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a="23994145" X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="23994145" 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" 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 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1716353030722100007 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: C=C3=A9dric 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); } =20 -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 =3D event_notifier_get_fd(&vdev->intx.interrupt); @@ -124,7 +124,7 @@ static void vfio_intx_enable_kvm(VFIOPCIDevice *vdev, E= rror **errp) if (vdev->no_kvm_intx || !kvm_irqfds_enabled() || vdev->intx.route.mode !=3D PCI_INTX_ENABLED || !kvm_resamplefds_enabled()) { - return; + return true; } =20 /* Get to a known interrupt state */ @@ -161,7 +161,7 @@ static void vfio_intx_enable_kvm(VFIOPCIDevice *vdev, E= rror **errp) =20 trace_vfio_intx_enable_kvm(vdev->vbasedev.name); =20 - return; + return true; =20 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 } =20 @@ -226,8 +229,7 @@ static void vfio_intx_update(VFIOPCIDevice *vdev, PCIIN= TxRoute *route) return; } =20 - 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); } =20 @@ -302,8 +304,7 @@ static int vfio_intx_enable(VFIOPCIDevice *vdev, Error = **errp) return -errno; } =20 - 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); } =20 --=20 2.34.1