memcpy() can be safely called with size 0, which is a no-op. Remove the
unnecessary checks before calling memcpy().

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
 drivers/crypto/stm32/stm32-hash.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c
index a4436728b0db..d60147a7594e 100644
--- a/drivers/crypto/stm32/stm32-hash.c
+++ b/drivers/crypto/stm32/stm32-hash.c
@@ -1115,8 +1115,7 @@ static int stm32_hash_copy_sgs(struct stm32_hash_request_ctx *rctx,
 		return -ENOMEM;
 	}
 
-	if (state->bufcnt)
-		memcpy(buf, rctx->hdev->xmit_buf, state->bufcnt);
+	memcpy(buf, rctx->hdev->xmit_buf, state->bufcnt);
 
 	scatterwalk_map_and_copy(buf + state->bufcnt, sg, rctx->offset,
 				 min(new_len, rctx->total) - state->bufcnt, 0);
@@ -1300,8 +1299,7 @@ static int stm32_hash_prepare_request(struct ahash_request *req)
 	}
 
 	/* copy buffer in a temporary one that is used for sg alignment */
-	if (state->bufcnt)
-		memcpy(hdev->xmit_buf, state->buffer, state->bufcnt);
+	memcpy(hdev->xmit_buf, state->buffer, state->bufcnt);
 
 	ret = stm32_hash_align_sgs(req->src, nbytes, bs, init, final, rctx);
 	if (ret)
-- 
Thorsten Blum <thorsten.blum@linux.dev>
GPG: 1D60 735E 8AEF 3BE4 73B6  9D84 7336 78FD 8DFE EAD4

On Fri, Jan 09, 2026 at 03:20:36PM +0100, Thorsten Blum wrote:
> memcpy() can be safely called with size 0, which is a no-op. Remove the
> unnecessary checks before calling memcpy().
> 
> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
> ---
>  drivers/crypto/stm32/stm32-hash.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)

Patch applied.  Thanks.
-- 
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