From: Hugh Blemings <[EMAIL PROTECTED]>
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]>
---
drivers/net/ibm_newemac/core.c | 4 ++++
1 file changed, 4 insertions(+)
Index: linux-work/drivers/net/ibm_newemac/core.c
===================================================================
--- linux-work.orig/drivers/net/ibm_newemac/core.c 2007-11-20
14:47:02.000000000 +1100
+++ linux-work/drivers/net/ibm_newemac/core.c 2007-11-20 14:47:05.000000000
+1100
@@ -2550,6 +2550,10 @@ static int __devinit emac_probe(struct o
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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