Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Au1200: MMC resource size off by one
  [MIPS] TANBAC: Update defconfig
  [MIPS] Vr41xx: Initialize PCI io_map_base
  [MIPS] Malta: Always compile MTD platform device registration code.
  [MIPS] Malta: Fix build errors for 64-bit kernels
  [MIPS] Lasat: sysctl fixup
  [MIPS] Fix buggy use of kmap_coherent.
  [MIPS] Lasat: bring back from the dead
  [MIPS] vpe_id is required for VSMP and SMTC builds
  [MIPS] Export smp_call_function and smp_call_function_single.
  [MIPS] Bring the SWARM defconfig up to date
  [MIPS] Sibyte: Build RTC support as an object
  [MIPS] Fix the fix for divide by zero error in build_{clear,copy}_page
  [MIPS] Fix build for PNX platforms.
  [MIPS] Add RM200 with R5000 CPU to known ARC machines
  [MIPS] Better load address for big endian SNI RM
  [MIPS] SB1250: Initialize io_map_base
  [MIPS] Alchemy: Add au1500 reserved interrupt
  [MIPS] Export empty_zero_page for sake of the ext4 module.

arch/mips/Makefile

@@ -538,19 +538,19 @@ cflags-$(CONFIG_SIBYTE_BCM1x80)	+= -Iinclude/asm-mips/mach-sibyte \
 # Sibyte SWARM board
 # Sibyte BCM91x80 (BigSur) board
 #
-libs-$(CONFIG_SIBYTE_CARMEL)	+= arch/mips/sibyte/swarm/
+core-$(CONFIG_SIBYTE_CARMEL)	+= arch/mips/sibyte/swarm/
 load-$(CONFIG_SIBYTE_CARMEL)	:= 0xffffffff80100000
-libs-$(CONFIG_SIBYTE_CRHINE)	+= arch/mips/sibyte/swarm/
+core-$(CONFIG_SIBYTE_CRHINE)	+= arch/mips/sibyte/swarm/
 load-$(CONFIG_SIBYTE_CRHINE)	:= 0xffffffff80100000
-libs-$(CONFIG_SIBYTE_CRHONE)	+= arch/mips/sibyte/swarm/
+core-$(CONFIG_SIBYTE_CRHONE)	+= arch/mips/sibyte/swarm/
 load-$(CONFIG_SIBYTE_CRHONE)	:= 0xffffffff80100000
-libs-$(CONFIG_SIBYTE_RHONE)	+= arch/mips/sibyte/swarm/
+core-$(CONFIG_SIBYTE_RHONE)	+= arch/mips/sibyte/swarm/
 load-$(CONFIG_SIBYTE_RHONE)	:= 0xffffffff80100000
-libs-$(CONFIG_SIBYTE_SENTOSA)	+= arch/mips/sibyte/swarm/
+core-$(CONFIG_SIBYTE_SENTOSA)	+= arch/mips/sibyte/swarm/
 load-$(CONFIG_SIBYTE_SENTOSA)	:= 0xffffffff80100000
-libs-$(CONFIG_SIBYTE_SWARM)	+= arch/mips/sibyte/swarm/
+core-$(CONFIG_SIBYTE_SWARM)	+= arch/mips/sibyte/swarm/
 load-$(CONFIG_SIBYTE_SWARM)	:= 0xffffffff80100000
-libs-$(CONFIG_SIBYTE_BIGSUR)	+= arch/mips/sibyte/swarm/
+core-$(CONFIG_SIBYTE_BIGSUR)	+= arch/mips/sibyte/swarm/
 load-$(CONFIG_SIBYTE_BIGSUR)	:= 0xffffffff80100000
 
 #
@@ -565,7 +565,11 @@ load-$(CONFIG_BCM47XX)		:= 0xffffffff80001000
 #
 core-$(CONFIG_SNI_RM)		+= arch/mips/sni/
 cflags-$(CONFIG_SNI_RM)		+= -Iinclude/asm-mips/mach-rm
+ifdef CONFIG_CPU_LITTLE_ENDIAN
 load-$(CONFIG_SNI_RM)		+= 0xffffffff80600000
+else
+load-$(CONFIG_SNI_RM)		+= 0xffffffff80030000
+endif
 all-$(CONFIG_SNI_RM)		:= vmlinux.ecoff
 
