[MIPS] PB1100: Fix pile of warnings

  CC      arch/mips/au1000/pb1100/board_setup.o
arch/mips/au1000/pb1100/board_setup.c: In function ‘board_setup’:
arch/mips/au1000/pb1100/board_setup.c:104: warning: passing argument 1 of ‘readb’ makes pointer from integer without a cast
arch/mips/au1000/pb1100/board_setup.c:105: warning: passing argument 1 of ‘readb’ makes pointer from integer without a cast
arch/mips/au1000/pb1100/board_setup.c:105: warning: passing argument 2 of ‘writeb’ makes pointer from integer without a cast
arch/mips/au1000/pb1100/board_setup.c:109: warning: passing argument 1 of ‘readb’ makes pointer from integer without a cast
arch/mips/au1000/pb1100/board_setup.c:110: warning: passing argument 1 of ‘readb’ makes pointer from integer without a cast
arch/mips/au1000/pb1100/board_setup.c:110: warning: passing argument 2 of ‘writeb’ makes pointer from integer without a cast
arch/mips/au1000/pb1100/board_setup.c:51: warning: unused variable ‘sys_clksrc’
arch/mips/au1000/pb1100/board_setup.c:51: warning: unused variable ‘sys_freqctrl’
arch/mips/au1000/pb1100/board_setup.c:50: warning: unused variable ‘pin_func’
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/au1000/pb1100/board_setup.c

@@ -47,8 +47,7 @@ void board_reset (void)
 
 void __init board_setup(void)
 {
-	u32 pin_func;
-	u32 sys_freqctrl, sys_clksrc;
+	volatile void __iomem * base = (volatile void __iomem *) 0xac000000UL;
 
 	// set AUX clock to 12MHz * 8 = 96 MHz
 	au_writel(8, SYS_AUXPLL);
@@ -56,6 +55,9 @@ void __init board_setup(void)
 	udelay(100);
 
 #ifdef CONFIG_USB_OHCI
+	{
+		u32 pin_func, sys_freqctrl, sys_clksrc;
+
 		// configure pins GPIO[14:9] as GPIO
 		pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x80);
 
@@ -95,19 +97,20 @@ void __init board_setup(void)
 		// 2nd USB port is USB host
 		pin_func |= 0x8000;
 		au_writel(pin_func, SYS_PINFUNC);
+	}
 #endif // defined (CONFIG_USB_OHCI)
 
 	/* Enable sys bus clock divider when IDLE state or no bus activity. */
 	au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);
 
 	// Enable the RTC if not already enabled
-	if (!(readb(0xac000028) & 0x20)) {
-		writeb(readb(0xac000028) | 0x20, 0xac000028);
+	if (!(readb(base + 0x28) & 0x20)) {
+		writeb(readb(base + 0x28) | 0x20, base + 0x28);
 		au_sync();
 	}
 	// Put the clock in BCD mode
-	if (readb(0xac00002C) & 0x4) { /* reg B */
-		writeb(readb(0xac00002c) & ~0x4, 0xac00002c);
+	if (readb(base + 0x2C) & 0x4) { /* reg B */
+		writeb(readb(base + 0x2c) & ~0x4, base + 0x2c);
 		au_sync();
 	}
 }