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| author |   Christoph Hellwig <hch@lst.de> | 2024-10-23 07:36:36 +0200 |
|---|---|---|
| committer |   Arnd Bergmann <arnd@arndb.de> | 2024-10-28 21:44:28 +0000 |
| commit | c5c3238d9b8cee58cd4b08bbbe9347a94a566390 (patch) | |
| tree | 3385a96ef2934aae9eb1c034bee9c3855727734a /arch/arc | |
| parent | asm-generic/io.h: Remove I/O port accessors for HAS_IOPORT=n (diff) | |
| download | linux-rng-c5c3238d9b8cee58cd4b08bbbe9347a94a566390.tar.xz linux-rng-c5c3238d9b8cee58cd4b08bbbe9347a94a566390.zip | |
asm-generic: provide generic page_to_phys and phys_to_page implementations
page_to_phys is duplicated by all architectures, and from some strange
reason placed in <asm/io.h> where it doesn't fit at all.
phys_to_page is only provided by a few architectures despite having a lot
of open coded users.
Provide generic versions in <asm-generic/memory_model.h> to make these
helpers more easily usable.
Note with this patch powerpc loses the CONFIG_DEBUG_VIRTUAL pfn_valid
check. It will be added back in a generic version later.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/include/asm/io.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h index f57cb5a6b624..00171a212b3c 100644 --- a/arch/arc/include/asm/io.h +++ b/arch/arc/include/asm/io.h @@ -42,9 +42,6 @@ static inline void ioport_unmap(void __iomem *addr) #define iowrite16be(v,p) ({ __iowmb(); __raw_writew((__force u16)cpu_to_be16(v), p); }) #define iowrite32be(v,p) ({ __iowmb(); __raw_writel((__force u32)cpu_to_be32(v), p); }) -/* Change struct page to physical address */ -#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) - #define __raw_readb __raw_readb static inline u8 __raw_readb(const volatile void __iomem *addr) { |