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Return NULL if we got unexpected value from skb_trim_rcsum() in
sja1110_rcv_inband_control_extension()
Fixes: 4913b8ebf8 ("net: dsa: add support for the SJA1110 native tagging protocol")
Signed-off-by: Artem Chernyshev <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>