[linuxdc-dev][PATCH] maple keyboard fix

[Robert L. <rm...@te...>]

In 2.4.15-pre7, the following change to include/asm-sh/string.h were
merged:

-#define __HAVE_ARCH_MEMSCAN
-#define memscan memchr

This was a Good Thing, since the two function are not specified to have
the same behavior.  memchr returns NULL on no match, and memscan returns
addr+1 if a match is not found.

The problem lies in that there is SH arch code that depended on the
false behavior of memscan -- that is, even though they called memscan,
they assumed it returned NULL on no match (since it was defined as
memchr which does just that).

At least one problem area was found: maple_keyb.c, and this was causing
my previously reported keyboard problem on my Dreamcast.

The attached patch fixes the problems.  There may be more.  _Please_
merge into CVS.

	Robert Love