4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yang Yingliang <yangyingliang@xxxxxxxxxx>
[ Upstream commit e3ea1b4847e49234e691c0d66bf030bd65bb7f2b ]
If device_register() returns error in pccardd(), it leads two issues:
1. The socket_released has never been completed, it will block
pcmcia_unregister_socket(), because of waiting for completion
of socket_released.
2. The device name allocated by dev_set_name() is leaked.
Fix this two issues by calling put_device() when device_register() fails.
socket_released can be completed in pcmcia_release_socket(), the name can
be freed in kobject_cleanup().
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/pcmcia/cs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
index 182e5ef4ab83d..e99ef7b745aeb 100644
--- a/drivers/pcmcia/cs.c
+++ b/drivers/pcmcia/cs.c
@@ -608,6 +608,7 @@ static int pccardd(void *__skt)
dev_warn(&skt->dev, "PCMCIA: unable to register socket\n");
skt->thread = NULL;
complete(&skt->thread_done);
+ put_device(&skt->dev);
return 0;
}
ret = pccard_sysfs_add_socket(&skt->dev);
--
2.42.0
