From patchwork Tue Jan 15 03:37:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhi, Yong" X-Patchwork-Id: 10763951 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7C3B76C2 for ; Tue, 15 Jan 2019 03:37:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6ADA22BF9B for ; Tue, 15 Jan 2019 03:37:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5D2CE2C181; Tue, 15 Jan 2019 03:37:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E1B072BF9B for ; Tue, 15 Jan 2019 03:37:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727354AbfAODh5 (ORCPT ); Mon, 14 Jan 2019 22:37:57 -0500 Received: from mga12.intel.com ([192.55.52.136]:58713 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726769AbfAODh5 (ORCPT ); Mon, 14 Jan 2019 22:37:57 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Jan 2019 19:37:56 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,480,1539673200"; d="scan'208";a="114725376" Received: from harojas-mobl1.amr.corp.intel.com (HELO yzhi-desktop.amr.corp.intel.com) ([10.254.10.3]) by fmsmga007.fm.intel.com with ESMTP; 14 Jan 2019 19:37:55 -0800 From: Yong Zhi To: linux-media@vger.kernel.org, sakari.ailus@linux.intel.com Cc: tfiga@chromium.org, rajmohan.mani@intel.com, tian.shu.qiu@intel.com, laurent.pinchart@ideasonboard.com, hans.verkuil@cisco.com, mchehab@kernel.org, bingbu.cao@intel.com, dan.carpenter@oracle.com, Yong Zhi Subject: [PATCH 2/2] media: ipu3-imgu: Remove dead code for NULL check Date: Mon, 14 Jan 2019 21:37:45 -0600 Message-Id: <1547523465-27807-2-git-send-email-yong.zhi@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1547523465-27807-1-git-send-email-yong.zhi@intel.com> References: <1547523465-27807-1-git-send-email-yong.zhi@intel.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Since ipu3_css_buf_dequeue() never returns NULL, remove the dead code to fix static checker warning: drivers/staging/media/ipu3/ipu3.c:493 imgu_isr_threaded() warn: 'b' is an error pointer or valid Signed-off-by: Yong Zhi --- Link to Dan's bug report: https://www.spinics.net/lists/linux-media/msg145043.html drivers/staging/media/ipu3/ipu3.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/staging/media/ipu3/ipu3.c b/drivers/staging/media/ipu3/ipu3.c index d521b3afb8b1..839d9398f8e9 100644 --- a/drivers/staging/media/ipu3/ipu3.c +++ b/drivers/staging/media/ipu3/ipu3.c @@ -489,12 +489,11 @@ static irqreturn_t imgu_isr_threaded(int irq, void *imgu_ptr) mutex_unlock(&imgu->lock); } while (PTR_ERR(b) == -EAGAIN); - if (IS_ERR_OR_NULL(b)) { - if (!b || PTR_ERR(b) == -EBUSY) /* All done */ - break; - dev_err(&imgu->pci_dev->dev, - "failed to dequeue buffers (%ld)\n", - PTR_ERR(b)); + if (IS_ERR(b)) { + if (PTR_ERR(b) != -EBUSY) /* All done */ + dev_err(&imgu->pci_dev->dev, + "failed to dequeue buffers (%ld)\n", + PTR_ERR(b)); break; }