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Message-ID: <201707141015.bNU5lfUu%fengguang.wu@intel.com>
Date: Fri, 14 Jul 2017 11:19:21 +0800
From: kbuild test robot <lkp@...el.com>
To: Palmer Dabbelt <palmer@...belt.com>
Cc: kbuild-all@...org, Olof Johansson <olof@...om.net>,
Arnd Bergmann <arnd@...db.de>, akpm@...ux-foundation.org,
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will.deacon@....com, peterz@...radead.org, boqun.feng@...il.com,
mingo@...hat.com, daniel.lezcano@...aro.org, tglx@...utronix.de,
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gregkh@...uxfoundation.org, jslaby@...e.com, davem@...emloft.net,
mchehab@...nel.org, sfr@...b.auug.org.au, fweisbec@...il.com,
viro@...iv.linux.org.uk, mcgrof@...nel.org, dledford@...hat.com,
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daniel.vetter@...ll.ch, mpe@...erman.id.au, msalter@...hat.com,
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heiko.carstens@...ibm.com, schwidefsky@...ibm.com,
linux-kernel@...r.kernel.org, patches@...ups.riscv.org,
Palmer Dabbelt <palmer@...belt.com>
Subject: Re: [PATCH 02/17] pci: Add a generic, weakly-linked
pcibios_align_resource
Hi Palmer,
[auto build test ERROR on linus/master]
[also build test ERROR on next-20170713]
[cannot apply to v4.12]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Palmer-Dabbelt/lib-Add-shared-copies-of-some-GCC-library-routines/20170713-012253
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64
Note: the linux-review/Palmer-Dabbelt/lib-Add-shared-copies-of-some-GCC-library-routines/20170713-012253 HEAD ce846a13375e664242eedad789cb6e1c46d5ddd6 builds fine.
It only hurts bisectibility.
All errors (new ones prefixed by >>):
drivers/pci/probe.o: In function `pci_scan_child_bus':
>> drivers/pci/probe.c:2311: undefined reference to `pcibios_fixup_bus'
drivers/pci/probe.c:2311:(.text+0x2ffc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `pcibios_fixup_bus'
vim +2311 drivers/pci/probe.c
b03e7495a Jon Mason 2011-07-20 2290
15856ad50 Bill Pemberton 2012-11-21 2291 unsigned int pci_scan_child_bus(struct pci_bus *bus)
^1da177e4 Linus Torvalds 2005-04-16 2292 {
b918c62e0 Yinghai Lu 2012-05-17 2293 unsigned int devfn, pass, max = bus->busn_res.start;
^1da177e4 Linus Torvalds 2005-04-16 2294 struct pci_dev *dev;
^1da177e4 Linus Torvalds 2005-04-16 2295
0207c356e Bjorn Helgaas 2009-11-04 2296 dev_dbg(&bus->dev, "scanning bus\n");
^1da177e4 Linus Torvalds 2005-04-16 2297
^1da177e4 Linus Torvalds 2005-04-16 2298 /* Go find them, Rover! */
^1da177e4 Linus Torvalds 2005-04-16 2299 for (devfn = 0; devfn < 0x100; devfn += 8)
^1da177e4 Linus Torvalds 2005-04-16 2300 pci_scan_slot(bus, devfn);
^1da177e4 Linus Torvalds 2005-04-16 2301
a28724b0f Yu Zhao 2009-03-20 2302 /* Reserve buses for SR-IOV capability. */
a28724b0f Yu Zhao 2009-03-20 2303 max += pci_iov_bus_range(bus);
a28724b0f Yu Zhao 2009-03-20 2304
^1da177e4 Linus Torvalds 2005-04-16 2305 /*
^1da177e4 Linus Torvalds 2005-04-16 2306 * After performing arch-dependent fixup of the bus, look behind
^1da177e4 Linus Torvalds 2005-04-16 2307 * all PCI-to-PCI bridges on this bus.
^1da177e4 Linus Torvalds 2005-04-16 2308 */
74710ded8 Alex Chiang 2009-03-20 2309 if (!bus->is_added) {
0207c356e Bjorn Helgaas 2009-11-04 2310 dev_dbg(&bus->dev, "fixups for bus\n");
^1da177e4 Linus Torvalds 2005-04-16 @2311 pcibios_fixup_bus(bus);
74710ded8 Alex Chiang 2009-03-20 2312 bus->is_added = 1;
74710ded8 Alex Chiang 2009-03-20 2313 }
74710ded8 Alex Chiang 2009-03-20 2314
^1da177e4 Linus Torvalds 2005-04-16 2315 for (pass = 0; pass < 2; pass++)
^1da177e4 Linus Torvalds 2005-04-16 2316 list_for_each_entry(dev, &bus->devices, bus_list) {
6788a51fe Yijing Wang 2014-05-04 2317 if (pci_is_bridge(dev))
^1da177e4 Linus Torvalds 2005-04-16 2318 max = pci_scan_bridge(bus, dev, max, pass);
^1da177e4 Linus Torvalds 2005-04-16 2319 }
^1da177e4 Linus Torvalds 2005-04-16 2320
^1da177e4 Linus Torvalds 2005-04-16 2321 /*
e16b46605 Keith Busch 2016-07-21 2322 * Make sure a hotplug bridge has at least the minimum requested
e16b46605 Keith Busch 2016-07-21 2323 * number of buses.
e16b46605 Keith Busch 2016-07-21 2324 */
e16b46605 Keith Busch 2016-07-21 2325 if (bus->self && bus->self->is_hotplug_bridge && pci_hotplug_bus_size) {
e16b46605 Keith Busch 2016-07-21 2326 if (max - bus->busn_res.start < pci_hotplug_bus_size - 1)
e16b46605 Keith Busch 2016-07-21 2327 max = bus->busn_res.start + pci_hotplug_bus_size - 1;
e16b46605 Keith Busch 2016-07-21 2328 }
e16b46605 Keith Busch 2016-07-21 2329
e16b46605 Keith Busch 2016-07-21 2330 /*
^1da177e4 Linus Torvalds 2005-04-16 2331 * We've scanned the bus and so we know all about what's on
^1da177e4 Linus Torvalds 2005-04-16 2332 * the other side of any bridges that may be on this bus plus
^1da177e4 Linus Torvalds 2005-04-16 2333 * any devices.
^1da177e4 Linus Torvalds 2005-04-16 2334 *
^1da177e4 Linus Torvalds 2005-04-16 2335 * Return how far we've got finding sub-buses.
^1da177e4 Linus Torvalds 2005-04-16 2336 */
0207c356e Bjorn Helgaas 2009-11-04 2337 dev_dbg(&bus->dev, "bus scan returning with max=%02x\n", max);
^1da177e4 Linus Torvalds 2005-04-16 2338 return max;
^1da177e4 Linus Torvalds 2005-04-16 2339 }
b7fe94342 Ryan Desfosses 2014-04-25 2340 EXPORT_SYMBOL_GPL(pci_scan_child_bus);
^1da177e4 Linus Torvalds 2005-04-16 2341
:::::: The code at line 2311 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>
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