 #

arch/mips/au1000/common/platform.c

@@ -165,12 +165,12 @@ static struct resource au1xxx_usb_gdt_resources[] = {
 static struct resource au1xxx_mmc_resources[] = {
 	[0] = {
 		.start          = SD0_PHYS_ADDR,
-		.end            = SD0_PHYS_ADDR + 0x40,
+		.end            = SD0_PHYS_ADDR + 0x7ffff,
 		.flags          = IORESOURCE_MEM,
 	},
 	[1] = {
 		.start		= SD1_PHYS_ADDR,
-		.end 		= SD1_PHYS_ADDR + 0x40,
+		.end 		= SD1_PHYS_ADDR + 0x7ffff,
 		.flags		= IORESOURCE_MEM,
 	},
 	[2] = {

arch/mips/fw/arc/identify.c

@@ -67,6 +67,11 @@ static struct smatch mach_table[] = {
 		.liname		= "SNI RM200_PCI",
 		.type		= MACH_SNI_RM200_PCI,
 		.flags		= PROM_FLAG_DONT_FREE_TEMP,
+	}, {
+		.arcname	= "RM200PCI-R5K",
+		.liname		= "SNI RM200_PCI-R5K",
+		.type		= MACH_SNI_RM200_PCI,
+		.flags		= PROM_FLAG_DONT_FREE_TEMP,
 	}
 };
 

arch/mips/kernel/smp.c

@@ -216,6 +216,7 @@ int smp_call_function(void (*func) (void *info), void *info, int retry,
 {
 	return smp_call_function_mask(cpu_online_map, func, info, retry, wait);
 }
+EXPORT_SYMBOL(smp_call_function);
 
 void smp_call_function_interrupt(void)
 {
@@ -271,6 +272,7 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
 	put_cpu();
 	return 0;
 }
+EXPORT_SYMBOL(smp_call_function_single);
 
 static void stop_this_cpu(void *dummy)
 {

arch/mips/lasat/interrupt.c

@@ -34,11 +34,13 @@ static volatile int lasat_int_mask_shift;
 
 void disable_lasat_irq(unsigned int irq_nr)
 {
+	irq_nr -= LASAT_IRQ_BASE;
 	*lasat_int_mask &= ~(1 << irq_nr) << lasat_int_mask_shift;
 }
 
 void enable_lasat_irq(unsigned int irq_nr)
 {
+	irq_nr -= LASAT_IRQ_BASE;
 	*lasat_int_mask |= (1 << irq_nr) << lasat_int_mask_shift;
 }
 

arch/mips/lasat/lasat_board.c

@@ -23,18 +23,19 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/ctype.h>
+#include <linux/mutex.h>
 #include <asm/bootinfo.h>
 #include <asm/addrspace.h>
 #include "at93c.h"
 /* New model description table */
 #include "lasat_models.h"
 
+static DEFINE_MUTEX(lasat_eeprom_mutex);
+
 #define EEPROM_CRC(data, len) (~crc32(~0, data, len))
 
 struct lasat_info lasat_board_info;
 
-void update_bcastaddr(void);
-
 int EEPROMRead(unsigned int pos, unsigned char *data, int len)
 {
 	int i;
@@ -258,10 +259,6 @@ int lasat_init_board_info(void)
 			sprintf(lasat_board_info.li_typestr, "%d", 10 * c);
 	}
 
-#if defined(CONFIG_INET) && defined(CONFIG_SYSCTL)
-	update_bcastaddr();
-#endif
-
 	return 0;
 }
 
@@ -269,6 +266,8 @@ void lasat_write_eeprom_info(void)
 {
 	unsigned long crc;
 
+	mutex_lock(&lasat_eeprom_mutex);
+
 	/* Generate the CRC */
 	crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info),
 		    sizeof(struct lasat_eeprom_struct) - 4);
@@ -277,4 +276,6 @@ void lasat_write_eeprom_info(void)
 	/* Write the EEPROM info */
 	EEPROMWrite(0, (unsigned char *)&lasat_board_info.li_eeprom_info,
 		    sizeof(struct lasat_eeprom_struct));
+
+	mutex_unlock(&lasat_eeprom_mutex);
 }

arch/mips/lasat/sysctl.c

@@ -29,15 +29,13 @@
 #include <linux/string.h>
 #include <linux/net.h>
 #include <linux/inet.h>
-#include <linux/mutex.h>
 #include <linux/uaccess.h>
 
