From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5318268 for ; Wed, 24 Nov 2021 10:00:21 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 3569E60FE7; Wed, 24 Nov 2021 10:00:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637748020; bh=Y7OGHmzM/QRiOXEQt1GwzlAHT6uWnRqHgOUzWOS2iMw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=jKq6Ay/c5woTlEQcoBB4DNSe7x/yuYbxxn9l4si8KBWSNXaznCi+qUOSbW/OIjp52 8EIfEBD3jvqqUB1oGI3J2eKfjwCr2Z649lMszCqqUvJTy3kwwrgSzf4bXwGFv/3157 LGRbrj7ggrodBQCr7U3mrj91ziuQueGxnnI0/TCg= Date: Wed, 24 Nov 2021 11:00:15 +0100 From: Greg KH To: Vihas Mak Cc: Larry.Finger@lwfinger.net, phil@philpotter.co.uk, straube.linux@gmail.com, martin@kaiser.cx, paskripkin@gmail.com, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] staging: r8188eu: remove unnecessary NULL check Message-ID: References: <20211122195350.GA166134@makvihas> Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211122195350.GA166134@makvihas> 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 > --- > 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