From patchwork Mon Jun 6 08:00:48 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cao jin X-Patchwork-Id: 9157341 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7135060467 for ; Mon, 6 Jun 2016 07:56:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6442C26D17 for ; Mon, 6 Jun 2016 07:56:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 59666272AA; Mon, 6 Jun 2016 07:56:45 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D7B2B26D17 for ; Mon, 6 Jun 2016 07:56:44 +0000 (UTC) Received: from localhost ([::1]:40500 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b9pOt-0006Wo-VE for patchwork-qemu-devel@patchwork.kernel.org; Mon, 06 Jun 2016 03:56:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44197) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b9pOO-0006UX-E4 for qemu-devel@nongnu.org; Mon, 06 Jun 2016 03:56:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b9pOJ-0000UJ-Rt for qemu-devel@nongnu.org; Mon, 06 Jun 2016 03:56:12 -0400 Received: from [59.151.112.132] (port=63643 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b9pOH-0000NI-M2 for qemu-devel@nongnu.org; Mon, 06 Jun 2016 03:56:07 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="7397492" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 06 Jun 2016 15:55:44 +0800 Received: from G08CNEXCHPEKD03.g08.fujitsu.local (unknown [10.167.33.85]) by cn.fujitsu.com (Postfix) with ESMTP id 1277543465BD; Mon, 6 Jun 2016 15:55:44 +0800 (CST) Received: from G08FNSTD140223.g08.fujitsu.local (10.167.226.69) by G08CNEXCHPEKD03.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.279.2; Mon, 6 Jun 2016 15:55:43 +0800 From: Cao jin To: Date: Mon, 6 Jun 2016 16:00:48 +0800 Message-ID: <1465200062-13824-2-git-send-email-caoj.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1465200062-13824-1-git-send-email-caoj.fnst@cn.fujitsu.com> References: <1465200062-13824-1-git-send-email-caoj.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.69] X-yoursite-MailScanner-ID: 1277543465BD.A9EBC X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: caoj.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Subject: [Qemu-devel] [PATCH v7 01/15] pci core: assert ENOSPC when add capability X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marcel Apfelbaum , Markus Armbruster , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP ENOSPC is programming error, assert it for debugging. cc: Michael S. Tsirkin cc: Marcel Apfelbaum cc: Markus Armbruster Reviewed-by: Marcel Apfelbaum Signed-off-by: Cao jin --- hw/pci/pci.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 06d3117..26f387c 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -2152,10 +2152,8 @@ int pci_add_capability2(PCIDevice *pdev, uint8_t cap_id, if (!offset) { offset = pci_find_space(pdev, size); - if (!offset) { - error_setg(errp, "out of PCI config space"); - return -ENOSPC; - } + /* out of PCI config space is programming error */ + assert(offset); } else { /* Verify that capabilities don't overlap. Note: device assignment * depends on this check to verify that the device is not broken.