arm: a37xx: pci: Register controller also when no PCIe card is connected

Allow access to config space of PCIe Root Port (which is always present on
the root bus) even when PCIe link is down or no card is connected.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c
index ccaeecaca8e3c03ab4a8df469372727eb9b652a5..c795ef10b884ad4d022e00809b737e4d4018a54c 100644 (file)
--- a/drivers/pci/pci-aardvark.c
+++ b/drivers/pci/pci-aardvark.c
@@ -645,11 +645,8 @@ retry:
  * @pcie: The PCI device to access
  *
  * Wait up to 1 second for link training to be accomplished.
- *
- * Return 1 (true) if link training ends up with link up success.
- * Return 0 (false) if link training ends up with link up failure.
  */
-static int pcie_advk_wait_for_link(struct pcie_advk *pcie)
+static void pcie_advk_wait_for_link(struct pcie_advk *pcie)
 {
        int retries;
 
@@ -657,15 +654,13 @@ static int pcie_advk_wait_for_link(struct pcie_advk *pcie)
        for (retries = 0; retries < LINK_MAX_RETRIES; retries++) {
                if (pcie_advk_link_up(pcie)) {
                        printf("PCIe: Link up\n");
-                       return 0;
+                       return;
                }
 
                udelay(LINK_WAIT_TIMEOUT);
        }
 
        printf("PCIe: Link down\n");
-
-       return -ETIMEDOUT;
 }
 
 /*
@@ -898,8 +893,7 @@ static int pcie_advk_setup_hw(struct pcie_advk *pcie)
                return -EINVAL;
 
        /* Wait for PCIe link up */
-       if (pcie_advk_wait_for_link(pcie))
-               return -ENXIO;
+       pcie_advk_wait_for_link(pcie);
 
        return 0;
 }