[PATCH 0/4] PCI: dwc: Do not enumerate bus before endpoint devices are ready

Niklas Cassel cassel at kernel.org
Wed Jun 11 03:51:41 PDT 2025


Hello all,

The DWC PCIe controller driver currently does not follow the PCIe
specification with regards to the delays after link training, before
sending out configuration requests. This series fixes this.

At the same time, PATCH 1/4 addresses a regression where a Plextor
NVMe drive fails to be configured correctly. With this series, the
Plextor NVMe drive works once again.


Kind regards,
Niklas


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: dwc: Ensure that dw_pcie_wait_for_link() waits 100 ms after link
    up
  PCI: dwc: Reduce LINK_WAIT_SLEEP_MS

 drivers/pci/controller/dwc/pcie-designware.c  | 13 ++++++++++++-
 drivers/pci/controller/dwc/pcie-designware.h  | 11 ++++++++---
 drivers/pci/controller/dwc/pcie-dw-rockchip.c |  7 +++++++
 drivers/pci/controller/dwc/pcie-qcom.c        |  7 +++++++
 4 files changed, 34 insertions(+), 4 deletions(-)

-- 
2.49.0




More information about the linux-arm-kernel mailing list