[PATCH 6.18 045/314] arm64: io: Rename ioremap_prot() to __ioremap_prot()

Sasha Levin
2026-03-10T11:25:21Z

From: Will Deacon <will@kernel.org>

[ Upstream commit f6bf47ab32e0863df50f5501d207dcdddb7fc507 ]

Rename our ioremap_prot() implementation to __ioremap_prot() and convert
all arch-internal callers over to the new function.

ioremap_prot() remains as a #define to __ioremap_prot() for
generic_access_phys() and will be subsequently extended to handle user
permissions in 'prot'.

Cc: Zeng Heng <zengheng4@huawei.com>
Cc: Jinjiang Tu <tujinjiang@huawei.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Stable-dep-of: 8f098037139b ("arm64: io: Extract user memory type in ioremap_prot()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm64/include/asm/io.h | 11 ++++++-----
arch/arm64/kernel/acpi.c | 2 +-
arch/arm64/mm/ioremap.c | 6 +++---
3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 83e03abbb2ca9..cd2fddfe814ac 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -264,19 +264,20 @@ __iowrite64_copy(void __iomem *to, const void *from, size_t count)
typedef int (*ioremap_prot_hook_t)(phys_addr_t phys_addr, size_t size,
pgprot_t *prot);
int arm64_ioremap_prot_hook_register(const ioremap_prot_hook_t hook);
+void __iomem *__ioremap_prot(phys_addr_t phys, size_t size, pgprot_t prot);

-#define ioremap_prot ioremap_prot
+#define ioremap_prot __ioremap_prot

#define _PAGE_IOREMAP PROT_DEVICE_nGnRE

#define ioremap_wc(addr, size) \
- ioremap_prot((addr), (size), __pgprot(PROT_NORMAL_NC))
+ __ioremap_prot((addr), (size), __pgprot(PROT_NORMAL_NC))
#define ioremap_np(addr, size) \
- ioremap_prot((addr), (size), __pgprot(PROT_DEVICE_nGnRnE))
+ __ioremap_prot((addr), (size), __pgprot(PROT_DEVICE_nGnRnE))

#define ioremap_encrypted(addr, size) \
- ioremap_prot((addr), (size), PAGE_KERNEL)
+ __ioremap_prot((addr), (size), PAGE_KERNEL)

/*
* io{read,write}{16,32,64}be() macros
@@ -297,7 +298,7 @@ static inline void __iomem *ioremap_cache(phys_addr_t addr, size_t size)
if (pfn_is_map_memory(__phys_to_pfn(addr)))
return (void __iomem *)__phys_to_virt(addr);

- return ioremap_prot(addr, size, __pgprot(PROT_NORMAL));
+ return __ioremap_prot(addr, size, __pgprot(PROT_NORMAL));
}

/*
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index f1cb2447afc9c..b285e174f4f51 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -377,7 +377,7 @@ void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
prot = __acpi_get_writethrough_mem_attribute();
}
}
- return ioremap_prot(phys, size, prot);
+ return __ioremap_prot(phys, size, prot);
}

/*
diff --git a/arch/arm64/mm/ioremap.c b/arch/arm64/mm/ioremap.c
index 10e246f112710..1e4794a2af7d6 100644
--- a/arch/arm64/mm/ioremap.c
+++ b/arch/arm64/mm/ioremap.c
@@ -14,8 +14,8 @@ int arm64_ioremap_prot_hook_register(ioremap_prot_hook_t hook)
return 0;
}

-void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size,
- pgprot_t pgprot)
+void __iomem *__ioremap_prot(phys_addr_t phys_addr, size_t size,
+ pgprot_t pgprot)
{
unsigned long last_addr = phys_addr + size - 1;

@@ -38,7 +38,7 @@ void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size,

return generic_ioremap_prot(phys_addr, size, pgprot);
}
-EXPORT_SYMBOL(ioremap_prot);
+EXPORT_SYMBOL(__ioremap_prot);

/*
* Must be called after early_fixmap_init
--
2.51.0