Re: [PATCH] staging: r8188eu: remove unnecessary NULL check

[Greg KH]

On Tue, Nov 23, 2021 at 01:23:50AM +0530, Vihas Mak wrote:
> remove unnecessary NULL check surrounding rtw_free_netdev(), as the check
> is already performed inside rtw_free_netdev() in
> drivers/staging/r8188eu/os_dep/osdep_service.c.
> 
> Signed-off-by: Vihas Mak <makvihas@xxxxxxxxx>
> ---
>  drivers/staging/r8188eu/os_dep/usb_intf.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/r8188eu/os_dep/usb_intf.c b/drivers/staging/r8188eu/os_dep/usb_intf.c
> index 5a35d9fe3fc9..392bd7868519 100644
> --- a/drivers/staging/r8188eu/os_dep/usb_intf.c
> +++ b/drivers/staging/r8188eu/os_dep/usb_intf.c
> @@ -466,8 +466,7 @@ static void rtw_usb_if1_deinit(struct adapter *if1)
>  		if1->hw_init_completed);
>  	rtw_handle_dualmac(if1, 0);
>  	rtw_free_drv_sw(if1);
> -	if (pnetdev)
> -		rtw_free_netdev(pnetdev);
> +	rtw_free_netdev(pnetdev);

As Dan said, this isn't usually a good idea to hide this.

And are you sure this ever could be NULL?

thanks,

greg k-h