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Date: Sun, 23 Apr 2017 17:10:55 -0700
From: Guenter Roeck <linux@roeck-us.net>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>, Arnd Bergmann <arnd@arndb.de>,
        Will Deacon <will.deacon@arm.com>,
        Russell King <linux@armlinux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        linux-kernel@vger.kernel.org
Subject: Build failures in -next due to 'linux/io.h: Add pci_remap_cfgspace()
 interface'
Message-ID: <20170424001055.GA1549@roeck-us.net>
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Hi,

-next fails to build for several architectures due to commit 'linux/io.h: Add
pci_remap_cfgspace() interface'. Error message is

include/linux/io.h: In function ‘pci_remap_cfgspace’:
include/linux/io.h:108:9: error: implicit declaration of function ‘ioremap_nocache’

Affected architectures (not necessarily a complete list):

um
score
s390

Bisect results for s390 and score are below. I did not bother to bisect
the um build; the error message is the same.

Guenter

---
# bad: [26e01a6fde2542bb020aa303787f8a57c49f5f37] Add linux-next specific files for 20170421
# good: [4f7d029b9bf009fbee76bb10c0c4351a1870d2f3] Linux 4.11-rc7
git bisect start 'HEAD' 'v4.11-rc7'
# bad: [6ab7468a254dabc88e73476b8fe9fee6d63041e1] Merge remote-tracking branch 'crypto/master'
git bisect bad 6ab7468a254dabc88e73476b8fe9fee6d63041e1
# bad: [140ff2fd79c3861f55628d9f9301dcf636f48371] Merge remote-tracking branch 'jc_docs/docs-next'
git bisect bad 140ff2fd79c3861f55628d9f9301dcf636f48371
# good: [972acb605b68d29d0914df41e75c1e549fb4dd4a] Merge remote-tracking branch 'arm64/for-next/core'
git bisect good 972acb605b68d29d0914df41e75c1e549fb4dd4a
# good: [dea37da5bb4803b7de2f1498d14f07444ca1adf3] Merge remote-tracking branch 'jfs/jfs-next'
git bisect good dea37da5bb4803b7de2f1498d14f07444ca1adf3
# bad: [f06a6bdb92e219efc51cdc36712596d713a1e8d4] Merge remote-tracking branch 'pci/next'
git bisect bad f06a6bdb92e219efc51cdc36712596d713a1e8d4
# good: [ef9daebd5027ace3669892d99536ca282af6fd54] Merge remote-tracking branch 'vfs/for-next'
git bisect good ef9daebd5027ace3669892d99536ca282af6fd54
# good: [9adda97fba38ebd3e28c8af226bc30ac6c9958ac] Merge branch 'pci/iommu' into next
git bisect good 9adda97fba38ebd3e28c8af226bc30ac6c9958ac
# bad: [7e8d8865f9a94ee1d811c2d689885296110f4fa5] Merge branch 'pci/pm' into next
git bisect bad 7e8d8865f9a94ee1d811c2d689885296110f4fa5
# bad: [64dad3832f071c309d07c379da26a73629d70373] PCI: keystone-dw: Update PCI config space remap function
git bisect bad 64dad3832f071c309d07c379da26a73629d70373
# bad: [1702b2c077780d0c2826c596f4910560d9c3cc9b] PCI: spear13xx: Update PCI config space remap function
git bisect bad 1702b2c077780d0c2826c596f4910560d9c3cc9b
# bad: [8f92689d79801a66919c0cb99b677dded3fc9ca7] devres: fix devm_ioremap_*() offset parameter kerneldoc description
git bisect bad 8f92689d79801a66919c0cb99b677dded3fc9ca7
# bad: [db1534d0f2047bcb19f3c39ef7feeeb6c8c88fc3] linux/io.h: Add pci_remap_cfgspace() interface
git bisect bad db1534d0f2047bcb19f3c39ef7feeeb6c8c88fc3
# good: [7b309aef0463340d3ad5449d1f605d14e10a4225] PCI: Remove __weak tag from pci_remap_iospace()
git bisect good 7b309aef0463340d3ad5449d1f605d14e10a4225
# first bad commit: [db1534d0f2047bcb19f3c39ef7feeeb6c8c88fc3] linux/io.h: Add pci_remap_cfgspace() interface

---
# bad: [26e01a6fde2542bb020aa303787f8a57c49f5f37] Add linux-next specific files for 20170421
# good: [4f7d029b9bf009fbee76bb10c0c4351a1870d2f3] Linux 4.11-rc7
git bisect start 'HEAD' 'v4.11-rc7'
# bad: [6ab7468a254dabc88e73476b8fe9fee6d63041e1] Merge remote-tracking branch 'crypto/master'
git bisect bad 6ab7468a254dabc88e73476b8fe9fee6d63041e1
# bad: [140ff2fd79c3861f55628d9f9301dcf636f48371] Merge remote-tracking branch 'jc_docs/docs-next'
git bisect bad 140ff2fd79c3861f55628d9f9301dcf636f48371
# good: [972acb605b68d29d0914df41e75c1e549fb4dd4a] Merge remote-tracking branch 'arm64/for-next/core'
git bisect good 972acb605b68d29d0914df41e75c1e549fb4dd4a
# good: [dea37da5bb4803b7de2f1498d14f07444ca1adf3] Merge remote-tracking branch 'jfs/jfs-next'
git bisect good dea37da5bb4803b7de2f1498d14f07444ca1adf3
# bad: [f06a6bdb92e219efc51cdc36712596d713a1e8d4] Merge remote-tracking branch 'pci/next'
git bisect bad f06a6bdb92e219efc51cdc36712596d713a1e8d4
# good: [ef9daebd5027ace3669892d99536ca282af6fd54] Merge remote-tracking branch 'vfs/for-next'
git bisect good ef9daebd5027ace3669892d99536ca282af6fd54
# good: [9adda97fba38ebd3e28c8af226bc30ac6c9958ac] Merge branch 'pci/iommu' into next
git bisect good 9adda97fba38ebd3e28c8af226bc30ac6c9958ac
# bad: [7e8d8865f9a94ee1d811c2d689885296110f4fa5] Merge branch 'pci/pm' into next
git bisect bad 7e8d8865f9a94ee1d811c2d689885296110f4fa5
# bad: [64dad3832f071c309d07c379da26a73629d70373] PCI: keystone-dw: Update PCI config space remap function
git bisect bad 64dad3832f071c309d07c379da26a73629d70373
# bad: [1702b2c077780d0c2826c596f4910560d9c3cc9b] PCI: spear13xx: Update PCI config space remap function
git bisect bad 1702b2c077780d0c2826c596f4910560d9c3cc9b
# bad: [8f92689d79801a66919c0cb99b677dded3fc9ca7] devres: fix devm_ioremap_*() offset parameter kerneldoc description
git bisect bad 8f92689d79801a66919c0cb99b677dded3fc9ca7
# bad: [db1534d0f2047bcb19f3c39ef7feeeb6c8c88fc3] linux/io.h: Add pci_remap_cfgspace() interface
git bisect bad db1534d0f2047bcb19f3c39ef7feeeb6c8c88fc3
# good: [7b309aef0463340d3ad5449d1f605d14e10a4225] PCI: Remove __weak tag from pci_remap_iospace()
git bisect good 7b309aef0463340d3ad5449d1f605d14e10a4225
# first bad commit: [db1534d0f2047bcb19f3c39ef7feeeb6c8c88fc3] linux/io.h: Add pci_remap_cfgspace() interface