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serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init 

commit 0c5fc92622 upstream.

Add the missing platform_driver_unregister() before return
from serial_txx9_init in the error handling case when failed
to register serial_txx9_pci_driver with macro ENABLE_SERIAL_TXX9_PCI
defined.

Fixes: ab4382d274 ("tty: move drivers/serial/ to drivers/tty/serial/")
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Link: https://lore.kernel.org/r/20201103084942.109076-1-miaoqinglang@huawei.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Qinglang Miao 2020-11-03 16:49:42 +08:00 committed by Greg Kroah-Hartman
parent 085fc4784e
commit 62c4b2b21e
1 changed files with 3 additions and 0 deletions
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3
drivers/tty/serial/serial_txx9.c
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@ -1283,6 +1283,9 @@ static int __init serial_txx9_init(void)
#ifdef ENABLE_SERIAL_TXX9_PCI
ret = pci_register_driver(&serial_txx9_pci_driver);
if (ret) {
platform_driver_unregister(&serial_txx9_plat_driver);
}
#endif
if (ret == 0)
goto out;