ipv6: Annotate ipv6_addr_is_* bitwise pointer casts
The sparse commit 6002ded74587 ("add a flag to warn on casts to/from bitwise pointers") introduced a check for non-direct casts from/to restricted datatypes (when -Wbitwise-pointer is enabled). This triggered a warning in the 64 bit optimized ipv6_addr_is_*() functions because sparse doesn't know that the buffer already points to some data in the correct bitwise integer format. But these were correct and can therefore be marked with __force to signalize sparse an intended cast to a specific bitwise type. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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