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[v2,0/4] PCI: dwc: Link Up IRQ fixes

Message ID 20250506073934.433176-6-cassel@kernel.org
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Series PCI: dwc: Link Up IRQ fixes | expand

Message

Niklas Cassel May 6, 2025, 7:39 a.m. UTC 
Hello there,

Commit 8d3bf19f1b58 ("PCI: dwc: Don't wait for link up if driver can detect
Link Up event") added support for DWC to not wait for link up before
enumerating the bus. However, we cannot simply enumerate the bus after
receiving a Link Up IRQ, we still need to wait PCIE_T_RRS_READY_MS time
to allow a device to become ready after deasserting PERST. To avoid
bringing back an conditional delay during probe, perform the wait in the
threaded IRQ handler instead.

Please review.


Kind regards,
Niklas


Changes since v1:
-Added missing include pci.h that was lost during rebase.


Niklas Cassel (4):
  PCI: dw-rockchip: Do not enumerate bus before endpoint devices are
    ready
  PCI: qcom: Do not enumerate bus before endpoint devices are ready
  PCI: dw-rockchip: Replace PERST sleep time with proper macro
  PCI: qcom: Replace PERST sleep time with proper macro

 drivers/pci/controller/dwc/pcie-dw-rockchip.c | 4 +++-
 drivers/pci/controller/dwc/pcie-qcom.c        | 3 ++-
 2 files changed, 5 insertions(+), 2 deletions(-)