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9f98275671
linux/drivers/pci
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Bjorn Helgaas 9f98275671 PCI: Always check for non-CRS response before timeout 
While waiting for a device to become ready (i.e., to return a non-CRS
completion to a read of its Vendor ID), if we got a valid response to the
very last read before timing out, we printed a warning and gave up on the
device even though it was actually ready.

For a typical 60s timeout, we wait about 65s (it's not exact because of the
exponential backoff), but we treated devices that became ready between 33s
and 65s as though they failed.

Move the Device ID read later so we check whether the device is ready
before checking for a timeout.

Thanks to Sinan Kaya <okaya@codeaurora.org>, reorder reads so we always
check device presence after sleep, since it's pointless to sleep unless we
recheck afterwards.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-08-29 14:45:43 -05:00
..
dwc Merge branch 'pci/host-qcom' into next 2017-07-04 11:00:57 -05:00
endpoint PCI: endpoint: Select CRC32 to fix test build error 2017-06-12 15:46:13 -05:00
host PCI: rockchip: Check for pci_scan_root_bus_bridge() failure correctly 2017-07-12 12:50:11 -05:00
hotplug Annotation of module parameters that specify device settings 2017-05-10 19:13:03 -07:00
pcie Merge branch 'pm-pci' 2017-07-14 13:15:49 +02:00
switch Merge branch 'pci/switchtec' into next 2017-07-02 18:51:10 -05:00
access.c PCI: Provide Kconfig option for lockless config space accessors 2017-06-28 22:32:56 +02:00
ats.c PCI: Restore PRI and PASID state after Function-Level Reset 2017-05-30 15:40:50 -05:00
bus.c PCI: Autosense device removal in pci_bridge_d3_update() 2016-11-17 18:44:56 -06:00
ecam.c PCI: ECAM: Map config region with pci_remap_cfgspace() 2017-04-24 13:53:14 -05:00
host-bridge.c cxl: use pcibios_free_controller_deferred() when removing vPHBs 2016-08-22 11:09:33 +10:00
hotplug-pci.c
htirq.c
iov.c PCI: Protect pci_driver->sriov_configure() usage with device_lock() 2017-06-14 17:41:19 -05:00
irq.c pci-v4.12-changes 2017-05-08 19:03:25 -07:00
Kconfig PCI: Provide Kconfig option for lockless config space accessors 2017-06-28 22:32:56 +02:00
Makefile PCI: Build setup-irq.o on all arches 2017-07-02 16:14:27 -05:00
mmap.c PCI: Add I/O BAR support to generic pci_mmap_resource_range() 2017-04-20 08:47:47 -05:00
msi.c pci-v4.13-changes 2017-07-08 15:51:57 -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 PM / core: Drop run_wake flag from struct dev_pm_info 2017-06-28 01:52:52 +02:00
pci-driver.c Merge branch 'pm-pci' 2017-07-14 13:15:49 +02:00
pci-label.c pci-v4.13-changes 2017-07-08 15:51:57 -07:00
pci-mid.c PCI / PM: Simplify device wakeup settings code 2017-06-28 01:52:45 +02:00
pci-stub.c
pci-sysfs.c Merge branch 'pci/virtualization' into next 2017-07-03 08:00:29 -05:00
pci.c PCI: Avoid race while enabling upstream bridges 2017-08-18 21:50:48 -05:00
pci.h PCI: Mark Broadcom HT2100 Root Port Extended Tags as broken 2017-07-31 14:31:22 -05:00
probe.c PCI: Always check for non-CRS response before timeout 2017-08-29 14:45:43 -05:00
proc.c PCI: Add BAR index argument to pci_mmap_page_range() 2017-04-20 08:47:47 -05:00
quirks.c PCI: Mark Broadcom HT2100 Root Port Extended Tags as broken 2017-07-31 14:31:22 -05:00
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 device flag PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT 2017-04-13 18:49:50 -05:00
setup-bus.c PCI: Fix calculation of bridge window's size and alignment 2017-04-18 14:47:20 -05:00
setup-irq.c PCI: Add pci_assign_irq() function and have pci_fixup_irqs() use it 2017-07-02 16:14:28 -05:00
setup-res.c PCI: Make PCI_ROM_ADDRESS_MASK a 32-bit constant 2017-04-18 14:46:57 -05:00
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