[PATCH] Consolidate check_signature

There's nothing arch-specific about check_signature(), so move it to
<linux/io.h>.  Use a cross between the Alpha and i386 implementations as
the generic one.

Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 26 deletions

diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index cbbd8c648df1..3baff8b0fd5a 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -404,32 +404,6 @@ static inline void __out_be64(volatile unsigned long __iomem *addr, unsigned lon
 
 #include <asm/eeh.h>
 
-/**
- *      check_signature         -       find BIOS signatures
- *      @io_addr: mmio address to check
- *      @signature:  signature block
- *      @length: length of signature
- *
- *      Perform a signature comparison with the mmio address io_addr. This
- *      address should have been obtained by ioremap.
- *      Returns 1 on a match.
- */
-static inline int check_signature(const volatile void __iomem * io_addr,
-        const unsigned char *signature, int length)
-{
-        int retval = 0;
-        do {
-                if (readb(io_addr) != *signature)
-                        goto out;
-                io_addr++;
-                signature++;
-                length--;
-        } while (length);
-        retval = 1;
-out:
-        return retval;
-}
-
 /* Nothing to do */
 
 #define dma_cache_inv(_start,_size)             do { } while (0)