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-rw-r--r--include/crypto/hash.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 57c8a6ee33c2..8e920b44c0ac 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -63,6 +63,11 @@ struct ahash_request {
void *__ctx[] CRYPTO_MINALIGN_ATTR;
};
+#define AHASH_REQUEST_ON_STACK(name, ahash) \
+ char __##name##_desc[sizeof(struct ahash_request) + \
+ crypto_ahash_reqsize(ahash)] CRYPTO_MINALIGN_ATTR; \
+ struct ahash_request *name = (void *)__##name##_desc
+
/**
* struct ahash_alg - asynchronous message digest definition
* @init: Initialize the transformation context. Intended only to initialize the

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