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net: ethernet: dm9000: Handle -EPROBE_DEFER in dm9000_parse_dt() 

[ Upstream commit 9a6a0dea16 ]

The call to of_get_mac_address() can return -EPROBE_DEFER, for instance
when the MAC address is read from a NVMEM driver that did not probe yet.

Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Paul Cercueil 2020-02-16 16:39:43 -03:00 committed by Greg Kroah-Hartman
parent 05e26a842a
commit 1b1939fedc
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/davicom/dm9000.c
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@ -1405,6 +1405,8 @@ static struct dm9000_plat_data *dm9000_parse_dt(struct device *dev)
mac_addr = of_get_mac_address(np);
if (!IS_ERR(mac_addr))
ether_addr_copy(pdata->dev_addr, mac_addr);
else if (PTR_ERR(mac_addr) == -EPROBE_DEFER)
return ERR_CAST(mac_addr);
return pdata;
}