From patchwork Mon Mar 6 13:18:14 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 9606037 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 6868E601D2 for ; Mon, 6 Mar 2017 13:27:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5717628304 for ; Mon, 6 Mar 2017 13:27:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4C2B628415; Mon, 6 Mar 2017 13:27:34 +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 vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 10EB328304 for ; Mon, 6 Mar 2017 13:27:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753293AbdCFN1d (ORCPT ); Mon, 6 Mar 2017 08:27:33 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51862 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753133AbdCFN12 (ORCPT ); Mon, 6 Mar 2017 08:27:28 -0500 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 DC8893B71E for ; Mon, 6 Mar 2017 13:18:51 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-19.ams2.redhat.com [10.36.117.19]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v26DIHqu027978; Mon, 6 Mar 2017 08:18:50 -0500 From: David Hildenbrand To: kvm@vger.kernel.org Cc: Paolo Bonzini , rkrcmar@redhat.com, david@redhat.com Subject: [PATCH RFC 20/21] KVM: x86: set data directly in picdev_read() Date: Mon, 6 Mar 2017 14:18:14 +0100 Message-Id: <20170306131815.12033-21-david@redhat.com> In-Reply-To: <20170306131815.12033-1-david@redhat.com> References: <20170306131815.12033-1-david@redhat.com> 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 [10.5.110.30]); Mon, 06 Mar 2017 13:18:51 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Now it looks almost as picdev_write(). Signed-off-by: David Hildenbrand --- arch/x86/kvm/i8259.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c index 53c4c6a..52d21f2 100644 --- a/arch/x86/kvm/i8259.c +++ b/arch/x86/kvm/i8259.c @@ -484,7 +484,7 @@ static int picdev_write(struct kvm_pic *s, static int picdev_read(struct kvm_pic *s, gpa_t addr, int len, void *val) { - unsigned char data = 0; + unsigned char *data = (unsigned char *)val; if (len != 1) { memset(val, 0, len); @@ -497,19 +497,18 @@ static int picdev_read(struct kvm_pic *s, case 0xa0: case 0xa1: pic_lock(s); - data = pic_ioport_read(&s->pics[addr >> 7], addr); + *data = pic_ioport_read(&s->pics[addr >> 7], addr); pic_unlock(s); break; case 0x4d0: case 0x4d1: pic_lock(s); - data = elcr_ioport_read(&s->pics[addr & 1], addr); + *data = elcr_ioport_read(&s->pics[addr & 1], addr); pic_unlock(s); break; default: return -EOPNOTSUPP; } - *(unsigned char *)val = data; return 0; }