Bjorn Helgaas 94ac327e04 PCI/ASPM: Account for downstream device's Port Common_Mode_Restore_Time ... Every Port that supports the L1.2 substate advertises its Port Common_Mode_Restore_Time, i.e., the time the Port requires to re-establish common mode when exiting L1.2 (see PCIe r3.1, sec 7.33.2). Per sec 5.5.3.3.1, when exiting L1.2, the Downstream Port (the device at the upstream end of the link) must send TS1 training sequences for at least T(COMMONMODE) after it detects electrical idle exit on the Link. We want this to be long enough for both ends of the Link, so we should set it to the maximum of the Port Common_Mode_Restore_Time for the upstream and downstream components on the Link. Previously we only looked at the Port Common_Mode_Restore_Time of the upstream device, so if the downstream device required more time, we didn't program the upstream device's T(COMMONMODE) correctly. Fixes: f1f0366dd6 ("PCI/ASPM: Calculate and save the L1.2 timing parameters") Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Vidya Sagar <vidyas@nvidia.com> Acked-by: Rajat Jain <rajatja@google.com> CC: stable@vger.kernel.org # v4.11+		2017-11-13 15:05:24 -06:00
..
dwc	Merge branch 'pci/trivial' into next	2017-09-07 13:24:20 -05:00
endpoint	PCI: endpoint: Use correct "end of test" interrupt	2017-09-20 13:56:06 -05:00
host	pci-v4.14-changes	2017-09-08 15:47:43 -07:00
hotplug	Merge branch 'pci/misc' into next	2017-09-07 13:24:16 -05:00
pcie	PCI/ASPM: Account for downstream device's Port Common_Mode_Restore_Time	2017-11-13 15:05:24 -06:00
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
ecam.c
host-bridge.c
hotplug-pci.c
htirq.c
iov.c	PCI: Disable VF decoding before pcibios_sriov_disable() updates resources	2017-08-29 17:24:02 -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
msi.c	pci-v4.14-changes	2017-09-08 15:47:43 -07:00
of.c
pci-acpi.c	ACPI / PCI / PM: Rework acpi_pci_propagate_wakeup()	2017-08-01 14:05:03 +02:00
pci-driver.c	ACPI updates for v4.14-rc1	2017-09-05 12:45:03 -07:00
pci-label.c	PCI: Constify label attribute_group structures	2017-08-10 15:21:41 -05:00
pci-mid.c	PCI / PM: Simplify device wakeup settings code	2017-06-28 01:52:45 +02:00
pci-stub.c
pci-sysfs.c	PCI: Fix race condition with driver_override	2017-09-25 18:34:54 -05:00
pci.c	Revert "PCI: Avoid race while enabling upstream bridges"	2017-09-15 01:33:51 -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-v4.14-changes	2017-09-08 15:47:43 -07:00
proc.c
quirks.c	dmi: Mark all struct dmi_system_id instances const	2017-09-14 11:59:30 +02:00
remove.c
rom.c
search.c
setup-bus.c
setup-irq.c	PCI: Inline and remove pcibios_update_irq()	2017-08-10 12:49:57 -05:00
setup-res.c	PCI: Add a generic weak pcibios_align_resource()	2017-08-02 14:53:16 -05:00
slot.c
syscall.c
vc.c
vpd.c
xen-pcifront.c