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>,
<anshuman.khandual@arm.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: [PATCH v5 2/6] mm: ioremap: Use more sensibly name in ioremap_prot()
Date: Tue, 7 Jun 2022 20:50:23 +0800 [thread overview]
Message-ID: <20220607125027.44946-3-wangkefeng.wang@huawei.com> (raw)
In-Reply-To: <20220607125027.44946-1-wangkefeng.wang@huawei.com>
Use more meaningful and sensibly naming phys_addr
instead addr in ioremap_prot().
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
include/asm-generic/io.h | 3 ++-
mm/ioremap.c | 14 ++++++++------
2 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 7ce93aaf69f8..b76379628a02 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -964,7 +964,8 @@ 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..2d754b48d230 100644
--- a/mm/ioremap.c
+++ b/mm/ioremap.c
@@ -11,20 +11,21 @@
#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 +34,8 @@ 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
next prev parent reply other threads:[~2022-06-07 12:41 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-07 12:50 [PATCH v5 0/6] arm64: Cleanup ioremap() and support ioremap_prot() Kefeng Wang
2022-06-07 12:50 ` [PATCH v5 1/6] ARM: mm: kill unused runtime hook arch_iounmap() Kefeng Wang
2022-06-07 15:40 ` Russell King (Oracle)
2022-06-14 5:47 ` kernel test robot
2022-06-14 6:12 ` Kefeng Wang
2022-06-07 12:50 ` Kefeng Wang [this message]
2022-06-08 4:16 ` [PATCH v5 2/6] mm: ioremap: Use more sensibly name in ioremap_prot() Baoquan He
2022-06-08 7:22 ` Baoquan He
2022-06-08 6:09 ` Christoph Hellwig
2022-06-08 7:04 ` Baoquan He
2022-06-10 9:22 ` [PATCH v5 resend 2/6] mm: ioremap: Use more sensible " Kefeng Wang
2022-06-07 12:50 ` [PATCH v5 3/6] mm: ioremap: Setup phys_addr of struct vm_struct Kefeng Wang
2022-06-07 12:50 ` [PATCH v5 4/6] mm: ioremap: Add ioremap/iounmap_allowed() Kefeng Wang
2022-06-08 4:18 ` Baoquan He
2022-06-08 6:10 ` Christoph Hellwig
2022-06-07 12:50 ` [PATCH v5 5/6] arm64: mm: Convert to GENERIC_IOREMAP Kefeng Wang
2022-06-07 12:50 ` [PATCH v5 6/6] arm64: Add HAVE_IOREMAP_PROT support Kefeng Wang
2022-06-14 3:21 ` [PATCH v5 0/6] arm64: Cleanup ioremap() and support ioremap_prot() Kefeng Wang
2022-06-27 11:06 ` Kefeng Wang
2022-06-27 11:14 ` Will Deacon
2022-06-27 11:19 ` Kefeng Wang
2022-06-27 13:00 ` Will Deacon
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