Skip to content

FROMLIST: PCI: dwc: Remove MSI/MSIX capability if iMSI-RX is used as … #408

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
ziyuezhang-123 wants to merge 1 commit into
base: qcom-6.18.y
Choose a base branch
from
+10 −0
Open

FROMLIST: PCI: dwc: Remove MSI/MSIX capability if iMSI-RX is used as … #408

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 10 additions & 0 deletions drivers/pci/controller/dwc/pcie-designware-host.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1106,6 +1106,16 @@ int dw_pcie_setup_rc(struct dw_pcie_rp *pp)

dw_pcie_dbi_ro_wr_dis(pci);

/*
* If iMSI-RX module is used as the MSI controller, remove MSI and
* MSI-X capabilities from PCIe Root Ports to ensure fallback to INTx
* interrupt handling.
*/
if (pp->has_msi_ctrl) {
dw_pcie_remove_capability(pci, PCI_CAP_ID_MSI);
dw_pcie_remove_capability(pci, PCI_CAP_ID_MSIX);
}

return 0;
}
EXPORT_SYMBOL_GPL(dw_pcie_setup_rc);
Expand Down