From: Linus Walleij Date: Mon, 30 May 2022 08:46:39 +0000 (+0200) Subject: arm64: memory: Make virt_to_pfn() a static inline X-Git-Tag: v6.5-rc1~36^2~3^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c94b1a012f93327a4fe16ab9455331f37e69242f;p=thirdparty%2Fkernel%2Flinux.git arm64: memory: Make virt_to_pfn() a static inline Making virt_to_pfn() a static inline taking a strongly typed (const void *) makes the contract of a passing a pointer of that type to the function explicit and exposes any misuse of the macro virt_to_pfn() acting polymorphic and accepting many types such as (void *), (unitptr_t) or (unsigned long) as arguments without warnings. Since arm64 is using to provide __phys_to_pfn() we need to move the inclusion of that header up, so we can resolve the static inline at compile time. Acked-by: Catalin Marinas Signed-off-by: Linus Walleij --- diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index c735afdf639b1..4d85212b622ee 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -331,6 +331,14 @@ static inline void *phys_to_virt(phys_addr_t x) return (void *)(__phys_to_virt(x)); } +/* Needed already here for resolving __phys_to_pfn() in virt_to_pfn() */ +#include + +static inline unsigned long virt_to_pfn(const void *kaddr) +{ + return __phys_to_pfn(virt_to_phys(kaddr)); +} + /* * Drivers should NOT use these either. */ @@ -339,7 +347,6 @@ static inline void *phys_to_virt(phys_addr_t x) #define __pa_nodebug(x) __virt_to_phys_nodebug((unsigned long)(x)) #define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x))) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) -#define virt_to_pfn(x) __phys_to_pfn(__virt_to_phys((unsigned long)(x))) #define sym_to_pfn(x) __phys_to_pfn(__pa_symbol(x)) /*