Commit:     3d722562d734834282bccd97e0badd213ec311e9
Parent:     bff713b562d495658093f1716a80c6ad76920e8b
Author:     Hugh Blemings <[EMAIL PROTECTED]>
AuthorDate: Wed Dec 5 11:14:30 2007 +1100
Committer:  Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Fri Dec 7 15:09:06 2007 -0500

    ibm_newemac: Skip EMACs that are marked unused by the firmware
    Depending on how the 44x processors are wired, some EMAC cells
    might not be useable (and not connected to a PHY). However, some
    device-trees may choose to still expose them (since their registers
    are present in the MMIO space) but with an "unused" property in them.
    Signed-off-by: Hugh Blemings <[EMAIL PROTECTED]>
    Signed-off-by: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
    Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
 drivers/net/ibm_newemac/core.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index ac9fd46..a77207f 100644
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -2550,6 +2550,10 @@ static int __devinit emac_probe(struct of_device *ofdev,
        struct device_node **blist = NULL;
        int err, i;
+       /* Skip unused/unwired EMACS */
+       if (of_get_property(np, "unused", NULL))
+               return -ENODEV;
        /* Find ourselves in the bootlist if we are there */
        for (i = 0; i < EMAC_BOOT_LIST_SIZE; i++)
                if (emac_boot_list[i] == np)
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