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Code Issues Releases Packages Activity
linux/drivers/pci
History
Niklas Cassel 7259d9d6f0 PCI: dwc: Ensure that dw_pcie_wait_for_link() waits 100 ms after link up 
commit 80dc18a0cb upstream.

As per PCIe r6.0, sec 6.6.1, a Downstream Port that supports Link speeds
greater than 5.0 GT/s, software must wait a minimum of 100 ms after Link
training completes before sending a Configuration Request.

Add this delay in dw_pcie_wait_for_link(), after the link is reported as
up. The delay will only be performed in the success case where the link
came up.

DWC glue drivers that have a link up IRQ (drivers that set
use_linkup_irq = true) do not call dw_pcie_wait_for_link(), instead they
perform this delay in their threaded link up IRQ handler.

Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Link: https://patch.msgid.link/20250625102347.1205584-14-cassel@kernel.org
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-09-04 15:31:56 +02:00
..
controller PCI: dwc: Ensure that dw_pcie_wait_for_link() waits 100 ms after link up 2025-09-04 15:31:56 +02:00
endpoint PCI: endpoint: Fix configfs group removal on driver teardown 2025-08-28 16:30:59 +02:00
hotplug PCI: pnv_php: Fix surprise plug detection and recovery 2025-08-15 12:14:04 +02:00
msi PCI/MSI: Add an option to write MSIX ENTRY_DATA before any reads 2025-05-02 07:58:56 +02:00
pcie PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge 2025-08-28 16:30:59 +02:00
pwrctl PCI/pwrctl: Abandon QCom WCN probe on pre-pwrseq device-trees 2024-10-23 13:34:41 -05:00
switch PCI: switchtec: Add Microchip PCI100X device IDs 2025-02-21 14:01:24 +01:00
access.c PCI: Revert the cfg_access_lock lockdep mechanism 2024-06-04 12:10:05 -05:00
ats.c iommufd: Extend IOMMU_GET_HW_INFO to report PASID capability 2025-05-29 11:02:04 +02:00
bus.c pci-v6.11-changes 2024-07-19 19:03:18 -07:00
devres.c PCI: Fix wrong length of devres array 2025-04-20 10:15:58 +02:00
doe.c PCI/DOE: Support discovery version 2 2024-04-09 09:33:15 -05:00
ecam.c PCI: Dynamically map ECAM regions 2021-06-16 17:20:40 -05:00
host-bridge.c PCI: VMD: ACPI: Make ACPI companion lookup work for VMD bus 2021-09-02 17:59:58 +02:00
iomap.c PCI: Check BAR index for validity 2025-04-20 10:15:26 +02:00
iov.c PCI: Use resource names in PCI log messages 2023-12-15 17:28:42 -06:00
irq.c PCI: Place interrupt related code into irq.c 2024-01-29 17:01:31 -06:00
Kconfig x86/kaslr: Reduce KASLR entropy on most x86 systems 2025-05-29 11:02:40 +02:00
Makefile PCI/NPEM: Add Native PCIe Enclosure Management support 2024-09-04 17:25:12 -05:00
mmap.c PCI/sysfs: Compile pci-sysfs.c only if CONFIG_SYSFS=y 2024-03-05 16:08:43 -06:00
npem.c PCI/NPEM: Add _DSM PCIe SSD status LED management 2024-09-06 11:37:24 -05:00
of.c pci-v6.11-changes 2024-07-19 19:03:18 -07:00
of_property.c PCI: of_property: Assign PCI instead of CPU bus address to dynamic PCI nodes 2024-12-09 10:41:09 +01:00
p2pdma.c PCI/P2PDMA: Fix a sleeping issue in a RCU read section 2024-02-08 15:31:43 -06:00
pci-acpi.c PCI/ACPI: Fix runtime PM ref imbalance on Hot-Plug Capable ports 2025-08-20 18:30:57 +02:00
pci-bridge-emul.c PCI: Rename CRS Completion Status to RRS 2024-09-10 19:52:30 -05:00
pci-bridge-emul.h PCI: pci-bridge-emul: Set position of PCI capabilities to real HW value 2022-08-25 12:07:56 +02:00
pci-driver.c PCI: Make pci_bus_type constant 2024-08-23 12:46:22 -05:00
pci-label.c PCI/sysfs: Use sysfs_emit() and sysfs_emit_at() in "show" functions 2021-06-03 22:14:47 -05:00
pci-mid.c PCI/PM: Switch to new Intel CPU model defines 2024-06-11 17:08:14 -05:00
pci-pf-stub.c PCI: Add missing MODULE_DESCRIPTION() macros 2024-07-08 08:35:35 +00:00
pci-stub.c PCI: Add missing MODULE_DESCRIPTION() macros 2024-07-08 08:35:35 +00:00
pci-sysfs.c PCI: Fix BAR resizing when VF BARs are assigned 2025-04-10 14:39:16 +02:00
pci.c PCI: Honor Max Link Speed when determining supported speeds 2025-08-20 18:30:58 +02:00
pci.h PCI: Rename PCIE_RESET_CONFIG_DEVICE_WAIT_MS to PCIE_RESET_CONFIG_WAIT_MS 2025-09-04 15:31:55 +02:00
probe.c PCI/ACPI: Fix runtime PM ref imbalance on Hot-Plug Capable ports 2025-08-20 18:30:57 +02:00
proc.c PCI: Remove pci_mmap_page_range() wrapper 2022-07-29 12:08:44 -05:00
quirks.c PCI: Add ACS quirk for Loongson PCIe 2025-06-27 11:11:25 +01:00
remove.c pci-v6.12-changes 2024-09-23 12:47:06 -07:00
rom.c PCI: Prefer 'unsigned int' over bare 'unsigned' 2021-10-27 13:41:22 -05:00
search.c PCI: Add pci_get_base_class() helper 2023-09-28 16:49:44 -05:00
setup-bus.c PCI: Fix old_size lower bound in calculate_iosize() too 2025-05-29 11:02:46 +02:00
setup-res.c PCI: Use resource names in PCI log messages 2023-12-15 17:28:42 -06:00
slot.c PCI: Fix use-after-free of slot->bus on hot remove 2024-12-05 14:02:45 +01:00
syscall.c PCI: Use consistent put_user() pointer types 2023-08-25 08:15:13 -05:00
vc.c PCI/VC: Use FIELD_GET() 2023-10-24 16:55:45 -05:00
vgaarb.c pci-v6.7-changes 2023-11-02 14:05:18 -10:00
vpd.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
xen-pcifront.c x86: always initialize xen-swiotlb when xen-pcifront is enabling 2023-07-31 17:54:27 +02:00