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-rw-r--r--include/crypto/skcipher.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h
index 562001cb412b..32aca5f4e4f0 100644
--- a/include/crypto/skcipher.h
+++ b/include/crypto/skcipher.h
@@ -206,6 +206,8 @@ static inline struct crypto_tfm *crypto_skcipher_tfm(
/**
* crypto_free_skcipher() - zeroize and free cipher handle
* @tfm: cipher handle to be freed
+ *
+ * If @tfm is a NULL or error pointer, this function does nothing.
*/
static inline void crypto_free_skcipher(struct crypto_skcipher *tfm)
{