Dong Yibo d9d6d67f4c net: rnpgbe: fix mailbox endianness and remove pointer casts ... The rnpgbe mailbox exchanges data through 32-bit MMIO registers in little-endian wire format. The original code had two problems: 1. FW structs (with __le16/__le32 fields) were cast to (u32 *) before reaching the mailbox transport, hiding the endian annotations from sparse. 2. No cpu_to_le32()/le32_to_cpu() conversion was done between CPU-endian MMIO values and the little-endian payload, causing data corruption on big-endian systems. Fix by adding the missing byte-order conversions in the transport layer and introducing union wrappers (mbx_fw_cmd_req_u, mbx_fw_cmd_reply_u) that overlay each FW struct with a __le32 dwords[] array. Callers fill named fields using cpu_to_le16/32(), then pass dwords[] to the transport, which now takes explicit __le32 * instead of u32 *. This eliminates all pointer casts on the mailbox data path and lets sparse verify the conversions. Fixes: 4543534c3e ("net: rnpgbe: Add basic mbx ops support") Signed-off-by: Dong Yibo <dong100@mucse.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20260701032208.1843156-2-dong100@mucse.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>		2026-07-07 10:45:42 +02:00
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rnpgbe	net: rnpgbe: fix mailbox endianness and remove pointer casts	2026-07-07 10:45:42 +02:00
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