init_ixp_crypto() calls of_parse_phandle_with_fixed_args() multiple
times, but does not release all the obtained refcounts. Fix it by adding
of_node_put() calls.
This bug was found by an experimental static analysis tool that I am
developing.
Fixes: 76f24b4f46b8 ("crypto: ixp4xx - Add device tree support")
Signed-off-by: Joe Hattori <joe@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c b/drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c
index 449c6d3ab2db..fcc0cf4df637 100644
--- a/drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c
+++ b/drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c
@@ -471,6 +471,7 @@ static int init_ixp_crypto(struct device *dev)
return -ENODEV;
}
npe_id = npe_spec.args[0];
+ of_node_put(npe_spec.np);
ret = of_parse_phandle_with_fixed_args(np, "queue-rx", 1, 0,
&queue_spec);
@@ -479,6 +480,7 @@ static int init_ixp_crypto(struct device *dev)
return -ENODEV;
}
recv_qid = queue_spec.args[0];
+ of_node_put(queue_spec.np);
ret = of_parse_phandle_with_fixed_args(np, "queue-txready", 1, 0,
&queue_spec);
@@ -487,6 +489,7 @@ static int init_ixp_crypto(struct device *dev)
return -ENODEV;
}
send_qid = queue_spec.args[0];
+ of_node_put(queue_spec.np);
} else {
/*
* Hardcoded engine when using platform data, this goes away
--
2.34.1
