From: Baoquan He <bhe@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, akpm@linux-foundation.org, hch@infradead.org,
wangkefeng.wang@huawei.com, linux-arm-kernel@lists.infradead.org,
Baoquan He <bhe@redhat.com>
Subject: [PATCH 03/11] mm: ioremap: allow ARCH to have its own ioremap definition
Date: Mon, 1 Aug 2022 22:40:21 +0800 [thread overview]
Message-ID: <20220801144029.57829-4-bhe@redhat.com> (raw)
In-Reply-To: <20220801144029.57829-1-bhe@redhat.com>
Architectures like xtensa, arc, can be converted to GENERIC_IOREMAP,
to take standard ioremap_prot() and ioremap_xxx() way. But they have
ARCH specific handling for ioremap() method, then standard ioremap()
method.
In oder to convert them to take GENERIC_IOREMAP method, allow ARCH
to have its own ioremap definition.
This is a preparation patch, no functionality change.
Signed-off-by: Baoquan He <bhe@redhat.com>
---
include/asm-generic/io.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 0b5cd3cef99d..444761c3a44b 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -995,11 +995,14 @@ void __iomem *ioremap_prot(phys_addr_t paddr, size_t size,
unsigned long prot);
void iounmap(volatile void __iomem *addr);
+#ifndef ioremap
+#define ioremap ioremap
static inline void __iomem *ioremap(phys_addr_t addr, size_t size)
{
/* _PAGE_IOREMAP needs to be supplied by the architecture */
return ioremap_prot(addr, size, _PAGE_IOREMAP);
}
+#endif
#endif /* !CONFIG_MMU || CONFIG_GENERIC_IOREMAP */
#ifndef ioremap_wc
--
2.34.1
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next prev parent reply other threads:[~2022-08-01 14:42 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-01 14:40 [PATCH 00/11] mm: ioremap: Convert architectures to take GENERIC_IOREMAP way Baoquan He
2022-08-01 14:40 ` [PATCH 01/11] mm/ioremap: change the return value of io[re|un]map_allowed Baoquan He
2022-08-04 15:42 ` Alexander Gordeev
2022-08-06 2:29 ` Kefeng Wang
2022-08-06 8:29 ` Alexander Gordeev
2022-08-07 1:42 ` Baoquan He
2022-08-07 1:51 ` Baoquan He
2022-08-07 1:58 ` Baoquan He
2022-08-01 14:40 ` [PATCH 02/11] mm: ioremap: fixup the physical address Baoquan He
2022-08-04 16:02 ` Alexander Gordeev
2022-08-07 2:11 ` Baoquan He
2022-08-20 0:49 ` Baoquan He
2022-08-01 14:40 ` Baoquan He [this message]
2022-08-01 14:40 ` [PATCH 04/11] arc: mm: Convert to GENERIC_IOREMAP Baoquan He
2022-08-01 14:40 ` [PATCH 05/11] hexagon: " Baoquan He
2022-08-01 14:40 ` [PATCH 06/11] ia64: " Baoquan He
2022-08-01 14:40 ` [PATCH 07/11] openrisc: " Baoquan He
2022-08-01 14:40 ` [PATCH 08/11] parisc: " Baoquan He
2022-08-01 14:40 ` [PATCH 09/11] s390: " Baoquan He
2022-08-01 14:40 ` [PATCH 10/11] sh: " Baoquan He
2022-08-01 14:40 ` [PATCH 11/11] xtensa: " Baoquan He
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