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42eca23021
linux/drivers/pci
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Dave Airlie 42eca23021 PCI: Don't touch card regs after runtime suspend D3 
If the driver takes care of state saving, don't touch any registers on it.

Optimus (dual-gpu) laptops seem to have their own form of D3cold, but
unfortunately enter it on normal D3 transitions via the ACPI callback.

So when we use runtime PM to transition to D3, the card disappears off
the PCI bus, however we then try to access registers on it in the
runtime suspend finish, which really doesn't work.

This patch checks whether the pci state is saved and doesn't attempt to hit
any registers after that point if it is.

(Looks okay to Rafael)

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-11-07 15:24:18 -07:00
..
hotplug Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-10-06 03:16:12 +09:00
pcie Merge commit 'v3.6-rc5' into pci/gavin-window-alignment 2012-09-13 15:54:57 -06:00
access.c PCI: Add accessors for PCI Express Capability 2012-08-23 09:41:20 -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: Use correct type when freeing bus resource list 2012-09-18 16:50:33 -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
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 Revert "PCI: Use hotplug-safe pci_get_domain_bus_and_slot()" 2012-09-20 17:10:54 -06:00
irq.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
Kconfig PCI: Drop bogus default from ARCH_SUPPORTS_MSI 2012-09-10 16:49:52 -06:00
Makefile PCI: build resource code for M68K architecture 2012-07-13 09:40:37 -06:00
msi.c x86/PCI: Expand the x86_msi_ops to have a restore MSIs. 2012-01-06 14:02:26 -08:00
msi.h
of.c PCI: OF: Don't crash when bridge parent is NULL. 2011-08-19 08:51:37 -07:00
pci-acpi.c PCI / PM: Fix D3/D3cold/D4 messages printed by acpi_pci_set_power_state() 2012-08-15 11:46:18 -06:00
pci-driver.c PCI: Don't touch card regs after runtime suspend D3 2012-11-07 15:24:18 -07:00
pci-label.c switch ->is_visible() to returning umode_t 2012-01-03 22:54:55 -05:00
pci-stub.c
pci-sysfs.c PCI/PM: Fix config reg access for D3cold and bridge suspending 2012-08-21 17:34:24 -06:00
pci.c Merge commit 'v3.6-rc5' into pci/gavin-window-alignment 2012-09-13 15:54:57 -06:00
pci.h Merge branch 'pci/rafael-pci_set_power_state-rebase' into next 2012-07-05 16:29:52 -06:00
probe.c Merge branch 'pci/yinghai-misc' into next 2012-09-24 17:24:11 -06:00
proc.c PCI: Remove unused, commented-out, code 2012-08-22 11:31:53 -06:00
quirks.c PCI: Wait for pending transactions to complete before 82599 FLR 2012-08-23 10:11:11 -06:00
remove.c PCI: Stop all children first, before removing all children 2012-09-20 17:37:23 -06:00
rom.c PCI: Remove unused, commented-out, code 2012-08-22 11:31:53 -06:00
search.c Merge branch 'pci/feng-avoid-kmalloc' into next 2012-09-10 16:31:08 -06:00
setup-bus.c PCI: Refactor pbus_size_mem() 2012-09-11 16:59:46 -06:00
setup-irq.c PCI: Provide a default pcibios_update_irq() 2012-09-18 17:28:21 -06:00
setup-res.c Merge branch 'pci/nikhil-big-bar-fixes' into next 2012-07-18 14:06:20 -06:00
slot.c pci: add module.h to files implicitly relying on its presence. 2011-10-31 19:31:23 -04:00
syscall.c
vpd.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
xen-pcifront.c Features: 2012-10-02 22:09:10 -07:00