diff options
Diffstat (limited to 'include/asm-alpha/io.h')
| -rw-r--r-- | include/asm-alpha/io.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/asm-alpha/io.h b/include/asm-alpha/io.h index ddbdedfa2..3d2b51596 100644 --- a/include/asm-alpha/io.h +++ b/include/asm-alpha/io.h @@ -455,6 +455,23 @@ out: #define isa_memcpy_fromio(a,b,c) memcpy_fromio((a),__ioremap(b),(c)) #define isa_memcpy_toio(a,b,c) memcpy_toio(__ioremap(a),(b),(c)) +static inline int +isa_check_signature(unsigned long io_addr, const unsigned char *signature, + int length) +{ + int retval = 0; + do { + if (isa_readb(io_addr) != *signature) + goto out; + io_addr++; + signature++; + length--; + } while (length); + retval = 1; +out: + return retval; +} + /* * The Alpha Jensen hardware for some rather strange reason puts |