From patchwork Thu Dec 10 14:28:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andre Przywara X-Patchwork-Id: 11966009 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C4E1EC4167B for ; Thu, 10 Dec 2020 19:28:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7FFFF22D74 for ; Thu, 10 Dec 2020 19:28:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727833AbgLJOaT (ORCPT ); Thu, 10 Dec 2020 09:30:19 -0500 Received: from foss.arm.com ([217.140.110.172]:44802 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390266AbgLJOaL (ORCPT ); Thu, 10 Dec 2020 09:30:11 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id DF9EA139F; Thu, 10 Dec 2020 06:29:25 -0800 (PST) Received: from donnerap.arm.com (donnerap.cambridge.arm.com [10.1.195.35]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C62683F718; Thu, 10 Dec 2020 06:29:24 -0800 (PST) From: Andre Przywara To: Will Deacon , Julien Thierry Cc: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, Alexandru Elisei , Marc Zyngier Subject: [PATCH kvmtool 03/21] ioport: Retire .generate_fdt_node functionality Date: Thu, 10 Dec 2020 14:28:50 +0000 Message-Id: <20201210142908.169597-4-andre.przywara@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201210142908.169597-1-andre.przywara@arm.com> References: <20201210142908.169597-1-andre.przywara@arm.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org The ioport routines support a special way of registering FDT node generator functions. There is no reason to have this separate from the already existing way via the device header. Now that the only user of this special ioport variety has been transferred, we can retire this code, to simplify ioport handling. Signed-off-by: Andre Przywara Reviewed-by: Alexandru Elisei --- include/kvm/ioport.h | 4 ---- ioport.c | 34 ---------------------------------- 2 files changed, 38 deletions(-) diff --git a/include/kvm/ioport.h b/include/kvm/ioport.h index d0213541..a61038e2 100644 --- a/include/kvm/ioport.h +++ b/include/kvm/ioport.h @@ -29,10 +29,6 @@ struct ioport { struct ioport_operations { bool (*io_in)(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size); bool (*io_out)(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size); - void (*generate_fdt_node)(struct ioport *ioport, void *fdt, - void (*generate_irq_prop)(void *fdt, - u8 irq, - enum irq_type)); }; void ioport__map_irq(u8 *irq); diff --git a/ioport.c b/ioport.c index 667e8386..b98836d3 100644 --- a/ioport.c +++ b/ioport.c @@ -56,7 +56,6 @@ static struct ioport *ioport_get(struct rb_root *root, u64 addr) /* Called with ioport_lock held. */ static void ioport_unregister(struct rb_root *root, struct ioport *data) { - device__unregister(&data->dev_hdr); ioport_remove(root, data); free(data); } @@ -70,30 +69,6 @@ static void ioport_put(struct rb_root *root, struct ioport *data) mutex_unlock(&ioport_lock); } -#ifdef CONFIG_HAS_LIBFDT -static void generate_ioport_fdt_node(void *fdt, - struct device_header *dev_hdr, - void (*generate_irq_prop)(void *fdt, - u8 irq, - enum irq_type)) -{ - struct ioport *ioport = container_of(dev_hdr, struct ioport, dev_hdr); - struct ioport_operations *ops = ioport->ops; - - if (ops->generate_fdt_node) - ops->generate_fdt_node(ioport, fdt, generate_irq_prop); -} -#else -static void generate_ioport_fdt_node(void *fdt, - struct device_header *dev_hdr, - void (*generate_irq_prop)(void *fdt, - u8 irq, - enum irq_type)) -{ - die("Unable to generate device tree nodes without libfdt\n"); -} -#endif - int ioport__register(struct kvm *kvm, u16 port, struct ioport_operations *ops, int count, void *param) { struct ioport *entry; @@ -107,10 +82,6 @@ int ioport__register(struct kvm *kvm, u16 port, struct ioport_operations *ops, i .node = RB_INT_INIT(port, port + count), .ops = ops, .priv = param, - .dev_hdr = (struct device_header) { - .bus_type = DEVICE_BUS_IOPORT, - .data = generate_ioport_fdt_node, - }, /* * Start from 0 because ioport__unregister() doesn't decrement * the reference count. @@ -123,15 +94,10 @@ int ioport__register(struct kvm *kvm, u16 port, struct ioport_operations *ops, i r = ioport_insert(&ioport_tree, entry); if (r < 0) goto out_free; - r = device__register(&entry->dev_hdr); - if (r < 0) - goto out_remove; mutex_unlock(&ioport_lock); return port; -out_remove: - ioport_remove(&ioport_tree, entry); out_free: free(entry); mutex_unlock(&ioport_lock);