Keith Busch 4b10388347 PCI: Don't attempt config access to disconnected devices ... If we've detected the PCI device is disconnected, there is no need to attempt to access its config space since we know the operation will fail. Make all the config reads and writes return -ENODEV error immediately when in such a state. If a caller requests a config read to a disconnected device, return a data value of all 1's. This is the same as what hardware is expected to return when accessing a removed device, but software can do this faster without relying on hardware. Tested-by: Krishna Dhulipala <krishnad@fb.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Wei Zhang <wzhang@fb.com>		2017-03-29 22:54:56 -05:00
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dwc	PCI: dwc: Fix crashes seen due to missing assignments	2017-02-25 09:06:02 -06:00
host	pci-v4.11-fixes-1	2017-03-03 16:44:21 -08:00
hotplug	PCI: Add device disconnected state	2017-03-29 22:54:46 -05:00
pcie	PCI: Add device disconnected state	2017-03-29 22:54:46 -05:00
access.c	PCI: Don't attempt config access to disconnected devices	2017-03-29 22:54:56 -05:00
ats.c	PCI: Remove pci_ats_enabled()	2015-08-13 15:59:59 -05:00
bus.c	PCI: Autosense device removal in pci_bridge_d3_update()	2016-11-17 18:44:56 -06:00
ecam.c	PCI: Add MCFG quirks for Qualcomm QDF2432 host controller	2016-12-06 13:45:49 -06:00
host-bridge.c	cxl: use pcibios_free_controller_deferred() when removing vPHBs	2016-08-22 11:09:33 +10:00
hotplug-pci.c	PCI: Remove unnecessary __ref annotations	2014-04-29 17:36:44 -06:00
htirq.c	x86/htirq: Use hierarchical irqdomain to manage Hypertransport interrupts	2015-04-24 15:36:50 +02:00
iov.c	PCI: Lock each enable/disable num_vfs operation in sysfs	2017-02-03 13:42:38 -06:00
irq.c	PCI: Fix whitespace, capitalization, and spelling errors	2013-11-14 11:28:18 -07:00
Kconfig	PCI: Move DesignWare IP support to new drivers/pci/dwc/ directory	2017-02-21 14:59:53 -06:00
Makefile	PCI: dwc: Remove dependency of designware on CONFIG_PCI	2017-02-21 15:00:26 -06:00
msi.c	PCI: add an API to get node from vector	2017-03-02 08:56:04 -07:00
of.c	PCI/MSI: Use of_msi_get_domain instead of open-coded "msi-parent" parsing	2015-10-16 13:07:14 +01:00
pci-acpi.c	Merge branch 'pci/pm' into next	2016-12-12 11:25:04 -06:00
pci-driver.c	pci-v4.11-changes	2017-02-23 11:53:22 -08:00
pci-label.c	PCI: Fix broken URL for Dell biosdevname	2016-02-29 12:03:19 -06:00
pci-mid.c	pci-v4.10-changes	2016-12-15 12:46:48 -08:00
pci-stub.c	PCI: Whitespace cleanup	2014-06-10 20:20:19 -06:00
pci-sysfs.c	PCI: Lock each enable/disable num_vfs operation in sysfs	2017-02-03 13:42:38 -06:00
pci.c	Revert "PCI: pciehp: Add runtime PM support for PCIe hotplug ports"	2017-02-03 08:53:51 -06:00
pci.h	PCI: Add device disconnected state	2017-03-29 22:54:46 -05:00
probe.c	pci-v4.11-changes	2017-02-23 11:53:22 -08:00
proc.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
quirks.c	scripts/spelling.txt: add "followings" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
remove.c	PCI: Autosense device removal in pci_bridge_d3_update()	2016-11-17 18:44:56 -06:00
rom.c	PCI: Add comments about ROM BAR updating	2016-11-29 18:05:09 -06:00
search.c	PCI: Add support for multiple DMA aliases	2016-04-11 14:34:32 -05:00
setup-bus.c	PCI: Remove res_to_dev_res() debug message	2016-12-29 11:27:52 -06:00
setup-irq.c	PCI: Export symbols required for loadable host driver modules	2015-04-08 14:17:10 -05:00
setup-res.c	Merge branch 'pci/host-rockchip' into next	2016-12-12 11:25:11 -06:00
slot.c	locking/atomic, kref: Add kref_read()	2017-01-14 11:37:18 +01:00
syscall.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
vc.c	PCI: Fix unaligned accesses in VC code	2016-06-20 13:24:20 -05:00
vpd.c
xen-pcifront.c	xen: make use of xenbus_read_unsigned() in xen-pcifront	2016-11-07 13:55:26 +01:00