lkml.org 
[lkml]   [2020]   [Mar]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH AUTOSEL 5.5 36/66] net: ethernet: dm9000: Handle -EPROBE_DEFER in dm9000_parse_dt()
Date
From: Paul Cercueil <paul@crapouillou.net>

[ Upstream commit 9a6a0dea16177ccaecc116f560232e63bec115f1 ]

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>
---
drivers/net/ethernet/davicom/dm9000.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
index cce90b5925d93..70060c51854fd 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c
@@ -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;
}
--
2.20.1
\
 
 \ /
  Last update: 2020-03-03 04:02    [W:0.298 / U:3.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site