linux-kernel - [PATCH 5.10 109/717] firmware: arm_scmi: Fix missing destroy

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Date:   Mon, 28 Dec 2020 13:41:47 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Cristian Marussi <cristian.marussi@....com>,
        Qinglang Miao <miaoqinglang@...wei.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 109/717] firmware: arm_scmi: Fix missing destroy_workqueue()

From: Qinglang Miao <miaoqinglang@...wei.com>

[ Upstream commit 6bbdb46c4b1bd57839c9c0a110bd81b0be0a4046 ]

destroy_workqueue is required before the return from scmi_notification_init
in case devm_kcalloc fails to allocate registered_protocols. Fix this by
simply moving registered_protocols allocation before alloc_workqueue.

Link: https://lore.kernel.org/r/20201110074221.41235-1-miaoqinglang@huawei.com
Fixes: bd31b249692e ("firmware: arm_scmi: Add notification dispatch and delivery")
Suggested-by: Cristian Marussi <cristian.marussi@....com>
Reviewed-by: Cristian Marussi <cristian.marussi@....com>
Signed-off-by: Qinglang Miao <miaoqinglang@...wei.com>
Signed-off-by: Sudeep Holla <sudeep.holla@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/firmware/arm_scmi/notify.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/firmware/arm_scmi/notify.c b/drivers/firmware/arm_scmi/notify.c
index ce336899d6366..66196b293b6c2 100644
--- a/drivers/firmware/arm_scmi/notify.c
+++ b/drivers/firmware/arm_scmi/notify.c
@@ -1474,17 +1474,17 @@ int scmi_notification_init(struct scmi_handle *handle)
 	ni->gid = gid;
 	ni->handle = handle;
 
+	ni->registered_protocols = devm_kcalloc(handle->dev, SCMI_MAX_PROTO,
+						sizeof(char *), GFP_KERNEL);
+	if (!ni->registered_protocols)
+		goto err;
+
 	ni->notify_wq = alloc_workqueue(dev_name(handle->dev),
 					WQ_UNBOUND | WQ_FREEZABLE | WQ_SYSFS,
 					0);
 	if (!ni->notify_wq)
 		goto err;
 
-	ni->registered_protocols = devm_kcalloc(handle->dev, SCMI_MAX_PROTO,
-						sizeof(char *), GFP_KERNEL);
-	if (!ni->registered_protocols)
-		goto err;
-
 	mutex_init(&ni->pending_mtx);
 	hash_init(ni->pending_events_handlers);
 
-- 
2.27.0