Commit 2e6ea706 authored by Richard Zhu's avatar Richard Zhu Committed by Bjorn Helgaas
Browse files

PCI: imx6: Delay link start until configfs 'start' written 



According to Documentation/PCI/endpoint/pci-endpoint-cfs.rst, the Endpoint
controller (EPC) should only start the link when userspace writes '1' to
the '/sys/kernel/config/pci_ep/controllers/<EPC>/start' attribute, which
ultimately results in calling imx_pcie_start_link() via
pci_epc_start_store().

To align with the documented behavior, do not start the link automatically
when adding the EP controller.

Fixes: 75c2f26d ("PCI: imx6: Add i.MX PCIe EP mode support")
Signed-off-by: default avatarRichard Zhu <hongxing.zhu@nxp.com>
[mani: reworded commit subject and description]
Signed-off-by: default avatarManivannan Sadhasivam <mani@kernel.org>
[bhelgaas: commit log]
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarFrank Li <Frank.Li@nxp.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20250709033722.2924372-3-hongxing.zhu@nxp.com
parent d31eb217

drivers/pci/controller/dwc/pci-imx6.c

+0 −3
Original line number Diff line number Diff line
@@ -1474,9 +1474,6 @@ static int imx_add_pcie_ep(struct imx_pcie *imx_pcie, 


	pci_epc_init_notify(ep->epc);



	/* Start LTSSM. */

	imx_pcie_ltssm_enable(dev);



	return 0;

}