRLPE0kXslLOZDOIR7HodRnhlAJsvvXcpybV1RnI1M3WXkUoOB8WT6Coy9Pk2\n ojPTADrIcIuY5uz+Bh5qg/valK5mmVq2IaaI5V5C0BNVKCyM8JwuCDbnP0W3tHUGIupLbzCT76U\n gp7EHBLhFF6khuSwAOA==","X-Proofpoint-GUID":"dD6YWv8sIlTvTE2QbxKW59DUV8xbyODQ","X-Proofpoint-ORIG-GUID":"dD6YWv8sIlTvTE2QbxKW59DUV8xbyODQ","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=2026-04-21_03,2026-04-21_02,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n priorityscore=1501 impostorscore=0 spamscore=0 bulkscore=0 suspectscore=0\n lowpriorityscore=0 adultscore=0 clxscore=1015 malwarescore=0 phishscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604070000 definitions=main-2604210162"},"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":["v14","3/7"]}