[PATCH AUTOSEL 5.15 26/47] HSI: ssi_protocol: fix potential resource leak in ssip_pn_open()

Sasha Levin
2022-10-13T00:26:53Z

From: Jianglei Nie <niejianglei2021@163.com>

[ Upstream commit b28dbcb379e6a7f80262c2732a57681b1ee548ca ]

ssip_pn_open() claims the HSI client's port with hsi_claim_port(). When
hsi_register_port_event() gets some error and returns a negetive value,
the HSI client's port should be released with hsi_release_port().

Fix it by calling hsi_release_port() when hsi_register_port_event() fails.

Signed-off-by: Jianglei Nie <niejianglei2021@163.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hsi/clients/ssi_protocol.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/hsi/clients/ssi_protocol.c b/drivers/hsi/clients/ssi_protocol.c
index 96d0eccca3aa..f202751484aa 100644
--- a/drivers/hsi/clients/ssi_protocol.c
+++ b/drivers/hsi/clients/ssi_protocol.c
@@ -931,6 +931,7 @@ static int ssip_pn_open(struct net_device *dev)
if (err < 0) {
dev_err(&cl->device, "Register HSI port event failed (%d)\n",
err);
+ hsi_release_port(cl);
return err;
}
dev_dbg(&cl->device, "Configuring SSI port\n");
--
2.35.1