From: Yuan Can yuancan@huawei.com
[ Upstream commit 1a6ec673fb627c26e2267ca0a03849f91dbd9b40 ]
The sunsab_init() returns the platform_driver_register() directly without checking its return value, if platform_driver_register() failed, the allocated sunsab_ports is leaked. Fix by free sunsab_ports and set it to NULL when platform_driver_register() failed.
Fixes: c4d37215a824 ("[SERIAL] sunsab: Convert to of_driver framework.") Signed-off-by: Yuan Can yuancan@huawei.com Link: https://lore.kernel.org/r/20221123061212.52593-1-yuancan@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/tty/serial/sunsab.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c index 72131b5e132e..beca02c30498 100644 --- a/drivers/tty/serial/sunsab.c +++ b/drivers/tty/serial/sunsab.c @@ -1140,7 +1140,13 @@ static int __init sunsab_init(void) } }
- return platform_driver_register(&sab_driver); + err = platform_driver_register(&sab_driver); + if (err) { + kfree(sunsab_ports); + sunsab_ports = NULL; + } + + return err; }
static void __exit sunsab_exit(void)