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crypto: aegis128 - fix link error without SIMD

Message ID 20201203222557.952393-1-arnd@kernel.org (mailing list archive)
State Not Applicable
Delegated to: Herbert Xu
Headers show
Series crypto: aegis128 - fix link error without SIMD | expand

Commit Message

Arnd Bergmann Dec. 3, 2020, 10:25 p.m. UTC
From: Arnd Bergmann <arnd@arndb.de>

When the SIMD portion of the driver is disabled, the compiler cannot
figure out in advance if it will be called:

ERROR: modpost: "crypto_aegis128_update_simd" [crypto/aegis128.ko] undefined!

Add a conditional to let the compiler use dead code elimination
as before.

Fixes: ac50aec41a9f ("crypto: aegis128 - expose SIMD code path as separate driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 crypto/aegis128-core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Ard Biesheuvel Dec. 4, 2020, 8:22 a.m. UTC | #1
On Thu, 3 Dec 2020 at 23:26, Arnd Bergmann <arnd@kernel.org> wrote:
>
> From: Arnd Bergmann <arnd@arndb.de>
>
> When the SIMD portion of the driver is disabled, the compiler cannot
> figure out in advance if it will be called:
>
> ERROR: modpost: "crypto_aegis128_update_simd" [crypto/aegis128.ko] undefined!
>
> Add a conditional to let the compiler use dead code elimination
> as before.
>
> Fixes: ac50aec41a9f ("crypto: aegis128 - expose SIMD code path as separate driver")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

I already sent the exact same fix a couple of days ago, and Herbert
just merged it today.

> ---
>  crypto/aegis128-core.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/crypto/aegis128-core.c b/crypto/aegis128-core.c
> index 2b05f79475d3..89dc1c559689 100644
> --- a/crypto/aegis128-core.c
> +++ b/crypto/aegis128-core.c
> @@ -89,7 +89,7 @@ static void crypto_aegis128_update_a(struct aegis_state *state,
>                                      const union aegis_block *msg,
>                                      bool do_simd)
>  {
> -       if (do_simd) {
> +       if (IS_ENABLED(CONFIG_CRYPTO_AEGIS128_SIMD) && do_simd) {
>                 crypto_aegis128_update_simd(state, msg);
>                 return;
>         }
> @@ -101,7 +101,7 @@ static void crypto_aegis128_update_a(struct aegis_state *state,
>  static void crypto_aegis128_update_u(struct aegis_state *state, const void *msg,
>                                      bool do_simd)
>  {
> -       if (do_simd) {
> +       if (IS_ENABLED(CONFIG_CRYPTO_AEGIS128_SIMD) && do_simd) {
>                 crypto_aegis128_update_simd(state, msg);
>                 return;
>         }
> --
> 2.27.0
>
diff mbox series

Patch

diff --git a/crypto/aegis128-core.c b/crypto/aegis128-core.c
index 2b05f79475d3..89dc1c559689 100644
--- a/crypto/aegis128-core.c
+++ b/crypto/aegis128-core.c
@@ -89,7 +89,7 @@  static void crypto_aegis128_update_a(struct aegis_state *state,
 				     const union aegis_block *msg,
 				     bool do_simd)
 {
-	if (do_simd) {
+	if (IS_ENABLED(CONFIG_CRYPTO_AEGIS128_SIMD) && do_simd) {
 		crypto_aegis128_update_simd(state, msg);
 		return;
 	}
@@ -101,7 +101,7 @@  static void crypto_aegis128_update_a(struct aegis_state *state,
 static void crypto_aegis128_update_u(struct aegis_state *state, const void *msg,
 				     bool do_simd)
 {
-	if (do_simd) {
+	if (IS_ENABLED(CONFIG_CRYPTO_AEGIS128_SIMD) && do_simd) {
 		crypto_aegis128_update_simd(state, msg);
 		return;
 	}