From 527701eda5f196588df9b36a30651804fea7d1a7 Mon Sep 17 00:00:00 2001 From: Palmer Dabbelt Date: Thu, 9 Jul 2020 11:43:21 -0700 Subject: lib: Add a generic version of devmem_is_allowed() As part of adding support for STRICT_DEVMEM to the RISC-V port, Zong provided a devmem_is_allowed() implementation that's exactly the same as all the others I checked. Instead I'm adding a generic version, which will soon be used. Reviewed-by: Luis Chamberlain Signed-off-by: Palmer Dabbelt --- include/asm-generic/io.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/asm-generic') diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index dabf8cb7203b..da2e861dee1c 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -1122,6 +1122,10 @@ static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer, } #endif +#ifndef CONFIG_GENERIC_DEVMEM_IS_ALLOWED +extern int devmem_is_allowed(unsigned long pfn); +#endif + #endif /* __KERNEL__ */ #endif /* __ASM_GENERIC_IO_H */ -- cgit v1.2.3