5.4-stable review patch. If anyone has any objections, please let me know.
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From: Théo Lebrun theo.lebrun@bootlin.com
[ 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 --- drivers/net/ethernet/cadence/macb_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index a635c9af26c3e..873b0acecd1bf 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 */