diff options
| author | Théo Lebrun <theo.lebrun@bootlin.com> | 2025-09-23 18:00:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-03 12:45:14 +0100 |
| commit | 0c5e86a1846168d11e1de207cc03e1b7911dd015 (patch) | |
| tree | 23a46f7adbdfb0b34c8ea54c9a35c719e847e3ae | |
| parent | 6025f641a0e30afdc5aa62017397b1860ad9f677 (diff) | |
net: macb: avoid dealing with endianness in macb_set_hwaddr()
[ Upstream commit 70a5ce8bc94545ba0fb47b2498bfb12de2132f4d ]
bp->dev->dev_addr is of type `unsigned char *`. Casting it to a u32
pointer and dereferencing implies dealing manually with endianness,
which is error-prone.
Replace by calls to get_unaligned_le32|le16() helpers.
This was found using sparse:
⟩ make C=2 drivers/net/ethernet/cadence/macb_main.o
warning: incorrect type in assignment (different base types)
expected unsigned int [usertype] bottom
got restricted __le32 [usertype]
warning: incorrect type in assignment (different base types)
expected unsigned short [usertype] top
got restricted __le16 [usertype]
...
Reviewed-by: Sean Anderson <sean.anderson@linux.dev>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250923-macb-fixes-v6-5-772d655cdeb6@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/cadence/macb_main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index a635c9af26c3..873b0acecd1b 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -277,9 +277,9 @@ static void macb_set_hwaddr(struct macb *bp) u32 bottom; u16 top; - bottom = cpu_to_le32(*((u32 *)bp->dev->dev_addr)); + bottom = get_unaligned_le32(bp->dev->dev_addr); macb_or_gem_writel(bp, SA1B, bottom); - top = cpu_to_le16(*((u16 *)(bp->dev->dev_addr + 4))); + top = get_unaligned_le16(bp->dev->dev_addr + 4); macb_or_gem_writel(bp, SA1T, top); /* Clear unused address register sets */ |