From b04b076fb56560b39d695ac3744db457e12278fd Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 19 May 2023 15:33:34 -0700 Subject: [PATCH] crypto: nx - fix build warnings when DEBUG_FS is not enabled MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Breno Leitão Cc: Nayna Jain Cc: Paulo Flabiano Smorigo Cc: Herbert Xu Cc: "David S. Miller" Cc: linux-crypto@vger.kernel.org Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Christophe Leroy Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Herbert Xu --- drivers/crypto/nx/Makefile | 2 +- drivers/crypto/nx/nx.h | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/crypto/nx/Makefile b/drivers/crypto/nx/Makefile index d00181a..483cef62 100644 --- a/drivers/crypto/nx/Makefile +++ b/drivers/crypto/nx/Makefile @@ -1,7 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_CRYPTO_DEV_NX_ENCRYPT) += nx-crypto.o nx-crypto-objs := nx.o \ - nx_debugfs.o \ nx-aes-cbc.o \ nx-aes-ecb.o \ nx-aes-gcm.o \ @@ -11,6 +10,7 @@ nx-crypto-objs := nx.o \ nx-sha256.o \ nx-sha512.o +nx-crypto-$(CONFIG_DEBUG_FS) += nx_debugfs.o obj-$(CONFIG_CRYPTO_DEV_NX_COMPRESS_PSERIES) += nx-compress-pseries.o nx-compress.o obj-$(CONFIG_CRYPTO_DEV_NX_COMPRESS_POWERNV) += nx-compress-powernv.o nx-compress.o nx-compress-objs := nx-842.o diff --git a/drivers/crypto/nx/nx.h b/drivers/crypto/nx/nx.h index c623317..2697bae 100644 --- a/drivers/crypto/nx/nx.h +++ b/drivers/crypto/nx/nx.h @@ -170,8 +170,8 @@ struct nx_sg *nx_walk_and_build(struct nx_sg *, unsigned int, void nx_debugfs_init(struct nx_crypto_driver *); void nx_debugfs_fini(struct nx_crypto_driver *); #else -#define NX_DEBUGFS_INIT(drv) (0) -#define NX_DEBUGFS_FINI(drv) (0) +#define NX_DEBUGFS_INIT(drv) do {} while (0) +#define NX_DEBUGFS_FINI(drv) do {} while (0) #endif #define NX_PAGE_NUM(x) ((u64)(x) & 0xfffffffffffff000ULL) -- 2.7.4