[PATCH 5.8 433/633] rpmsg: smd: Fix a kobj leak in in qcom_smd_parse_edge()

Greg Kroah-Hartman
2020-10-27T17:02:50Z

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit e69ee0cf655e8e0c4a80f4319e36019b74f17639 ]

We need to call of_node_put(node) on the error paths for this function.

Fixes: 53e2822e56c7 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200908071841.GA294938@mwanda
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/rpmsg/qcom_smd.c | 32 ++++++++++++++++++++++----------
1 file changed, 22 insertions(+), 10 deletions(-)

diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 4abbeea782fa4..19903de6268db 100644
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1338,7 +1338,7 @@ static int qcom_smd_parse_edge(struct device *dev,
ret = of_property_read_u32(node, key, &edge->edge_id);
if (ret) {
dev_err(dev, "edge missing %s property\n", key);
- return -EINVAL;
+ goto put_node;
}

edge->remote_pid = QCOM_SMEM_HOST_ANY;
@@ -1349,32 +1349,37 @@ static int qcom_smd_parse_edge(struct device *dev,
edge->mbox_client.knows_txdone = true;
edge->mbox_chan = mbox_request_channel(&edge->mbox_client, 0);
if (IS_ERR(edge->mbox_chan)) {
- if (PTR_ERR(edge->mbox_chan) != -ENODEV)
- return PTR_ERR(edge->mbox_chan);
+ if (PTR_ERR(edge->mbox_chan) != -ENODEV) {
+ ret = PTR_ERR(edge->mbox_chan);
+ goto put_node;
+ }

edge->mbox_chan = NULL;

syscon_np = of_parse_phandle(node, "qcom,ipc", 0);
if (!syscon_np) {
dev_err(dev, "no qcom,ipc node\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto put_node;
}

edge->ipc_regmap = syscon_node_to_regmap(syscon_np);
- if (IS_ERR(edge->ipc_regmap))
- return PTR_ERR(edge->ipc_regmap);
+ if (IS_ERR(edge->ipc_regmap)) {
+ ret = PTR_ERR(edge->ipc_regmap);
+ goto put_node;
+ }

key = "qcom,ipc";
ret = of_property_read_u32_index(node, key, 1, &edge->ipc_offset);
if (ret < 0) {
dev_err(dev, "no offset in %s\n", key);
- return -EINVAL;
+ goto put_node;
}

ret = of_property_read_u32_index(node, key, 2, &edge->ipc_bit);
if (ret < 0) {
dev_err(dev, "no bit in %s\n", key);
- return -EINVAL;
+ goto put_node;
}
}

@@ -1385,7 +1390,8 @@ static int qcom_smd_parse_edge(struct device *dev,
irq = irq_of_parse_and_map(node, 0);
if (irq < 0) {
dev_err(dev, "required smd interrupt missing\n");
- return -EINVAL;
+ ret = irq;
+ goto put_node;
}

ret = devm_request_irq(dev, irq,
@@ -1393,12 +1399,18 @@ static int qcom_smd_parse_edge(struct device *dev,
node->name, edge);
if (ret) {
dev_err(dev, "failed to request smd irq\n");
- return ret;
+ goto put_node;
}

edge->irq = irq;

return 0;
+
+put_node:
+ of_node_put(node);
+ edge->of_node = NULL;
+
+ return ret;
}

/*
--
2.25.1