Messages in this thread |  | | From | Baruch Siach <> | Subject | Re: [PATCH] tty/serial: digicolor: Fix digicolor-usart already registered warning | Date | Sat, 01 Jun 2019 23:21:28 +0300 |
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Hi Kefeng,
On Fri, May 31 2019, Kefeng Wang wrote: > 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>
Thanks, baruch
> --- > drivers/tty/serial/digicolor-usart.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/tty/serial/digicolor-usart.c b/drivers/tty/serial/digicolor-usart.c > index f460cca139e2..13ac36e2da4f 100644 > --- a/drivers/tty/serial/digicolor-usart.c > +++ b/drivers/tty/serial/digicolor-usart.c > @@ -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);
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