From patchwork Wed May 22 04:40:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 13670402 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2BD04C25B7D for ; Wed, 22 May 2024 04:43:49 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s9dob-0001SF-KV; Wed, 22 May 2024 00:43:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s9doZ-0001QU-VR for qemu-devel@nongnu.org; Wed, 22 May 2024 00:42:59 -0400 Received: from mgamail.intel.com ([192.198.163.10]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s9doY-0005uB-8g for qemu-devel@nongnu.org; Wed, 22 May 2024 00:42:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1716352978; x=1747888978; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=C/A9yvMH2CsXWTC4vyEkxTbhyKMCw2D1NBbb5lb7oFU=; b=BgSi0bnqgi+45P+BmBV/5lXIGyqVrFU4CmeySPMj1hH2mwhTwu0zCNJC U7sEfrvXbV2g7YNyJigJAYuemZzbY5L2QZjdq3eu+6hMbB7PUHHtO+T6M h0TToA5rODOpt2cXdWfZ+S7GVkqH/2WOTHklRwL5Z5AtXCfAbSR4ZgwIB clsCsSOVavD56DZ5OEPBsZlLDXo1dSnW+a9Sf55w3ipvHL7UbEofCTD06 D9dVkbqFAWRoy7qspimchoLyERzlBbyePn9wLRrKDTWTqlwXo+YRfZs2H ObGg4HFmGEoZ7JukkKRwJ7iyBgc16mWgxcWX+UIIA34BeyTFcZMZq0eCZ w==; X-CSE-ConnectionGUID: //6rTQtGRRmZzVoeW3SBmA== X-CSE-MsgGUID: 67fNhA3zT8+qcQX6v3EeEg== X-IronPort-AV: E=McAfee;i="6600,9927,11079"; a="23994145" X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="23994145" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2024 21:42:57 -0700 X-CSE-ConnectionGUID: wl2+Ngo5QI25EXNkwXfBbw== X-CSE-MsgGUID: V49bwSJ2TeK/DS9z+wCTWg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="33683717" Received: from unknown (HELO SPR-S2600BT.bj.intel.com) ([10.240.192.124]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2024 21:42:55 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, chao.p.peng@intel.com, Zhenzhong Duan Subject: [PATCH v2 08/20] vfio/pci: Make vfio_intx_enable_kvm() return a bool Date: Wed, 22 May 2024 12:40:03 +0800 Message-Id: <20240522044015.412951-9-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240522044015.412951-1-zhenzhong.duan@intel.com> References: <20240522044015.412951-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.198.163.10; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Since vfio_intx_enable_kvm() takes an 'Error **' argument, best practices suggest to return a bool. See the qapi/error.h Rules section. Signed-off-by: Zhenzhong Duan Reviewed-by: Cédric Le Goater --- hw/vfio/pci.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index aad012c348..12fb534d79 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -116,7 +116,7 @@ static void vfio_intx_eoi(VFIODevice *vbasedev) vfio_unmask_single_irqindex(vbasedev, VFIO_PCI_INTX_IRQ_INDEX); } -static void vfio_intx_enable_kvm(VFIOPCIDevice *vdev, Error **errp) +static bool vfio_intx_enable_kvm(VFIOPCIDevice *vdev, Error **errp) { #ifdef CONFIG_KVM int irq_fd = event_notifier_get_fd(&vdev->intx.interrupt); @@ -124,7 +124,7 @@ static void vfio_intx_enable_kvm(VFIOPCIDevice *vdev, Error **errp) if (vdev->no_kvm_intx || !kvm_irqfds_enabled() || vdev->intx.route.mode != PCI_INTX_ENABLED || !kvm_resamplefds_enabled()) { - return; + return true; } /* Get to a known interrupt state */ @@ -161,7 +161,7 @@ static void vfio_intx_enable_kvm(VFIOPCIDevice *vdev, Error **errp) trace_vfio_intx_enable_kvm(vdev->vbasedev.name); - return; + return true; fail_vfio: kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, &vdev->intx.interrupt, @@ -171,6 +171,9 @@ fail_irqfd: fail: qemu_set_fd_handler(irq_fd, vfio_intx_interrupt, NULL, vdev); vfio_unmask_single_irqindex(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX); + return false; +#else + return true; #endif } @@ -226,8 +229,7 @@ static void vfio_intx_update(VFIOPCIDevice *vdev, PCIINTxRoute *route) return; } - vfio_intx_enable_kvm(vdev, &err); - if (err) { + if (!vfio_intx_enable_kvm(vdev, &err)) { warn_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name); } @@ -302,8 +304,7 @@ static int vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp) return -errno; } - vfio_intx_enable_kvm(vdev, &err); - if (err) { + if (!vfio_intx_enable_kvm(vdev, &err)) { warn_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name); }