From: Michael Ellerman mpe@ellerman.id.au

[ Upstream commit 6c8dc12cd925e5fa8c152633338b2b35c4c89258 ]

Since commit adeef3e32146 ("net: constify netdev->dev_addr") the mace driver no longer builds with various errors (pmac32_defconfig):

linux/drivers/net/ethernet/apple/mace.c: In function ‘mace_probe’: linux/drivers/net/ethernet/apple/mace.c:170:20: error: assignment of read-only location ‘*(dev->dev_addr + (sizetype)j)’ 170 | dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j]; | ^ linux/drivers/net/ethernet/apple/mace.c: In function ‘mace_reset’: linux/drivers/net/ethernet/apple/mace.c:349:32: warning: passing argument 2 of ‘__mace_set_address’ discards ‘const’ qualifier from pointer target type 349 | __mace_set_address(dev, dev->dev_addr); | ~~~^~~~~~~~~~ linux/drivers/net/ethernet/apple/mace.c:93:62: note: expected ‘void *’ but argument is of type ‘const unsigned char *’ 93 | static void __mace_set_address(struct net_device *dev, void *addr); | ~~~~~~^~~~ linux/drivers/net/ethernet/apple/mace.c: In function ‘__mace_set_address’: linux/drivers/net/ethernet/apple/mace.c:388:36: error: assignment of read-only location ‘*(dev->dev_addr + (sizetype)i)’ 388 | out_8(&mb->padr, dev->dev_addr[i] = p[i]); | ^

Fix it by making the modifications to a local macaddr variable and then passing that to eth_hw_addr_set(), as well as adding some missing const qualifiers.

Signed-off-by: Michael Ellerman mpe@ellerman.id.au Reviewed-by: Jakub Kicinski kuba@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/apple/mace.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/apple/mace.c b/drivers/net/ethernet/apple/mace.c index e58b157b7d7c4..5f1a8673aa605 100644 --- a/drivers/net/ethernet/apple/mace.c +++ b/drivers/net/ethernet/apple/mace.c @@ -89,7 +89,7 @@ static void mace_set_timeout(struct net_device *dev); static void mace_tx_timeout(unsigned long data); static inline void dbdma_reset(volatile struct dbdma_regs __iomem *dma); static inline void mace_clean_rings(struct mace_data *mp); -static void __mace_set_address(struct net_device *dev, void *addr); +static void __mace_set_address(struct net_device *dev, const void *addr);

/* * If we can't get a skbuff when we need it, we use this area for DMA. @@ -111,6 +111,7 @@ static int mace_probe(struct macio_dev *mdev, const struct of_device_id *match) struct net_device *dev; struct mace_data *mp; const unsigned char *addr; + u8 macaddr[ETH_ALEN]; int j, rev, rc = -EBUSY;

if (macio_resource_count(mdev) != 3 || macio_irq_count(mdev) != 3) { @@ -166,8 +167,9 @@ static int mace_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); mp->chipid = (in_8(&mp->mace->chipid_hi) << 8) | in_8(&mp->mace->chipid_lo);

@@ -368,11 +370,12 @@ static void mace_reset(struct net_device *dev) out_8(&mb->plscc, PORTSEL_GPSI + ENPLSIO); }

-static void __mace_set_address(struct net_device *dev, void *addr) +static void __mace_set_address(struct net_device *dev, const void *addr) { struct mace_data *mp = netdev_priv(dev); volatile struct mace __iomem *mb = mp->mace; - unsigned char *p = addr; + const unsigned char *p = addr; + u8 macaddr[ETH_ALEN]; int i;

/* load up the hardware address */ @@ -384,7 +387,10 @@ static void __mace_set_address(struct net_device *dev, void *addr) ; } for (i = 0; i < 6; ++i) - out_8(&mb->padr, dev->dev_addr[i] = p[i]); + out_8(&mb->padr, macaddr[i] = p[i]); + + eth_hw_addr_set(dev, macaddr); + if (mp->chipid != BROKEN_ADDRCHG_REV) out_8(&mb->iac, 0); }