This is a note to let you know that I've just added the patch titled serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: serial-txx9-add-missing-platform_driver_unregister-on-error-in-serial_txx9_init.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 0c5fc92622ed5531ff324b20f014e9e3092f0187 Mon Sep 17 00:00:00 2001 From: Qinglang Miao <miaoqinglang@xxxxxxxxxx> Date: Tue, 3 Nov 2020 16:49:42 +0800 Subject: serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init From: Qinglang Miao <miaoqinglang@xxxxxxxxxx> commit 0c5fc92622ed5531ff324b20f014e9e3092f0187 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: ab4382d27412 ("tty: move drivers/serial/ to drivers/tty/serial/") Signed-off-by: Qinglang Miao <miaoqinglang@xxxxxxxxxx> Link: https://lore.kernel.org/r/20201103084942.109076-1-miaoqinglang@xxxxxxxxxx Cc: stable <stable@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/tty/serial/serial_txx9.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/tty/serial/serial_txx9.c +++ b/drivers/tty/serial/serial_txx9.c @@ -1284,6 +1284,9 @@ 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; Patches currently in stable-queue which might be from miaoqinglang@xxxxxxxxxx are queue-4.19/serial-txx9-add-missing-platform_driver_unregister-on-error-in-serial_txx9_init.patch