{"id":2224069,"url":"http://patchwork.ozlabs.org/api/patches/2224069/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260416180107.777065-16-kwilczynski@kernel.org/","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":"<20260416180107.777065-16-kwilczynski@kernel.org>","list_archive_url":null,"date":"2026-04-16T18:00:59","name":"[v5,15/23] alpha/PCI: Remove WARN from __pci_mmap_fits()","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"6955ab90c594ec0037a2a98a3aa2647bac325064","submitter":{"id":86709,"url":"http://patchwork.ozlabs.org/api/people/86709/?format=json","name":"Krzysztof Wilczyński","email":"kwilczynski@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260416180107.777065-16-kwilczynski@kernel.org/mbox/","series":[{"id":500193,"url":"http://patchwork.ozlabs.org/api/series/500193/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/list/?series=500193","date":"2026-04-16T18:00:44","name":"PCI: Convert all dynamic sysfs attributes to static","version":5,"mbox":"http://patchwork.ozlabs.org/series/500193/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2224069/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2224069/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=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=OAOaoPkz;\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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charset=UTF-8","Content-Transfer-Encoding":"8bit"},"content":"Remove the WARN() that fires when userspace attempts to mmap beyond\nthe BAR bounds. The check still returns 0 to reject the mapping,\nbut the warning is excessive for normal operation.\n\nA similar warning was removed from the PCI core in the commit\n3b519e4ea618 (\"PCI: fix size checks for mmap() on /proc/bus/pci files\").\n\nTested-by: Magnus Lindholm \nReviewed-by: Ilpo Järvinen \nAcked-by: Magnus Lindholm \nSigned-off-by: Krzysztof Wilczyński \n---\n arch/alpha/kernel/pci-sysfs.c | 8 +-------\n 1 file changed, 1 insertion(+), 7 deletions(-)","diff":"diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c\nindex 8802f955256e..f2ee737c588c 100644\n--- a/arch/alpha/kernel/pci-sysfs.c\n+++ b/arch/alpha/kernel/pci-sysfs.c\n@@ -48,13 +48,7 @@ static int __pci_mmap_fits(struct pci_dev *pdev, int num,\n \tstart = vma->vm_pgoff;\n \tsize = ((len - 1) >> (PAGE_SHIFT - shift)) + 1;\n \n-\tif (start < size && size - start >= nr)\n-\t\treturn 1;\n-\tWARN(1, \"process \\\"%s\\\" tried to map%s 0x%08lx-0x%08lx on %s BAR %d \"\n-\t\t\"(size 0x%08lx)\\n\",\n-\t\tcurrent->comm, sparse ? \" sparse\" : \"\", start, start + nr,\n-\t\tpci_name(pdev), num, size);\n-\treturn 0;\n+\treturn start < size && size - start >= nr;\n }\n \n /**\n","prefixes":["v5","15/23"]}