Minor improvements to CAMELLIA documentation
diff --git a/include/mbedtls/camellia.h b/include/mbedtls/camellia.h
index 8e9cb26..02084e2 100644
--- a/include/mbedtls/camellia.h
+++ b/include/mbedtls/camellia.h
@@ -159,15 +159,15 @@
* and bound to a key.
* \param mode The mode of operation. This must be either
* #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT.
- * \param length The length in Bytes of the input data.
- * Must be a multiple of \c 16.
+ * \param length The length in Bytes of the input data \p input.
+ * This must be a multiple of \c 16.
* \param iv The initialization vector. This must be RW buffer
* of length \c 16 Bytes. It is updated to allow streaming
* use as explained above.
* \param input The buffer holding the input data. This must point to a
* readable buffer of length \p length Bytes. This may be
* \c NULL if `length == 0`.
- * \param input The buffer holding the output data. This must point to a
+ * \param output The buffer holding the output data. This must point to a
* writable buffer of length \p length Bytes. This may be
* \c NULL if `length == 0`.
*
@@ -204,7 +204,7 @@
* and bound to a key.
* \param mode The mode of operation. This must be either
* #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT.
- * \param length The length of the input data. Any value is allowed.
+ * \param length The length of the input data \p input. Any value is allowed.
* \param iv_off The current offset in the IV. This must be smaller
* than \c 16. It is updated after this call to allow
* the aforementioned streaming usage.
@@ -284,8 +284,10 @@
* content must not be written to insecure storage and should be
* securely discarded as soon as it's no longer needed.
*
- * \param ctx The CAMELLIA context to use.
- * \param length The length of the input data. Any value is allowed.
+ * \param ctx The CAMELLIA context to use. This must be initialized
+ * and bound to a key.
+ * \param length The length of the input data \p input.
+ * Any value is allowed.
* \param nc_off The offset in the current \p stream_block (for resuming
* within current cipher stream). The offset pointer to
* should be \c 0 at the start of a stream. It is updated