Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753366AbdLNPur (ORCPT ); Thu, 14 Dec 2017 10:50:47 -0500 Received: from cmccmta2.chinamobile.com ([221.176.66.80]:19327 "EHLO cmccmta2.chinamobile.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753011AbdLNPuq (ORCPT ); Thu, 14 Dec 2017 10:50:46 -0500 X-RM-TRANSID: 2ee65a329dcf1e6-26f0e X-RM-TagInfo: emlType=0 X-RM-SPAM-FLAG: 00000000 X-RM-TRANSID: 2ee75a329dc83f4-76ec0 From: Yaowei Bai To: akpm@linux-foundation.org, rdunlap@infradead.org, rientjes@google.com, joe@perches.com Cc: linux-kernel@vger.kernel.org, baiyaowei@cmss.chinamobile.com Subject: [PATCH 4/7] kernel/resource: iomem_is_exclusive can be boolean Date: Thu, 14 Dec 2017 10:50:19 -0500 Message-Id: <1513266622-15860-5-git-send-email-baiyaowei@cmss.chinamobile.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1513266622-15860-1-git-send-email-baiyaowei@cmss.chinamobile.com> References: <1513266622-15860-1-git-send-email-baiyaowei@cmss.chinamobile.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1844 Lines: 64 This patch makes iomem_is_exclusive return bool due to this particular function only using either one or zero as its return value. No functional change. Signed-off-by: Yaowei Bai --- include/linux/ioport.h | 2 +- kernel/resource.c | 10 +++++----- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 93b4183..da0ebae 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -265,7 +265,7 @@ extern struct resource * __devm_request_region(struct device *dev, extern void __devm_release_region(struct device *dev, struct resource *parent, resource_size_t start, resource_size_t n); extern int iomem_map_sanity_check(resource_size_t addr, unsigned long size); -extern int iomem_is_exclusive(u64 addr); +extern bool iomem_is_exclusive(u64 addr); extern int walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages, diff --git a/kernel/resource.c b/kernel/resource.c index 54ba6de..a269b9a1 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -1563,17 +1563,17 @@ int iomem_map_sanity_check(resource_size_t addr, unsigned long size) /* * check if an address is reserved in the iomem resource tree - * returns 1 if reserved, 0 if not reserved. + * returns true if reserved, false if not reserved. */ -int iomem_is_exclusive(u64 addr) +bool iomem_is_exclusive(u64 addr) { struct resource *p = &iomem_resource; - int err = 0; + bool err = false; loff_t l; int size = PAGE_SIZE; if (!strict_iomem_checks) - return 0; + return false; addr = addr & PAGE_MASK; @@ -1596,7 +1596,7 @@ int iomem_is_exclusive(u64 addr) continue; if (IS_ENABLED(CONFIG_IO_STRICT_DEVMEM) || p->flags & IORESOURCE_EXCLUSIVE) { - err = 1; + err = true; break; } } -- 1.8.3.1