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Date: Thu, 31 Dec 2009 19:06:35 +0100
From: "Rafael J. Wysocki" <rjw@...k.pl>
To: Ingo Molnar <mingo@...e.hu>
Cc: Jesse Barnes <jbarnes@...tuousgeek.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [origin tree build failure] Re: [git pull] PCI fixes
On Thursday 31 December 2009, Ingo Molnar wrote:
>
> * Jesse Barnes <jbarnes@...tuousgeek.org> wrote:
>
> > The following changes since commit 8bea8672edfca7ec5f661cafb218f1205863b343:
> > Stephen Rothwell (1):
> > mfd: compile fix for twl4030 renaming
> >
> > are available in the git repository at:
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 for-linus
> >
> > A few misc fixes. A few people have run into the CLS bug so far, which Csaba
> > kindly provided a fix for (detection of PCI cache line size is a good
> > improvement, but it will fail in some cases due to a virtualized or buggy
> > platform).
> >
> > This set also adds the device specific reset quirk code from Dexuan;
> > needed for some devices especially in virtualized environments.
> >
> > Benjamin Herrenschmidt (1):
> > PCI/cardbus: Add a fixup hook and fix powerpc
> >
> > Csaba Henk (1):
> > PCI: Handle case when no pci device can provide cache line size hint
> >
> > Detlef Riekenberg (1):
> > vgaarbiter: fix a typo in the vgaarbiter Documentation
> >
> > Dexuan Cui (3):
> > PCI: support device-specific reset methods
> > PCI: add Intel USB specific reset method
> > PCI: add Intel 82599 Virtual Function specific reset method
> >
> > Jiri Slaby (1):
> > PCI: fix section mismatch on update_res()
> >
> > Rafael J. Wysocki (1):
> > PCI/PM: Propagate wake-up enable for PCIe devices too
> >
> > Stefan Assmann (2):
> > PCI: change PCI nomenclature in drivers/pci/ (comment changes)
> > PCI: change PCI nomenclature in drivers/pci/ (non-comment changes)
> >
> > Documentation/vgaarbiter.txt | 2 +-
> > arch/powerpc/kernel/pci-common.c | 13 +++++++
> > arch/x86/pci/bus_numa.c | 2 +-
> > drivers/pci/hotplug/shpchp.h | 2 +-
> > drivers/pci/intel-iommu.c | 6 ++--
> > drivers/pci/intr_remapping.c | 2 +-
> > drivers/pci/pci-acpi.c | 10 +----
> > drivers/pci/pci.c | 30 +++++++++++++++--
> > drivers/pci/pci.h | 8 ++++
> > drivers/pci/pcie/aer/Kconfig.debug | 4 +-
> > drivers/pci/pcie/aer/aer_inject.c | 6 ++--
> > drivers/pci/pcie/aer/aerdrv.c | 2 +-
> > drivers/pci/pcie/aer/aerdrv_acpi.c | 2 +-
> > drivers/pci/pcie/aer/aerdrv_core.c | 6 ++--
> > drivers/pci/pcie/aer/aerdrv_errprint.c | 4 +-
> > drivers/pci/pcie/aspm.c | 4 +-
> > drivers/pci/pcie/portdrv_pci.c | 2 +-
> > drivers/pci/quirks.c | 57 +++++++++++++++++++++++++++++++-
> > drivers/pci/search.c | 6 ++--
> > drivers/pcmcia/cardbus.c | 2 +-
> > include/linux/pci.h | 3 ++
> > 21 files changed, 135 insertions(+), 38 deletions(-)
>
> FYI, a commit in this tree broke today's -tip build on x86:
>
> drivers/built-in.o: In function `pci_dev_reset':
> pci.c:(.text+0x95ed): undefined reference to `pci_dev_reset_methods'
> pci.c:(.text+0x95fd): undefined reference to `pci_dev_reset_methods'
>
> I wont have time to bisect it today but wanted to give you a heads up.
This quite obviously is an upshot of
commit b9c3b266411d27f1a6466c19d146d08db576bfea
Author: Dexuan Cui <dexuan.cui@...el.com>
Date: Mon Dec 7 13:03:21 2009 +0800
PCI: support device-specific reset methods
and happens because you don't have CONFIG_PCI_QUIRKS defined in your
(random?) .configs.
The patch below should fix it.
Rafael
---
From: Rafael J. Wysocki <rjw@...k.pl>
Subject: PCI: Fix build if quirks are not enabled
After commit b9c3b266411d27f1a6466c19d146d08db576bfea
(PCI: support device-specific reset methods) kernel building is
broken if CONFIG_PCI_QUIRKS is unset.
Fix this by moving pci_dev_specific_reset() to drivers/pci/quirks.c
and providing an empty replacement for !CONFIG_PCI_QUIRKS builds.
Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
Reported-by: Ingo Molnar <mingo@...e.hu>
---
drivers/pci/pci.c | 15 ---------------
drivers/pci/pci.h | 2 +-
drivers/pci/quirks.c | 19 ++++++++++++++++++-
3 files changed, 19 insertions(+), 17 deletions(-)
Index: linux-2.6/drivers/pci/quirks.c
===================================================================
--- linux-2.6.orig/drivers/pci/quirks.c
+++ linux-2.6/drivers/pci/quirks.c
@@ -2684,14 +2684,31 @@ static int reset_intel_82599_sfp_virtfn(
#define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
-struct pci_dev_reset_methods pci_dev_reset_methods[] = {
+static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
reset_intel_82599_sfp_virtfn },
{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
reset_intel_generic_dev },
{ 0 }
};
+
+int pci_dev_specific_reset(struct pci_dev *dev, int probe)
+{
+ struct pci_dev_reset_methods *i;
+
+ for (i = pci_dev_reset_methods; i->reset; i++) {
+ if ((i->vendor == dev->vendor ||
+ i->vendor == (u16)PCI_ANY_ID) &&
+ (i->device == dev->device ||
+ i->device == (u16)PCI_ANY_ID))
+ return i->reset(dev, probe);
+ }
+
+ return -ENOTTY;
+}
+
#else
void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) {}
+int pci_dev_specific_reset(struct pci_dev *dev, int probe) { return -ENOTTY; }
#endif
EXPORT_SYMBOL(pci_fixup_device);
Index: linux-2.6/drivers/pci/pci.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci.c
+++ linux-2.6/drivers/pci/pci.c
@@ -2430,21 +2430,6 @@ static int pci_parent_bus_reset(struct p
return 0;
}
-static int pci_dev_specific_reset(struct pci_dev *dev, int probe)
-{
- struct pci_dev_reset_methods *i;
-
- for (i = pci_dev_reset_methods; i->reset; i++) {
- if ((i->vendor == dev->vendor ||
- i->vendor == (u16)PCI_ANY_ID) &&
- (i->device == dev->device ||
- i->device == (u16)PCI_ANY_ID))
- return i->reset(dev, probe);
- }
-
- return -ENOTTY;
-}
-
static int pci_dev_reset(struct pci_dev *dev, int probe)
{
int rc;
Index: linux-2.6/drivers/pci/pci.h
===================================================================
--- linux-2.6.orig/drivers/pci/pci.h
+++ linux-2.6/drivers/pci/pci.h
@@ -328,6 +328,6 @@ struct pci_dev_reset_methods {
int (*reset)(struct pci_dev *dev, int probe);
};
-extern struct pci_dev_reset_methods pci_dev_reset_methods[];
+extern int pci_dev_specific_reset(struct pci_dev *dev, int probe);
#endif /* DRIVERS_PCI_H */
--
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