hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

tty/serial: digicolor: Fix digicolor-usart already registered warning 

When modprobe/rmmod/modprobe module, if platform_driver_register() fails,
the kernel complained,

  proc_dir_entry 'driver/digicolor-usart' already registered
  WARNING: CPU: 1 PID: 5636 at fs/proc/generic.c:360 proc_register+0x19d/0x270

Fix this by adding uart_unregister_driver() when platform_driver_register() fails.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kefeng Wang 2019-05-31 21:37:33 +08:00 committed by Greg Kroah-Hartman
parent 929ffa4ade
commit c7ad9ba061
1 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/tty/serial/digicolor-usart.c
View File

@ -541,7 +541,11 @@ static int __init digicolor_uart_init(void)
if (ret)
return ret;
return platform_driver_register(&digicolor_uart_platform);
ret = platform_driver_register(&digicolor_uart_platform);
if (ret)
uart_unregister_driver(&digicolor_uart);
return ret;
}
module_init(digicolor_uart_init);