From: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
[ Upstream commit ea938248557a52e231a31f338eac4baee36a8626 ]
Since commit adeef3e32146 ("net: constify netdev->dev_addr") the bmac
driver no longer builds with the following errors (pmac32_defconfig):
linux/drivers/net/ethernet/apple/bmac.c: In function ‘bmac_probe’:
linux/drivers/net/ethernet/apple/bmac.c:1287:20: error: assignment of read-only location ‘*(dev->dev_addr + (sizetype)j)’
1287 | dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j];
| ^
Fix it by making the modifications to a local macaddr variable and then
passing that to eth_hw_addr_set().
We don't use the existing addr variable because the bitrev8() would
mutate it, but it is already used unreversed later in the function.
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Reviewed-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/apple/bmac.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/apple/bmac.c b/drivers/net/ethernet/apple/bmac.c
index 1e4e402f07d76..19c7cd9beeef3 100644
--- a/drivers/net/ethernet/apple/bmac.c
+++ b/drivers/net/ethernet/apple/bmac.c
@@ -1240,6 +1240,7 @@ static int bmac_probe(struct macio_dev *mdev, const struct of_device_id *match)
struct bmac_data *bp;
const unsigned char *prop_addr;
unsigned char addr[6];
+ u8 macaddr[6];
struct net_device *dev;
int is_bmac_plus = ((int)match->data) != 0;
@@ -1287,7 +1288,9 @@ static int bmac_probe(struct macio_dev *mdev, const struct of_device_id *match)
rev = addr[0] == 0 && addr[1] == 0xA0;
for (j = 0; j < 6; ++j)
- dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j];
+ macaddr[j] = rev ? bitrev8(addr[j]): addr[j];
+
+ eth_hw_addr_set(dev, macaddr);
/* Enable chip without interrupts for now */
bmac_enable_and_reset_chip(dev);
--
2.34.1
