From: Michael Ellerman Date: Fri, 14 Jan 2022 03:13:16 +0000 (+1100) Subject: net: apple: bmac: Fix build since dev_addr constification X-Git-Tag: v5.17-rc1~37^2~24 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea938248557a52e231a31f338eac4baee36a8626;p=thirdparty%2Flinux.git net: apple: bmac: Fix build since dev_addr constification 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 Reviewed-by: Jakub Kicinski Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/apple/bmac.c b/drivers/net/ethernet/apple/bmac.c index 9a650d1c1bdd1..4d2ba30c2fbd8 100644 --- a/drivers/net/ethernet/apple/bmac.c +++ b/drivers/net/ethernet/apple/bmac.c @@ -1237,6 +1237,7 @@ 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; @@ -1284,7 +1285,9 @@ 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);