From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felix Manlunas Subject: [PATCH net-next] liquidio: fix Smatch error Date: Fri, 18 Aug 2017 13:07:19 -0700 Message-ID: <20170818200719.GA4685@felix-thinkpad.cavium.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, raghu.vatsavayi@cavium.com, derek.chickles@cavium.com, satananda.burla@cavium.com, intiyaz.basha@cavium.com To: davem@davemloft.net Return-path: Received: from mail-sn1nam01on0064.outbound.protection.outlook.com ([104.47.32.64]:65456 "EHLO NAM01-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751687AbdHRUHJ (ORCPT ); Fri, 18 Aug 2017 16:07:09 -0400 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: From: Intiyaz Basha Fix Smatch error by not dereferencing iq pointer if it's NULL. See http://marc.info/?l=kernel-janitors&m=150296723301129&w=2 Also, remove unnecessary parentheses. Fixes: d314ac222829 ("liquidio: moved liquidio_napi_poll to lio_core.c") Reported-by: Dan Carpenter Signed-off-by: Intiyaz Basha Signed-off-by: Felix Manlunas --- drivers/net/ethernet/cavium/liquidio/lio_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/cavium/liquidio/lio_core.c b/drivers/net/ethernet/cavium/liquidio/lio_core.c index d4f0646..0e7896c 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_core.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_core.c @@ -668,8 +668,8 @@ static int liquidio_napi_poll(struct napi_struct *napi, int budget) #define MAX_REG_CNT 2000000U /* force enable interrupt if reg cnts are high to avoid wraparound */ - if (((work_done < budget) && (tx_done)) || - (iq->pkt_in_done >= MAX_REG_CNT) || + if ((work_done < budget && tx_done) || + (iq && iq->pkt_in_done >= MAX_REG_CNT) || (droq->pkt_count >= MAX_REG_CNT)) { tx_done = 1; napi_complete_done(napi, work_done); -- 1.8.3.1