From patchwork Sat Aug 15 10:37:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dafna Hirschfeld X-Patchwork-Id: 11715719 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2B4C7913 for ; Sat, 15 Aug 2020 21:56:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1BF8523142 for ; Sat, 15 Aug 2020 21:56:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728990AbgHOVwN (ORCPT ); Sat, 15 Aug 2020 17:52:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45624 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728991AbgHOVwG (ORCPT ); Sat, 15 Aug 2020 17:52:06 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F9CDC08E9A5 for ; Sat, 15 Aug 2020 03:37:58 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: dafna) with ESMTPSA id AC8D929A958 From: Dafna Hirschfeld To: linux-media@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, dafna.hirschfeld@collabora.com, helen.koike@collabora.com, ezequiel@collabora.com, hverkuil@xs4all.nl, kernel@collabora.com, dafna3@gmail.com, sakari.ailus@linux.intel.com, linux-rockchip@lists.infradead.org, mchehab@kernel.org, tfiga@chromium.org Subject: [PATCH v2 06/14] media: staging: rkisp1: params: in the isr, return if buffer list is empty Date: Sat, 15 Aug 2020 12:37:26 +0200 Message-Id: <20200815103734.31153-7-dafna.hirschfeld@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200815103734.31153-1-dafna.hirschfeld@collabora.com> References: <20200815103734.31153-1-dafna.hirschfeld@collabora.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Currently the code in the isr checks if the buffer list is not empty before referencing a buffer and then check again if the buffer is not NULL. Instead we can save one 'if' statement by returning if the buffers list is empty. Also remove non-helpful inline doc 'get one empty buffer' Signed-off-by: Dafna Hirschfeld Acked-by: Helen Koike --- drivers/staging/media/rkisp1/rkisp1-params.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/staging/media/rkisp1/rkisp1-params.c b/drivers/staging/media/rkisp1/rkisp1-params.c index 6a76c586e916..86bbd01e18c7 100644 --- a/drivers/staging/media/rkisp1/rkisp1-params.c +++ b/drivers/staging/media/rkisp1/rkisp1-params.c @@ -1206,16 +1206,14 @@ void rkisp1_params_isr(struct rkisp1_device *rkisp1) return; } - /* get one empty buffer */ - if (!list_empty(¶ms->params)) - cur_buf = list_first_entry(¶ms->params, - struct rkisp1_buffer, queue); - - if (!cur_buf) { + if (list_empty(¶ms->params)) { spin_unlock(¶ms->config_lock); return; } + cur_buf = list_first_entry(¶ms->params, + struct rkisp1_buffer, queue); + new_params = (struct rkisp1_params_cfg *)(cur_buf->vaddr[0]); rkisp1_isp_isr_other_config(params, new_params);