Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 3d722562 authored by Hugh Blemings's avatar Hugh Blemings Committed by Jeff Garzik
Browse files

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: default avatarHugh Blemings <hugh@blemings.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent bff713b5

drivers/net/ibm_newemac/core.c

+4 −0
Original line number Diff line number Diff line
@@ -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)