On Sun, Feb 20, 2022 at 03:15:53PM -0800, Tong Zhang wrote:
> proc fs entries need to be removed when module is removed, otherwise
> when we try to insert the module again, kernel will complain
>
> [ 493.068012] proc_dir_entry 'net/ieee80211' already registered
> [ 493.271973] proc_mkdir+0x18/0x20
> [ 493.272136] ieee80211_debug_init+0x28/0xde8 [r8192u_usb]
> [ 493.272404] rtl8192_usb_module_init+0x10/0x161 [r8192u_usb]
>
> [ 13.910616] proc_dir_entry 'net/rtl819xU' already registered
> [ 13.918931] proc_mkdir+0x18/0x20
> [ 13.919098] rtl8192_usb_module_init+0x142/0x16d [r8192u_usb]
>
> Signed-off-by: Tong Zhang <ztong0001@xxxxxxxxx>
> ---
> drivers/staging/rtl8192u/r8192U_core.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
> index 364e1ca94f70..683afdc667bc 100644
> --- a/drivers/staging/rtl8192u/r8192U_core.c
> +++ b/drivers/staging/rtl8192u/r8192U_core.c
> @@ -4825,6 +4825,11 @@ static int __init rtl8192_usb_module_init(void)
> static void __exit rtl8192_usb_module_exit(void)
> {
> usb_deregister(&rtl8192_usb_driver);
> + remove_proc_entry(RTL819XU_MODULE_NAME, init_net.proc_net);
> +
> +#ifdef CONFIG_IEEE80211_DEBUG
> + ieee80211_debug_exit();
> +#endif
Please do not put #ifdef in .c files. They should be in a .h file
instead.
thanks,
greg k-h
