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SubjectRe: [PATCH 1/1] crypto: ux500: hash: Add namespacing to hash_init()
On Mon, Jun 29, 2020 at 01:30:03PM +0100, Lee Jones wrote:
> A recent change to the Regulator consumer API (which this driver
> utilises) add prototypes for the some suspend functions. These
> functions require including header file include/linux/suspend.h.
>
> The following tree of includes affecting this driver will be
> present:
>
> In file included from include/linux/elevator.h:6,
> from include/linux/blkdev.h:288,
> from include/linux/blk-cgroup.h:23,
> from include/linux/writeback.h:14,
> from include/linux/memcontrol.h:22,
> from include/linux/swap.h:9,
> from include/linux/suspend.h:5,
> from include/linux/regulator/consumer.h:35,
> from drivers/crypto/ux500/hash/hash_core.c:28:
>
> include/linux/elevator.h pulls in include/linux/hashtable.h which
> contains its own version of hash_init(). This confuses the build
> system and results in the following error (amongst others):
>
> drivers/crypto/ux500/hash/hash_core.c:1362:19: error: passing argument 1 of '__hash_init' from incompatible pointer type [-Werror=incompatible-pointer-types]
> 1362 | return hash_init(req);
>
> Fix this by namespacing the local hash_init() such that the
> source of confusion is removed.
>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Cc: Herbert Xu <herbert@gondor.apana.org.au>
> Cc: David S. Miller <davem@davemloft.net>
> Cc: linux-crypto@vger.kernel.org
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
>
> Ideally this should go into v5.8's -rcs else it runs the risk of
> breaking when Linus pulls everything in for v5.9-rc1.

I have no objections to this patch. However, I'd rather put
it on a topic branch which you could pull rather than pushing
it into 5.8 straight away.

I also dislike pulling in the kitchen sink when all you need in
consumer.h is the definition of suspend_state_t. A better solution
would be to move the definition of suspend_state_t into linux/types.h
and including that instead of suspend.h in consumer.h.

Cheers,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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