[PATCH] m68k: M68k I/O for generic 8250 on HP300

M68k I/O updates from Kars de Jong and Jochen Friedrich:
  - To be able to use the generic 8250 driver on the HP300, added dummy
    implementations of inb(), inb_p(), outb() and outb_p()
  - Added implementations of readb(), writeb(), readl(), and writel() for the
    8250 driver
Signed-off-by: Kars de Jong <jongk@linux-m68k.org>
Signed-Off-By: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-m68k/io.h

@@ -327,6 +327,23 @@ static inline void *ioremap_fullcache(unsigned long physaddr,
 	return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
 }
 
+#if !defined(CONFIG_ISA) && !defined(CONFIG_PCI) && defined(CONFIG_HP300)
+/*
+ * We need to define dummy functions otherwise drivers/serial/8250.c doesn't link
+ */
+#define inb(port)        0xff
+#define inb_p(port)      0xff
+#define outb(val,port)   do { } while (0)
+#define outb_p(val,port) do { } while (0)
+
+/*
+ * These should be valid on any ioremap()ed region
+ */
+#define readb(addr)      in_8(addr)
+#define writeb(val,addr) out_8((addr),(val))
+#define readl(addr)      in_le32(addr)
+#define writel(val,addr) out_le32((addr),(val))
+#endif
 
 /* m68k caches aren't DMA coherent */
 extern void dma_cache_wback_inv(unsigned long start, unsigned long size);