diff options
| author | Maciej W. Rozycki <macro@orcam.me.uk> | 2023-06-11 18:19:53 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2023-06-20 10:58:53 -0500 |
| commit | 680e9c47a2293bcc6a67a6f13f3b23d4c456885b (patch) | |
| tree | 8b1d935d9aa4958b68acfccee32fa6aaaf1d8075 /drivers/pci/pci.h | |
| parent | 37edd87eb621a96d33ee4eefe4b54cfc5a7e03df (diff) | |
PCI: Add support for polling DLLLA to pcie_retrain_link()
Let the caller of pcie_retrain_link() specify whether they want to use the
LT bit or the DLLLA bit of the Link Status Register to determine if link
training has completed. It is up to the caller to verify whether the use
of the DLLLA bit, the implementation of which is optional, is valid for the
device requested.
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2306110310540.64925@angie.orcam.me.uk
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 0d9671b20d17..6c257acbae90 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -565,7 +565,7 @@ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev, pci_ers_result_t (*reset_subordinates)(struct pci_dev *pdev)); bool pcie_wait_for_link(struct pci_dev *pdev, bool active); -bool pcie_retrain_link(struct pci_dev *pdev); +bool pcie_retrain_link(struct pci_dev *pdev, bool use_lt); #ifdef CONFIG_PCIEASPM void pcie_aspm_init_link_state(struct pci_dev *pdev); void pcie_aspm_exit_link_state(struct pci_dev *pdev); |