[{"id":3674205,"web_url":"http://patchwork.ozlabs.org/comment/3674205/","msgid":"<177557111043.286575.12032515827207230571.b4-ty@b4>","list_archive_url":null,"date":"2026-04-07T14:11:50","subject":"Re: [PATCH v4 0/3] Skip subrange map tests on DWC iATU allocation\n failure","submitter":{"id":91273,"url":"http://patchwork.ozlabs.org/api/people/91273/","name":"Manivannan Sadhasivam","email":"manivannan.sadhasivam@oss.qualcomm.com"},"content":"On Tue, 07 Apr 2026 14:04:07 +0200, Christian Bruel wrote:\n> For platforms with a limited iATU inbound window entries, pci_epc_set_bar()\n> might fail to allocate the ATU entries for subrange maps requiring more\n> than 1 slot.\n> For the dwc controller, this failure is reported with -ENOSPC in\n> dw_pcie_ep_set_bar(). In this case, the epf test cannot be run and needs\n> to be skipped.\n> \n> [...]\n\nApplied, thanks!\n\n[1/3] PCI: endpoint: pci-epf-test: Handle -ENOSPC in subrange_setup\n commit: dfac277624c82b361dbb3e0fc57f577a270bebbb\n[2/3] misc: pci_endpoint_test: Handle -ENOSPC in subrange mapping test case\n commit: a51c75fc48c2a0d2ead2d7e8c521de0423ec8dec\n[3/3] selftests: pci_endpoint: Skip BAR subrange test on -ENOSPC\n commit: 2b729b7721bd4d0640b26790ea6c360c85a4af8c\n\nBest regards,","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=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=KJlEMdZ1;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=QIrCixAn;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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In this case, the epf test cannot be run and needs\n> > to be skipped.\n> > \n> > [...]\n> \n> Applied, thanks!\n> \n> [1/3] PCI: endpoint: pci-epf-test: Handle -ENOSPC in subrange_setup\n> commit: dfac277624c82b361dbb3e0fc57f577a270bebbb\n> [2/3] misc: pci_endpoint_test: Handle -ENOSPC in subrange mapping test case\n> commit: a51c75fc48c2a0d2ead2d7e8c521de0423ec8dec\n> [3/3] selftests: pci_endpoint: Skip BAR subrange test on -ENOSPC\n> commit: 2b729b7721bd4d0640b26790ea6c360c85a4af8c\n\nI squashed these together because they need to be understood together.\n\nI'm missing the details, but it seems unfortunate that the COMMAND_*,\nSTATUS_*, and CAP_* definitions have to be duplicated and presumably\nkept in sync in drivers/misc/pci_endpoint_test.c and\ndrivers/pci/endpoint/functions/pci-epf-test.c.","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=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=T3W8LQAm;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.105.105.114; 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