From: Miaoqian Lin <linmq006@xxxxxxxxx>
[ Upstream commit 07a5dcc4bed9d7cae54adf5aa10ff9f037a3204b ]
The device_node pointer is returned by of_parse_phandle() or
of_get_child_by_name() with refcount incremented.
We should use of_node_put() on it when done.
This function only call of_node_put(node) when of_address_to_resource
succeeds, missing error cases.
Fixes: 278d744c46fd ("remoteproc: qcom: Fix potential device node leaks")
Fixes: 051fb70fd4ea ("remoteproc: qcom: Driver for the self-authenticating Hexagon v5")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220308064522.13804-1-linmq006@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/remoteproc/qcom_q6v5_mss.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index 423b31dfa574..ca1c7387776b 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -1624,18 +1624,20 @@ static int q6v5_alloc_memory_region(struct q6v5 *qproc)
* reserved memory regions from device's memory-region property.
*/
child = of_get_child_by_name(qproc->dev->of_node, "mba");
- if (!child)
+ if (!child) {
node = of_parse_phandle(qproc->dev->of_node,
"memory-region", 0);
- else
+ } else {
node = of_parse_phandle(child, "memory-region", 0);
+ of_node_put(child);
+ }
ret = of_address_to_resource(node, 0, &r);
+ of_node_put(node);
if (ret) {
dev_err(qproc->dev, "unable to resolve mba region\n");
return ret;
}
- of_node_put(node);
qproc->mba_phys = r.start;
qproc->mba_size = resource_size(&r);
@@ -1646,14 +1648,15 @@ static int q6v5_alloc_memory_region(struct q6v5 *qproc)
} else {
child = of_get_child_by_name(qproc->dev->of_node, "mpss");
node = of_parse_phandle(child, "memory-region", 0);
+ of_node_put(child);
}
ret = of_address_to_resource(node, 0, &r);
+ of_node_put(node);
if (ret) {
dev_err(qproc->dev, "unable to resolve mpss region\n");
return ret;
}
- of_node_put(node);
qproc->mpss_phys = qproc->mpss_reloc = r.start;
qproc->mpss_size = resource_size(&r);
--
2.34.1
