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: 11715381 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 EDBED13A4 for ; Sat, 15 Aug 2020 10:38:11 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C79722310B for ; Sat, 15 Aug 2020 10:38:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="1dH+MsyN" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C79722310B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=PXVOBI22L6Yzbtfu7pc5afy1iExH7rJ2nVP5NnSWXHY=; b=1dH+MsyNKue+N+D6FfUDALeTpF Ozu3PbwL8Ta8JMYYRX1p12DajvoZMjFw/tt1NR9NiXvO2mFrI2uKx0eGoCwMiIWCMxQLwt34XbZVP W9RVAQ+ubXS797zVjb+zUAFSuiG770qtV4of3tiIhVIyAHg5poIjY6cwl+/lJmEhV+WE55cJnnPPv 8ugF7MMGryNIJ02C7tle2aRJMuX8cNKd/VP7U2h8TafAx76yu+KIq0rkpHcLXfk/7aQ2OXl9svfNi sBQPi6x3AGsIios3c9wDd4r6bfrUBpgORtvphYSOC/wNqUQ2fRkfr7tLd5+grnZUU5SwaKUUziTW3 EqId/naA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k6tZe-0001Kx-H1; Sat, 15 Aug 2020 10:38:06 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k6tZV-0001Ca-2Y for linux-rockchip@lists.infradead.org; Sat, 15 Aug 2020 10:37:58 +0000 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 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> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200815_063757_245070_0A6D6022 X-CRM114-Status: GOOD ( 11.95 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mchehab@kernel.org, dafna.hirschfeld@collabora.com, dafna3@gmail.com, tfiga@chromium.org, hverkuil@xs4all.nl, linux-rockchip@lists.infradead.org, helen.koike@collabora.com, laurent.pinchart@ideasonboard.com, sakari.ailus@linux.intel.com, kernel@collabora.com, ezequiel@collabora.com MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.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);