linux-kernel - [PATCH 5.18 0762/1095] interconnect: imx: fix max_node

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Date:   Mon, 15 Aug 2022 20:02:41 +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,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Peng Fan <peng.fan@....com>, Georgi Djakov <djakov@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 0762/1095] interconnect: imx: fix max_node_id

From: Peng Fan <peng.fan@....com>

[ Upstream commit bd734481e172b4827af09c9ab06c51d2ab7201e6 ]

max_node_id not equal to the ARRAY_SIZE of node array, need increase 1,
otherwise xlate will fail for the last entry. And rename max_node_id
to num_nodes to reflect the reality.

Fixes: f0d8048525d7d ("interconnect: Add imx core driver")
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Signed-off-by: Peng Fan <peng.fan@....com>
Link: https://lore.kernel.org/r/20220703091132.1412063-5-peng.fan@oss.nxp.com
Signed-off-by: Georgi Djakov <djakov@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/interconnect/imx/imx.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/interconnect/imx/imx.c b/drivers/interconnect/imx/imx.c
index 249ca25d1d55..4406ec45fa90 100644
--- a/drivers/interconnect/imx/imx.c
+++ b/drivers/interconnect/imx/imx.c
@@ -234,16 +234,16 @@ int imx_icc_register(struct platform_device *pdev,
 	struct device *dev = &pdev->dev;
 	struct icc_onecell_data *data;
 	struct icc_provider *provider;
-	int max_node_id;
+	int num_nodes;
 	int ret;
 
 	/* icc_onecell_data is indexed by node_id, unlike nodes param */
-	max_node_id = get_max_node_id(nodes, nodes_count);
-	data = devm_kzalloc(dev, struct_size(data, nodes, max_node_id),
+	num_nodes = get_max_node_id(nodes, nodes_count) + 1;
+	data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes),
 			    GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
-	data->num_nodes = max_node_id;
+	data->num_nodes = num_nodes;
 
 	provider = devm_kzalloc(dev, sizeof(*provider), GFP_KERNEL);
 	if (!provider)
-- 
2.35.1