Commit 126d0439 authored by Hans Zhang's avatar Hans Zhang Committed by Manivannan Sadhasivam
Browse files

PCI: j721e: Validate max-link-speed from DT 



Use the new pcie_get_link_speed() helper to validate the value read from
the "max-link-speed" DT property.  If the value is missing or invalid,
fall back to Gen2 (speed = 2).  This prepares for the removal of the
range check in of_pci_get_max_link_speed().

Signed-off-by: default avatarHans Zhang <18255117159@163.com>
Signed-off-by: default avatarManivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260313165522.123518-4-18255117159@163.com
parent 0f34f647

drivers/pci/controller/cadence/pci-j721e.c

+2 −1
Original line number Diff line number Diff line
@@ -202,7 +202,8 @@ static int j721e_pcie_set_link_speed(struct j721e_pcie *pcie, 
	int ret;



	link_speed = of_pci_get_max_link_speed(np);

	if (link_speed < 2)

	if ((link_speed < 2) ||

	    (pcie_get_link_speed(link_speed) == PCI_SPEED_UNKNOWN))

		link_speed = 2;



	val = link_speed - 1;