From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751488AbcEDFN4 (ORCPT ); Wed, 4 May 2016 01:13:56 -0400 Received: from mail-pa0-f66.google.com ([209.85.220.66]:33469 "EHLO mail-pa0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751293AbcEDFNy (ORCPT ); Wed, 4 May 2016 01:13:54 -0400 Date: Wed, 4 May 2016 14:13:04 +0900 From: Daeseok Youn To: lidza.louina@gmail.com Cc: markh@compro.net, gregkh@linuxfoundation.org, driverdev-devel@linuxdriverproject.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH 1/3] staging: dgnc: remove redundant NULL check in Message-ID: <20160504051304.GA20929@certreview.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tty and ch are already checked for NULL before calling dgnc_block_til_ready(). Signed-off-by: Daeseok Youn --- drivers/staging/dgnc/dgnc_tty.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/staging/dgnc/dgnc_tty.c b/drivers/staging/dgnc/dgnc_tty.c index 2cecdb0..d85d005 100644 --- a/drivers/staging/dgnc/dgnc_tty.c +++ b/drivers/staging/dgnc/dgnc_tty.c @@ -1172,17 +1172,12 @@ static int dgnc_block_til_ready(struct tty_struct *tty, struct channel_t *ch) { int retval = 0; - struct un_t *un = NULL; + struct un_t *un = tty->driver_data; unsigned long flags; uint old_flags = 0; int sleep_on_un_flags = 0; - if (!tty || tty->magic != TTY_MAGIC || !file || !ch || - ch->magic != DGNC_CHANNEL_MAGIC) - return -ENXIO; - - un = tty->driver_data; - if (!un || un->magic != DGNC_UNIT_MAGIC) + if (!file) return -ENXIO; spin_lock_irqsave(&ch->ch_lock, flags); -- 2.8.2