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Some Ventana boards have a Marvell sky2 GigE controller as eth1 however assigning the mac address through device-tree is difficult because the PCI slot can move around depending on board configuration and slot population. To work around this we add a patch to the sky2 driver to allow accessing its mac address via a device-tree alias. Signed-off-by: Tim Harvey <tharvey@gateworks.com> Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com> SVN-Revision: 48013
31 lines
928 B
Diff
31 lines
928 B
Diff
Index: linux-4.3/drivers/net/ethernet/marvell/sky2.c
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===================================================================
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--- linux-4.3.orig/drivers/net/ethernet/marvell/sky2.c 2015-11-01 16:05:25.000000000 -0800
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+++ linux-4.3/drivers/net/ethernet/marvell/sky2.c 2015-12-18 10:39:44.983158318 -0800
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@@ -4812,7 +4812,24 @@
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* 1) from device tree data
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* 2) from internal registers set by bootloader
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*/
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- iap = of_get_mac_address(hw->pdev->dev.of_node);
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+
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+ iap = NULL;
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+ if (IS_ENABLED(CONFIG_OF)) {
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+ struct device_node *np;
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+ np = of_find_node_by_path("/aliases");
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+ if (np) {
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+ const char *path = of_get_property(np, "sky2", NULL);
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+ if (path)
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+ np = of_find_node_by_path(path);
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+ if (np)
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+ path = of_get_mac_address(np);
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+ if (path)
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+ iap = (unsigned char *) path;
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+ }
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+ }
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+
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+ if (!iap)
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+ iap = of_get_mac_address(hw->pdev->dev.of_node);
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if (iap)
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memcpy(dev->dev_addr, iap, ETH_ALEN);
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else
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