drbd: Remove now-unused int_dig_out buffer

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

drivers/block/drbd/drbd_int.h

@@ -893,7 +893,6 @@ struct drbd_tconn {			/* is a resource from the config file */
 	struct crypto_hash *integrity_r_tfm; /* to be used by the receiver thread */
 	struct crypto_hash *csums_tfm;
 	struct crypto_hash *verify_tfm;
-	void *int_dig_out;
 	void *int_dig_in;
 	void *int_dig_vv;
 

drivers/block/drbd/drbd_main.c

@@ -2404,7 +2404,6 @@ void drbd_free_tconn(struct drbd_tconn *tconn)
 	drbd_free_socket(&tconn->meta);
 	drbd_free_socket(&tconn->data);
 	kfree(tconn->name);
-	kfree(tconn->int_dig_out);
 	kfree(tconn->int_dig_in);
 	kfree(tconn->int_dig_vv);
 	kfree(tconn);

drivers/block/drbd/drbd_nl.c

@@ -1781,7 +1781,6 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
 	struct crypto_hash *tfm = NULL;
 	struct crypto_hash *integrity_w_tfm = NULL;
 	struct crypto_hash *integrity_r_tfm = NULL;
-	void *int_dig_out = NULL;
 	void *int_dig_in = NULL;
 	void *int_dig_vv = NULL;
 	struct drbd_tconn *oconn;
@@ -1955,11 +1954,6 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
 	/* allocation not in the IO path, cqueue thread context */
 	if (integrity_w_tfm) {
 		i = crypto_hash_digestsize(integrity_w_tfm);
-		int_dig_out = kmalloc(i, GFP_KERNEL);
-		if (!int_dig_out) {
-			retcode = ERR_NOMEM;
-			goto fail;
-		}
 		int_dig_in = kmalloc(i, GFP_KERNEL);
 		if (!int_dig_in) {
 			retcode = ERR_NOMEM;
@@ -1990,10 +1984,8 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
 	crypto_free_hash(tconn->integrity_r_tfm);
 	tconn->integrity_r_tfm = integrity_r_tfm;
 
-	kfree(tconn->int_dig_out);
 	kfree(tconn->int_dig_in);
 	kfree(tconn->int_dig_vv);
-	tconn->int_dig_out=int_dig_out;
 	tconn->int_dig_in=int_dig_in;
 	tconn->int_dig_vv=int_dig_vv;
 	retcode = _conn_request_state(tconn, NS(conn, C_UNCONNECTED), CS_VERBOSE);
@@ -2009,7 +2001,6 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
 	return 0;
 
 fail:
-	kfree(int_dig_out);
 	kfree(int_dig_in);
 	kfree(int_dig_vv);
 	crypto_free_hash(tfm);