PCI Bridge is always accessible also when link is down. So move detection of link up from mvebu_pcie_of_to_plat() function to mvebu_pcie_valid_addr() function which is used when accessing PCI config space.
Signed-off-by: Pali Rohár pali@kernel.org Reviewed-by: Marek Behún marek.behun@nic.cz --- drivers/pci/pci_mvebu.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/drivers/pci/pci_mvebu.c b/drivers/pci/pci_mvebu.c index 4b8e56f22dfa..40b8a57bbe1e 100644 --- a/drivers/pci/pci_mvebu.c +++ b/drivers/pci/pci_mvebu.c @@ -138,6 +138,10 @@ static bool mvebu_pcie_valid_addr(struct mvebu_pcie *pcie, if (busno == pcie->first_busno && (dev != 0 || func != 0)) return false;
+ /* Access to other buses is possible when link is up */ + if (busno != pcie->first_busno && !mvebu_pcie_link_up(pcie)) + return false; + /* On secondary bus can be only one PCIe device */ if (busno == pcie->sec_busno && dev != 0) return false; @@ -369,9 +373,6 @@ static int mvebu_pcie_probe(struct udevice *dev) struct pci_controller *hose = dev_get_uclass_priv(ctlr); u32 reg;
- debug("%s: PCIe %d.%d - up, base %08x\n", __func__, - pcie->port, pcie->lane, (u32)pcie->base); - /* * Change Class Code of PCI Bridge device to PCI Bridge (0x600400) * because default value is Memory controller (0x508000) which @@ -603,13 +604,6 @@ static int mvebu_pcie_of_to_plat(struct udevice *dev) if (ret < 0) goto err;
- /* Check link and skip ports that have no link */ - if (!mvebu_pcie_link_up(pcie)) { - debug("%s: %s - down\n", __func__, pcie->name); - ret = -ENODEV; - goto err; - } - return 0;
err: