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| author | Hugh Blemings <hugh@blemings.org> | 2007-12-05 01:14:30 +0100 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-12-07 21:09:06 +0100 |
| commit | 3d722562d734834282bccd97e0badd213ec311e9 (patch) | |
| tree | c3c5c34a002198239160d701e594c3df96cbcd02 | |
| parent | ibm_newemac: Cleanup/fix support for STACR register variants (diff) | |
| download | linux-3d722562d734834282bccd97e0badd213ec311e9.tar.xz linux-3d722562d734834282bccd97e0badd213ec311e9.zip | |
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 <hugh@blemings.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | 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 ac9fd46509c1..a77207f19671 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) |