[PATCH] powerpc/crypto: fix build warnings when DEBUG_FS is not enabled

[Herbert Xu]

On Fri, May 19, 2023 at 03:33:34PM -0700, Randy Dunlap wrote:
> Fix build warnings when DEBUG_FS is not enabled by using an empty
> do-while loop instead of a value:
> 
> In file included from ../drivers/crypto/nx/nx.c:27:
> ../drivers/crypto/nx/nx.c: In function 'nx_register_algs':
> ../drivers/crypto/nx/nx.h:173:33: warning: statement with no effect [-Wunused-value]
>   173 | #define NX_DEBUGFS_INIT(drv)    (0)
> ../drivers/crypto/nx/nx.c:573:9: note: in expansion of macro 'NX_DEBUGFS_INIT'
>   573 |         NX_DEBUGFS_INIT(&nx_driver);
> ../drivers/crypto/nx/nx.c: In function 'nx_remove':
> ../drivers/crypto/nx/nx.h:174:33: warning: statement with no effect [-Wunused-value]
>   174 | #define NX_DEBUGFS_FINI(drv)    (0)
> ../drivers/crypto/nx/nx.c:793:17: note: in expansion of macro 'NX_DEBUGFS_FINI'
>   793 |                 NX_DEBUGFS_FINI(&nx_driver);
> 
> Also, there is no need to build nx_debugfs.o when DEBUG_FS is not
> enabled, so change the Makefile to accommodate that.
> 
> Fixes: ae0222b7289d ("powerpc/crypto: nx driver code supporting nx encryption")
> Fixes: aef7b31c8833 ("powerpc/crypto: Build files for the nx device driver")
> Signed-off-by: Randy Dunlap <rdunlap at infradead.org>
> Cc: Breno Leitão <leitao at debian.org>
> Cc: Nayna Jain <nayna at linux.ibm.com>
> Cc: Paulo Flabiano Smorigo <pfsmorigo at gmail.com>
> Cc: Herbert Xu <herbert at gondor.apana.org.au>
> Cc: "David S. Miller" <davem at davemloft.net>
> Cc: linux-crypto at vger.kernel.org
> Cc: Michael Ellerman <mpe at ellerman.id.au>
> Cc: Nicholas Piggin <npiggin at gmail.com>
> Cc: Christophe Leroy <christophe.leroy at csgroup.eu>
> Cc: linuxppc-dev at lists.ozlabs.org
> ---
>  drivers/crypto/nx/Makefile |    2 +-
>  drivers/crypto/nx/nx.h     |    4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt