From patchwork Mon Oct 23 14:02:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13432891 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F003D19BC0 for ; Mon, 23 Oct 2023 14:02:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9646D73 for ; Mon, 23 Oct 2023 07:02:44 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4SDcLz50p5z6K9DQ; Mon, 23 Oct 2023 22:02:03 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Mon, 23 Oct 2023 15:02:40 +0100 From: Jonathan Cameron To: , , Michael Tsirkin , Michael Tokarev CC: , Fan Ni , =?utf-8?q?Philippe_M?= =?utf-8?q?athieu-Daud=C3=A9?= Subject: [PATCH v5 1/5] hw/cxl: Use a switch to explicitly check size in caps_reg_read() Date: Mon, 23 Oct 2023 15:02:06 +0100 Message-ID: <20231023140210.3089-2-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231023140210.3089-1-Jonathan.Cameron@huawei.com> References: <20231023140210.3089-1-Jonathan.Cameron@huawei.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml500005.china.huawei.com (7.191.163.240) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Bring this read function inline with the others that do check for unexpected size values. Also reduces line lengths to sub 80 chars. Signed-off-by: Jonathan Cameron Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Fan Ni --- hw/cxl/cxl-device-utils.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/hw/cxl/cxl-device-utils.c b/hw/cxl/cxl-device-utils.c index bd68328032..eb7195272e 100644 --- a/hw/cxl/cxl-device-utils.c +++ b/hw/cxl/cxl-device-utils.c @@ -32,10 +32,13 @@ static uint64_t caps_reg_read(void *opaque, hwaddr offset, unsigned size) { CXLDeviceState *cxl_dstate = opaque; - if (size == 4) { - return cxl_dstate->caps_reg_state32[offset / sizeof(*cxl_dstate->caps_reg_state32)]; - } else { - return cxl_dstate->caps_reg_state64[offset / sizeof(*cxl_dstate->caps_reg_state64)]; + switch (size) { + case 4: + return cxl_dstate->caps_reg_state32[offset / size]; + case 8: + return cxl_dstate->caps_reg_state64[offset / size]; + default: + g_assert_not_reached(); } }