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authorThéo Lebrun <theo.lebrun@bootlin.com>2025-09-23 18:00:27 +0200
committerJakub Kicinski <kuba@kernel.org>2025-09-26 17:54:51 -0700
commit70a5ce8bc94545ba0fb47b2498bfb12de2132f4d (patch)
treeb6ee4df712203aa4a5c3fe653a58ef71e30b578c /drivers/net/ethernet/cadence/macb_main.c
parent78d901897b3cae06b38f54e48a2378cf9da21175 (diff)
net: macb: avoid dealing with endianness in macb_set_hwaddr()
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>
Diffstat (limited to 'drivers/net/ethernet/cadence/macb_main.c')
-rw-r--r--drivers/net/ethernet/cadence/macb_main.c4
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 fc082a7a5a31..4af2ec705ba5 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -274,9 +274,9 @@ 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);
if (gem_has_ptp(bp)) {