linux-kernel - [PATCH 4.9 2/7] block: drbd: drbd_nl: Make conversion to enum drbd_ret

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Message-Id: <20220513142225.984359309@linuxfoundation.org>
Date:   Fri, 13 May 2022 16:23:17 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Philipp Reisner <philipp.reisner@...bit.com>,
        Lars Ellenberg <lars.ellenberg@...bit.com>,
        Jens Axboe <axboe@...nel.dk>, drbd-dev@...ts.linbit.com,
        linux-block@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
        Nathan Chancellor <nathan@...nel.org>
Subject: [PATCH 4.9 2/7] block: drbd: drbd_nl: Make conversion to enum drbd_ret_code explicit

From: Lee Jones <lee.jones@...aro.org>

commit 1f1e87b4dc4598eac57a69868534b92d65e47e82 upstream.

Fixes the following W=1 kernel build warning(s):

 from drivers/block/drbd/drbd_nl.c:24:
 drivers/block/drbd/drbd_nl.c: In function ‘drbd_adm_set_role’:
 drivers/block/drbd/drbd_nl.c:793:11: warning: implicit conversion from ‘enum drbd_state_rv’ to ‘enum drbd_ret_code’ [-Wenum-conversion]
 drivers/block/drbd/drbd_nl.c:795:11: warning: implicit conversion from ‘enum drbd_state_rv’ to ‘enum drbd_ret_code’ [-Wenum-conversion]
 drivers/block/drbd/drbd_nl.c: In function ‘drbd_adm_attach’:
 drivers/block/drbd/drbd_nl.c:1965:10: warning: implicit conversion from ‘enum drbd_state_rv’ to ‘enum drbd_ret_code’ [-Wenum-conversion]
 drivers/block/drbd/drbd_nl.c: In function ‘drbd_adm_connect’:
 drivers/block/drbd/drbd_nl.c:2690:10: warning: implicit conversion from ‘enum drbd_state_rv’ to ‘enum drbd_ret_code’ [-Wenum-conversion]
 drivers/block/drbd/drbd_nl.c: In function ‘drbd_adm_disconnect’:
 drivers/block/drbd/drbd_nl.c:2803:11: warning: implicit conversion from ‘enum drbd_state_rv’ to ‘enum drbd_ret_code’ [-Wenum-conversion]

Cc: Philipp Reisner <philipp.reisner@...bit.com>
Cc: Lars Ellenberg <lars.ellenberg@...bit.com>
Cc: Jens Axboe <axboe@...nel.dk>
Cc: drbd-dev@...ts.linbit.com
Cc: linux-block@...r.kernel.org
Signed-off-by: Lee Jones <lee.jones@...aro.org>
Link: https://lore.kernel.org/r/20210312105530.2219008-8-lee.jones@linaro.org
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Cc: Nathan Chancellor <nathan@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/block/drbd/drbd_nl.c |   13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -774,9 +774,11 @@ int drbd_adm_set_role(struct sk_buff *sk
 	mutex_lock(&adm_ctx.resource->adm_mutex);
 
 	if (info->genlhdr->cmd == DRBD_ADM_PRIMARY)
-		retcode = drbd_set_role(adm_ctx.device, R_PRIMARY, parms.assume_uptodate);
+		retcode = (enum drbd_ret_code)drbd_set_role(adm_ctx.device,
+						R_PRIMARY, parms.assume_uptodate);
 	else
-		retcode = drbd_set_role(adm_ctx.device, R_SECONDARY, 0);
+		retcode = (enum drbd_ret_code)drbd_set_role(adm_ctx.device,
+						R_SECONDARY, 0);
 
 	mutex_unlock(&adm_ctx.resource->adm_mutex);
 	genl_lock();
@@ -1933,7 +1935,7 @@ int drbd_adm_attach(struct sk_buff *skb,
 	drbd_flush_workqueue(&connection->sender_work);
 
 	rv = _drbd_request_state(device, NS(disk, D_ATTACHING), CS_VERBOSE);
-	retcode = rv;  /* FIXME: Type mismatch. */
+	retcode = (enum drbd_ret_code)rv;
 	drbd_resume_io(device);
 	if (rv < SS_SUCCESS)
 		goto fail;
@@ -2684,7 +2686,8 @@ int drbd_adm_connect(struct sk_buff *skb
 	}
 	rcu_read_unlock();
 
-	retcode = conn_request_state(connection, NS(conn, C_UNCONNECTED), CS_VERBOSE);
+	retcode = (enum drbd_ret_code)conn_request_state(connection,
+					NS(conn, C_UNCONNECTED), CS_VERBOSE);
 
 	conn_reconfig_done(connection);
 	mutex_unlock(&adm_ctx.resource->adm_mutex);
@@ -2790,7 +2793,7 @@ int drbd_adm_disconnect(struct sk_buff *
 	mutex_lock(&adm_ctx.resource->adm_mutex);
 	rv = conn_try_disconnect(connection, parms.force_disconnect);
 	if (rv < SS_SUCCESS)
-		retcode = rv;  /* FIXME: Type mismatch. */
+		retcode = (enum drbd_ret_code)rv;
 	else
 		retcode = NO_ERROR;
 	mutex_unlock(&adm_ctx.resource->adm_mutex);