linux/drivers/pci
Yinghai Lu f41f064cf4 PCI: Workaround missing pci_set_master in pci drivers
Ben Herrenschmidt found that commit 928bea9648 ("PCI: Delay enabling
bridges until they're needed") breaks PCI in some powerpc environments.

The reason is that the PCIe port driver will call pci_enable_device() on
the bridge, so the device is enabled, but skips pci_set_master because
pcie_port_auto and no acpi on powerpc.

Because of that, pci_enable_bridge() later on (called as a result of the
child device driver doing pci_enable_device) will see the bridge as
already enabled and will not call pci_set_master() on it.

Fixed by add checking in pci_enable_bridge, and call pci_set_master
if driver skip that.

That will make the code more robot and wade off problem for missing
pci_set_master in drivers.

Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-28 13:25:30 -07:00
..
host ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
hotplug Merge branch 'acpi-pci-hotplug' 2013-09-10 23:15:02 +02:00
pcie PCI changes for the v3.12 merge window: 2013-09-03 16:24:35 -07:00
access.c PCI: Remove pcie_cap_has_devctl() 2013-08-28 20:51:39 -06:00
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: Delay enabling bridges until they're needed 2013-07-25 12:35:03 -06:00
host-bridge.c PCI: add host bridge release support 2012-04-30 14:52:43 -06:00
hotplug-pci.c PCI: hotplug: remove pci_do_scan_bus() 2012-06-13 15:42:27 -06:00
htirq.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
ioapic.c PCI: Convert ioapic.c to module_pci_driver 2013-05-27 17:05:28 -06:00
iov.c PCI: Return -ENOSYS for SR-IOV operations on non-SR-IOV devices 2013-07-31 16:47:56 -06:00
irq.c PCI: Convert dev_printk(KERN_<LEVEL> to dev_<level>( 2012-11-07 15:24:18 -07:00
Kconfig PCI: remove ARCH_SUPPORTS_MSI kconfig option 2013-08-12 15:26:48 +00:00
Makefile pci: PCIe driver for Marvell Armada 370/XP systems 2013-05-20 19:18:44 +00:00
msi.c Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
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: Clear pme_poll for devices in D3cold on wakeup 2013-09-20 00:24:43 +02:00
pci-driver.c PCI: Add pcibios_pm_ops for optional arch-specific hibernate functionality 2013-08-22 14:11:32 -06:00
pci-label.c switch ->is_visible() to returning umode_t 2012-01-03 22:54:55 -05:00
pci-stub.c PCI: Convert dev_printk(KERN_<LEVEL> to dev_<level>( 2012-11-07 15:24:18 -07:00
pci-sysfs.c PCI: Convert class code to use dev_groups 2013-07-25 12:18:42 -06:00
pci.c PCI: Workaround missing pci_set_master in pci drivers 2013-09-28 13:25:30 -07:00
pci.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-09-05 14:54:29 -07:00
probe.c ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
proc.c pci/proc: switch to fixed_size_llseek() 2013-06-29 12:57:48 +04:00
quirks.c Merge branch 'pci/vipul-chelsio-reset-v2' into next 2013-08-12 15:07:03 -06:00
remove.c PCI: Add pcibios hooks for adding and removing PCI buses 2013-04-12 15:38:25 -06:00
rom.c PCI: Add PCI ROM helper for platform-provided ROM images 2013-03-26 17:19:41 -06:00
search.c PCI: Fix reference count leak in pci_dev_present() 2013-01-25 13:49:27 -07:00
setup-bus.c PCI changes for the v3.12 merge window: 2013-09-03 16:24:35 -07:00
setup-irq.c PCI: Provide a default pcibios_update_irq() 2012-09-18 17:28:21 -06:00
setup-res.c PCI: Remove unused variables 2013-04-15 10:56:27 -06:00
slot.c PCI: Warn about failures instead of "must_check" functions 2013-04-17 10:21:12 -06:00
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/pcifront: Deal with toolstack missing 'XenbusStateClosing' state. 2013-06-14 12:28:59 -04:00