From patchwork Wed Feb 8 14:01:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 13133065 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 169FCC636CC for ; Wed, 8 Feb 2023 14:03:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231206AbjBHODJ (ORCPT ); Wed, 8 Feb 2023 09:03:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53112 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231230AbjBHODD (ORCPT ); Wed, 8 Feb 2023 09:03:03 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B5C3F172A for ; Wed, 8 Feb 2023 06:01:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1675864904; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=B/oxBv4GyMlmg4LCOb2+pqMxLhVHvEGbOFN4G7DG1xk=; b=NFK0afvHTCKyrWZxoGyk29jR9De2e1b9iV2egj1IlmH48P/qHXL6oVQF7+0WiEqmmC0pSJ Wc/a/AfPC4cq7YyIIUl0Y6mh+je++4gQAOI+fRLY3k8R56itSPC8xeZA3vYSit+AJ4WoHN UgzcSq1EtFvJqtsr4OgFsfip9/kPRl4= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-175-lS0izmB0OKqVYfkJTapWdw-1; Wed, 08 Feb 2023 09:01:39 -0500 X-MC-Unique: lS0izmB0OKqVYfkJTapWdw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 627871C08976; Wed, 8 Feb 2023 14:01:38 +0000 (UTC) Received: from thuth.com (unknown [10.39.193.64]) by smtp.corp.redhat.com (Postfix) with ESMTP id 976E8140EBF4; Wed, 8 Feb 2023 14:01:34 +0000 (UTC) From: Thomas Huth To: kvm@vger.kernel.org, Paolo Bonzini , Sean Christopherson Cc: kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, kvm-riscv@lists.infradead.org, Marc Zyngier , James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Christian Borntraeger , Janosch Frank , David Hildenbrand , Gavin Shan , Steven Price , Cornelia Huck Subject: [PATCH v2 5/6] KVM: Standardize on "int" return types instead of "long" in kvm_main.c Date: Wed, 8 Feb 2023 15:01:04 +0100 Message-Id: <20230208140105.655814-6-thuth@redhat.com> In-Reply-To: <20230208140105.655814-1-thuth@redhat.com> References: <20230208140105.655814-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org KVM functions use "long" return values for functions that are wired up to "struct file_operations", but otherwise use "int" return values for functions that can return 0/-errno in order to avoid unintentional divergences between 32-bit and 64-bit kernels. Some code still uses "long" in unnecessary spots, though, which can cause a little bit of confusion and unnecessary size casts. Let's change these spots to use "int" types, too. Signed-off-by: Thomas Huth --- virt/kvm/kvm_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 9c60384b5ae0..cd46467252a9 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -4475,7 +4475,7 @@ static int kvm_ioctl_create_device(struct kvm *kvm, return 0; } -static long kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg) +static int kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg) { switch (arg) { case KVM_CAP_USER_MEMORY: @@ -5053,7 +5053,7 @@ static int kvm_dev_ioctl_create_vm(unsigned long type) static long kvm_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { - long r = -EINVAL; + int r = -EINVAL; switch (ioctl) { case KVM_GET_API_VERSION: