Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Kefeng Wang <wangkefeng.wang@huawei.com>
To:     <catalin.marinas@arm.com>, <will@kernel.org>,
        <akpm@linux-foundation.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>
CC:     <linux-mm@kvack.org>, <hch@infradead.org>, <arnd@arndb.de>,
        Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: [PATCH v2 1/5] mm: ioremap: Use more sensibly name in ioremap_prot()
Date:   Fri, 29 Apr 2022 18:32:21 +0800
Message-ID: <20220429103225.75121-2-wangkefeng.wang@huawei.com>
In-Reply-To: <20220429103225.75121-1-wangkefeng.wang@huawei.com>
References: <20220429103225.75121-1-wangkefeng.wang@huawei.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7BIT
Content-Type:   text/plain; charset=US-ASCII
Precedence: bulk

Use more meaningful and sensibly naming phys_addr
instead addr in ioremap_prot().

Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
 include/asm-generic/io.h |  2 +-
 mm/ioremap.c             | 12 ++++++------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 7ce93aaf69f8..e6ffa2519f08 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -964,7 +964,7 @@ static inline void iounmap(volatile void __iomem *addr)
 #elif defined(CONFIG_GENERIC_IOREMAP)
 #include <linux/pgtable.h>
 
-void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long prot);
+void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size, unsigned long prot);
 void iounmap(volatile void __iomem *addr);
 
 static inline void __iomem *ioremap(phys_addr_t addr, size_t size)
diff --git a/mm/ioremap.c b/mm/ioremap.c
index 5fe598ecd9b7..1f9597fbcc07 100644
--- a/mm/ioremap.c
+++ b/mm/ioremap.c
@@ -11,20 +11,20 @@
 #include <linux/io.h>
 #include <linux/export.h>
 
-void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long prot)
+void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size, unsigned long prot)
 {
 	unsigned long offset, vaddr;
 	phys_addr_t last_addr;
 	struct vm_struct *area;
 
 	/* Disallow wrap-around or zero size */
-	last_addr = addr + size - 1;
-	if (!size || last_addr < addr)
+	last_addr = phys_addr + size - 1;
+	if (!size || last_addr < phys_addr)
 		return NULL;
 
 	/* Page-align mappings */
-	offset = addr & (~PAGE_MASK);
-	addr -= offset;
+	offset = phys_addr & (~PAGE_MASK);
+	phys_addr -= offset;
 	size = PAGE_ALIGN(size + offset);
 
 	area = get_vm_area_caller(size, VM_IOREMAP,
@@ -33,7 +33,7 @@ void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long prot)
 		return NULL;
 	vaddr = (unsigned long)area->addr;
 
-	if (ioremap_page_range(vaddr, vaddr + size, addr, __pgprot(prot))) {
+	if (ioremap_page_range(vaddr, vaddr + size, phys_addr, __pgprot(prot))) {
 		free_vm_area(area);
 		return NULL;
 	}
-- 
2.35.3