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6fbf9e7a90
linux/drivers/pci
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Konrad Rzeszutek Wilk 6fbf9e7a90 PCI: Introduce __pci_reset_function_locked to be used when holding device_lock. 
The use case of this is when a driver wants to call FLR when a device
is attached to it using the SysFS "bind" or "unbind" functionality.

The call chain when a user does "bind" looks as so:

 echo "0000:01.07.0" > /sys/bus/pci/drivers/XXXX/bind

and ends up calling:
  driver_bind:
    device_lock(dev);  <=== TAKES LOCK
    XXXX_probe:
         .. pci_enable_device()
         ...__pci_reset_function(), which calls
                 pci_dev_reset(dev, 0):
                        if (!0) {
                                device_lock(dev) <==== DEADLOCK

The __pci_reset_function_locked function allows the the drivers
'probe' function to call the "pci_reset_function" while still holding
the driver mutex lock.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2012-02-14 08:44:48 -08:00
..
hotplug PCI: drivers/pci/hotplug/ibmphp_ebda.c: add missing iounmap 2012-02-14 08:44:47 -08:00
pcie module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
.gitignore
access.c PCI: Introduce INTx check & mask API 2012-01-06 12:10:34 -08:00
ats.c Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci 2012-01-11 18:50:26 -08:00
bus.c PCI: add helpers for building PCI bus resource lists 2012-01-06 12:10:50 -08:00
hotplug-pci.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
hotplug.c
htirq.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
ioapic.c pci, x86/io-apic: Allow PCI_IOAPIC to be user configurable on x86 2011-12-06 09:21:05 +01:00
iov.c PCI: set pci sriov page size before reading SRIOV BAR 2012-02-10 12:01:56 -08:00
irq.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
Kconfig pci, x86/io-apic: Allow PCI_IOAPIC to be user configurable on x86 2011-12-06 09:21:05 +01:00
Makefile PCI: Move ATS implementation into own file 2011-10-14 09:05:33 -07:00
msi.c x86/PCI: Expand the x86_msi_ops to have a restore MSIs. 2012-01-06 14:02:26 -08:00
msi.h PCI: MSI: Move MSI-X entry definition to pci_regs.h 2010-12-23 12:53:07 -08:00
of.c PCI: OF: Don't crash when bridge parent is NULL. 2011-08-19 08:51:37 -07:00
pci-acpi.c PCI/ACPI/PM: Avoid resuming devices that don't signal PME 2012-01-06 12:10:29 -08:00
pci-driver.c PCI: pci_has_legacy_pm_support add driver and device to WARN 2012-01-06 12:10:30 -08:00
pci-label.c switch ->is_visible() to returning umode_t 2012-01-03 22:54:55 -05:00
pci-stub.c PCI: pci-stub: ignore zero-length id parameters 2010-12-23 12:53:52 -08:00
pci-sysfs.c Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security 2012-01-14 18:36:33 -08:00
pci.c PCI: Introduce __pci_reset_function_locked to be used when holding device_lock. 2012-02-14 08:44:48 -08:00
pci.h PCI: Enable ATS at the device state restore 2012-01-06 12:11:18 -08:00
probe.c PCI: workaround hard-wired bus number V2 2012-02-10 11:34:42 -08:00
proc.c BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
quirks.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
remove.c PCI: Fix pci cardbus removal 2012-02-10 12:19:31 -08:00
rom.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
search.c PCI: use for_each_pci_dev() 2010-07-30 09:47:22 -07:00
setup-bus.c PCI: Make pci_setup_bridge() non-static for use by arch code 2011-10-14 09:05:29 -07:00
setup-irq.c PCI: Make the struct pci_dev * argument of pci_fixup_irqs const. 2011-07-22 08:26:06 -07:00
setup-res.c x86/PCI: Convert maintaining FW-assigned BIOS BAR values to use a list 2012-02-14 08:44:46 -08:00
slot.c pci: add module.h to files implicitly relying on its presence. 2011-10-31 19:31:23 -04:00
syscall.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
vpd.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
xen-pcifront.c Xen: consolidate and simplify struct xenbus_driver instantiation 2012-01-04 17:01:17 -05:00