| Message ID | 1610729929-188490-3-git-send-email-john.garry@huawei.com (mailing list archive) |
|---|---|
| State | RFC |
| Headers | show |
| Series | Fix arm64 crash for accessing unmapped IO port regions (reboot) | expand |
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 9ea83d80eb6f..4d74a0c696ca 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -448,6 +448,10 @@ static inline void writesq(volatile void __iomem *addr, const void *buffer, #define IO_SPACE_LIMIT 0xffff #endif +#ifndef IO_SPACE_BASE +#define IO_SPACE_BASE 0x0 +#endif + /* * {in,out}{b,w,l}() access little endian I/O. {in,out}{b,w,l}_p() can be * implemented on hardware that needs an additional delay for I/O accesses to
Add a fallback default for IO_SPACE_BASE (at 0) for when an architecture does not define a value. Signed-off-by: John Garry <john.garry@huawei.com> --- include/asm-generic/io.h | 4 ++++ 1 file changed, 4 insertions(+)