PATCH 2.5.2.7: io.h cleanup and userspace nudge

[Jeff Garzik <jgarzik@mandrakesoft.com>]

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As we are now in 2.5.x series I figured it might be a good time to push
this out...  The patch removes __KERNEL__ ifdefs from [only] io.h as a
nudge to userspace that they should not be including kernel headers.

MDK, RedHat, Caldera, and other distros already distribute a subset of
[sanitized?] kernel headers for glibc, so there is plenty of time to
notice and deal with any breakage this causes in userspace [which IMHO
should not have been including kernel headers in the first place...]

Finally, the patch includes a cosmetic cleanup to use standard
u8/u16/u32 types for {read,write}[bwl], similar to patches already
applied for sparc64, alpha, and other arches during 2.4.x series.

	Jeff


-- 
Jeff Garzik      | Only so many songs can be sung
Building 1024    | with two lips, two lungs, and one tongue.
MandrakeSoft     |         - nomeansno

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--- /spare/tmp/linux-2.5.2-pre7/include/asm-i386/io.h	Sun Dec 16 18:43:31 2001
+++ linux_2_5/include/asm-i386/io.h	Fri Jan  4 12:32:07 2002
@@ -41,8 +41,6 @@
 #define XQUAD_PORTIO_BASE 0xfe400000
 #define XQUAD_PORTIO_LEN  0x40000   /* 256k per quad. Only remapping 1st */
 
-#ifdef __KERNEL__
-
 #include <linux/vmalloc.h>
 
 /*
@@ -108,16 +106,16 @@
  * memory location directly.
  */
 
-#define readb(addr) (*(volatile unsigned char *) __io_virt(addr))
-#define readw(addr) (*(volatile unsigned short *) __io_virt(addr))
-#define readl(addr) (*(volatile unsigned int *) __io_virt(addr))
+#define readb(addr) (*(volatile u8 *) __io_virt(addr))
+#define readw(addr) (*(volatile u16 *) __io_virt(addr))
+#define readl(addr) (*(volatile u32 *) __io_virt(addr))
 #define __raw_readb readb
 #define __raw_readw readw
 #define __raw_readl readl
 
-#define writeb(b,addr) (*(volatile unsigned char *) __io_virt(addr) = (b))
-#define writew(b,addr) (*(volatile unsigned short *) __io_virt(addr) = (b))
-#define writel(b,addr) (*(volatile unsigned int *) __io_virt(addr) = (b))
+#define writeb(b,addr) (*(volatile u8 *) __io_virt(addr) = (b))
+#define writew(b,addr) (*(volatile u16 *) __io_virt(addr) = (b))
+#define writel(b,addr) (*(volatile u32 *) __io_virt(addr) = (b))
 #define __raw_writeb writeb
 #define __raw_writew writew
 #define __raw_writel writel
@@ -215,8 +213,6 @@
 #define flush_write_buffers()
 
 #endif
-
-#endif /* __KERNEL__ */
 
 #ifdef SLOW_IO_BY_JUMPING
 #define __SLOW_DOWN_IO "\njmp 1f\n1:\tjmp 1f\n1:"