diff options
| author | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-12-11 12:30:26 -0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-12-11 12:30:26 -0800 |
| commit | 7d95a88f9254b711a3a95106fc73f6a3a9866a40 (patch) | |
| tree | 9c4551d7f2dce744bbefc359b941fd144f66333d /include/asm-generic/io.h | |
| parent | 3ae9c3cde51abcb777125cfcf74cc402f4d0a4c7 (diff) | |
| parent | 6585bd827407f55ee30a782492208bfaf4f52feb (diff) | |
Add and use a generic version of devmem_is_allowed()
As part of adding STRICT_DEVMEM support to the RISC-V port, Zong provided an
implementation of devmem_is_allowed() that's exactly the same as the version in
a handful of other ports. Rather than duplicate code, I've put a generic
version of this in lib/ and used it for the RISC-V port.
* palmer/generic-devmem:
arm64: Use the generic devmem_is_allowed()
arm: Use the generic devmem_is_allowed()
RISC-V: Use the new generic devmem_is_allowed()
lib: Add a generic version of devmem_is_allowed()
Diffstat (limited to 'include/asm-generic/io.h')
| -rw-r--r-- | include/asm-generic/io.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 9ea83d80eb6f..c6af40ce03be 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -1137,6 +1137,10 @@ 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 */ |