Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3d7225...
Commit: 3d722562d734834282bccd97e0badd213ec311e9
Parent: bff713b562d495658093f1716a80c6ad76920e8b
Author: Hugh Blemings <hugh@blemings.org>
AuthorDate: Wed Dec 5 11:14:30 2007 +1100
Committer: Jeff Garzik <jeff@garzik.org>
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 <hugh@blemings.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
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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