From patchwork Mon Jul 4 16:48:18 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael S. Tsirkin" X-Patchwork-Id: 9213029 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 12EFE60467 for ; Mon, 4 Jul 2016 17:22:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 01DCD28742 for ; Mon, 4 Jul 2016 17:22:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EB02D2874C; Mon, 4 Jul 2016 17:22:53 +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 6422F28742 for ; Mon, 4 Jul 2016 17:22:53 +0000 (UTC) Received: from localhost ([::1]:49395 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bK7a8-0004Au-GI for patchwork-qemu-devel@patchwork.kernel.org; Mon, 04 Jul 2016 13:22:52 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40428) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bK72n-0003cg-EE for qemu-devel@nongnu.org; Mon, 04 Jul 2016 12:48:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bK72l-0002nG-Er for qemu-devel@nongnu.org; Mon, 04 Jul 2016 12:48:24 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37878) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bK72l-0002nB-6k for qemu-devel@nongnu.org; Mon, 04 Jul 2016 12:48:23 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BCAF896AE; Mon, 4 Jul 2016 16:48:22 +0000 (UTC) Received: from redhat.com (vpn1-6-134.ams2.redhat.com [10.36.6.134]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with SMTP id u64GmJV3015772; Mon, 4 Jul 2016 12:48:20 -0400 Date: Mon, 4 Jul 2016 19:48:18 +0300 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Message-ID: <20160704194818-mutt-send-email-mst@redhat.com> References: <1467650742-17580-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1467650742-17580-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Mon, 04 Jul 2016 16:48:22 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 33/36] mptsas: remove unnecessary internal msi state flag 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 , Peter Maydell , Cao jin , Markus Armbruster , Paolo Bonzini Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Cao jin internal flag msi_in_use in unnecessary, msi_uninit() could be called directly, and msi_enabled() is enough to check device msi state. cc: Markus Armbruster cc: Marcel Apfelbaum cc: Paolo Bonzini cc: Michael S. Tsirkin Reviewed-by: Markus Armbruster Signed-off-by: Cao jin Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/scsi/mptsas.h | 2 -- hw/scsi/mptsas.c | 18 ++++++------------ 2 files changed, 6 insertions(+), 14 deletions(-) diff --git a/hw/scsi/mptsas.h b/hw/scsi/mptsas.h index 0436a33..da014a3 100644 --- a/hw/scsi/mptsas.h +++ b/hw/scsi/mptsas.h @@ -31,8 +31,6 @@ struct MPTSASState { OnOffAuto msi; uint64_t sas_addr; - bool msi_in_use; - /* Doorbell register */ uint32_t state; uint8_t who_init; diff --git a/hw/scsi/mptsas.c b/hw/scsi/mptsas.c index bb056c4..1ae32fb 100644 --- a/hw/scsi/mptsas.c +++ b/hw/scsi/mptsas.c @@ -63,7 +63,7 @@ static void mptsas_update_interrupt(MPTSASState *s) PCIDevice *pci = (PCIDevice *) s; uint32_t state = s->intr_status & ~(s->intr_mask | MPI_HIS_IOP_DOORBELL_STATUS); - if (s->msi_in_use && msi_enabled(pci)) { + if (msi_enabled(pci)) { if (state) { trace_mptsas_irq_msi(s); msi_notify(pci, 0); @@ -1289,15 +1289,12 @@ static void mptsas_scsi_init(PCIDevice *dev, Error **errp) error_append_hint(&err, "You have to use msi=auto (default) or " "msi=off with this machine type.\n"); error_propagate(errp, err); - s->msi_in_use = false; return; - } else if (ret) { - /* With msi=auto, we fall back to MSI off silently */ - error_free(err); - s->msi_in_use = false; - } else { - s->msi_in_use = true; } + assert(!err || s->msi == ON_OFF_AUTO_AUTO); + /* With msi=auto, we fall back to MSI off silently */ + error_free(err); + } memory_region_init_io(&s->mmio_io, OBJECT(s), &mptsas_mmio_ops, s, @@ -1337,9 +1334,7 @@ static void mptsas_scsi_uninit(PCIDevice *dev) MPTSASState *s = MPT_SAS(dev); qemu_bh_delete(s->request_bh); - if (s->msi_in_use) { - msi_uninit(dev); - } + msi_uninit(dev); } static void mptsas_reset(DeviceState *dev) @@ -1375,7 +1370,6 @@ static const VMStateDescription vmstate_mptsas = { .post_load = mptsas_post_load, .fields = (VMStateField[]) { VMSTATE_PCI_DEVICE(dev, MPTSASState), - VMSTATE_BOOL(msi_in_use, MPTSASState), VMSTATE_UINT32(state, MPTSASState), VMSTATE_UINT8(who_init, MPTSASState),