drivers: net: fsl_enetc_mdio: return with time-out if HW is stuck

[oweals/u-boot.git] / drivers / net / fsl_enetc_mdio.c

diff --git a/drivers/net/fsl_enetc_mdio.c b/drivers/net/fsl_enetc_mdio.c
index 60d21537b807f0105ed97c99102b7faa26a470ff..47257a6cf686ebc7b2e946f29b3ee4600b9837ae 100644 (file)
--- a/drivers/net/fsl_enetc_mdio.c
+++ b/drivers/net/fsl_enetc_mdio.c
@@ -17,8 +17,13 @@
 
 static void enetc_mdio_wait_bsy(struct enetc_mdio_priv *priv)
 {
-       while (enetc_read(priv, ENETC_MDIO_CFG) & ENETC_EMDIO_CFG_BSY)
+       int to = 10000;
+
+       while ((enetc_read(priv, ENETC_MDIO_CFG) & ENETC_EMDIO_CFG_BSY) &&
+              --to)
                cpu_relax();
+       if (!to)
+               printf("T");
 }
 
 int enetc_mdio_read_priv(struct enetc_mdio_priv *priv, int addr, int devad,
@@ -144,6 +149,7 @@ U_BOOT_DRIVER(enetc_mdio) = {
 
 static struct pci_device_id enetc_mdio_ids[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, PCI_DEVICE_ID_ENETC_MDIO) },
+       { }
 };
 
 U_BOOT_PCI_DEVICE(enetc_mdio, enetc_mdio_ids);