Commit c622032e authored Jun 21, 2016 by Ley Foon Tan Committed by Bjorn Helgaas Jul 22, 2016

PCI: altera: Check link status before retrain link



Check the link status before retraining.  If the link is not up, don't
bother trying to retrain it.

[bhelgaas: split code move to separate patch, changelog]
Signed-off-by: Ley Foon Tan <lftan@altera.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

parent f8be11ae

drivers/pci/host/pcie-altera.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -100,6 +100,10 @@ static bool altera_pcie_link_is_up(struct altera_pcie *pcie)
		static void altera_pcie_retrain(struct pci_dev *dev)
		{
		u16 linkcap, linkstat;
		struct altera_pcie *pcie = dev->bus->sysdata;

		if (!altera_pcie_link_is_up(pcie))
		return;

		/*
		* Set the retrain bit if the PCIe rootport support > 2.5GB/s, but