 #include <asm/time.h>
 
-#include "sysctl.h"
+#ifdef CONFIG_DS1603
 #include "ds1603.h"
-
-static DEFINE_MUTEX(lasat_info_mutex);
+#endif
 
 /* Strategy function to write EEPROM after changing string entry */
 int sysctl_lasatstring(ctl_table *table, int *name, int nlen,
@@ -46,18 +44,15 @@ int sysctl_lasatstring(ctl_table *table, int *name, int nlen,
 {
 	int r;
 
-	mutex_lock(&lasat_info_mutex);
 	r = sysctl_string(table, name,
 			  nlen, oldval, oldlenp, newval, newlen);
-	if (r < 0) {
-		mutex_unlock(&lasat_info_mutex);
+	if (r < 0)
 		return r;
-	}
+
 	if (newval && newlen)
 		lasat_write_eeprom_info();
-	mutex_unlock(&lasat_info_mutex);
 
-	return 1;
+	return 0;
 }
 
 
@@ -67,14 +62,11 @@ int proc_dolasatstring(ctl_table *table, int write, struct file *filp,
 {
 	int r;
 
-	mutex_lock(&lasat_info_mutex);
 	r = proc_dostring(table, write, filp, buffer, lenp, ppos);
-	if ((!write) || r) {
-		mutex_unlock(&lasat_info_mutex);
+	if ((!write) || r)
 		return r;
-	}
+
 	lasat_write_eeprom_info();
-	mutex_unlock(&lasat_info_mutex);
 
 	return 0;
 }
@@ -85,28 +77,24 @@ int proc_dolasatint(ctl_table *table, int write, struct file *filp,
 {
 	int r;
 
-	mutex_lock(&lasat_info_mutex);
 	r = proc_dointvec(table, write, filp, buffer, lenp, ppos);
-	if ((!write) || r) {
-		mutex_unlock(&lasat_info_mutex);
+	if ((!write) || r)
 		return r;
-	}
+
 	lasat_write_eeprom_info();
-	mutex_unlock(&lasat_info_mutex);
 
 	return 0;
 }
 
+#ifdef CONFIG_DS1603
 static int rtctmp;
 
-#ifdef CONFIG_DS1603
 /* proc function to read/write RealTime Clock */
 int proc_dolasatrtc(ctl_table *table, int write, struct file *filp,
 		       void *buffer, size_t *lenp, loff_t *ppos)
 {
 	int r;
 
-	mutex_lock(&lasat_info_mutex);
 	if (!write) {
 		rtctmp = read_persistent_clock();
 		/* check for time < 0 and set to 0 */
@@ -114,12 +102,11 @@ int proc_dolasatrtc(ctl_table *table, int write, struct file *filp,
 			rtctmp = 0;
 	}
 	r = proc_dointvec(table, write, filp, buffer, lenp, ppos);
-	if ((!write) || r) {
-		mutex_unlock(&lasat_info_mutex);
+	if (r)
 		return r;
-	}
-	rtc_mips_set_mmss(rtctmp);
-	mutex_unlock(&lasat_info_mutex);
+
+	if (write)
+		rtc_mips_set_mmss(rtctmp);
 
 	return 0;
 }
@@ -132,17 +119,14 @@ int sysctl_lasat_intvec(ctl_table *table, int *name, int nlen,
 {
 	int r;
 
-	mutex_lock(&lasat_info_mutex);
 	r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
-	if (r < 0) {
-		mutex_unlock(&lasat_info_mutex);
+	if (r < 0)
 		return r;
-	}
+
 	if (newval && newlen)
 		lasat_write_eeprom_info();
-	mutex_unlock(&lasat_info_mutex);
 
-	return 1;
+	return 0;
 }
 
 #ifdef CONFIG_DS1603
@@ -153,50 +137,27 @@ int sysctl_lasat_rtc(ctl_table *table, int *name, int nlen,
 {
 	int r;
 
-	mutex_lock(&lasat_info_mutex);
 	rtctmp = read_persistent_clock();
 	if (rtctmp < 0)
 		rtctmp = 0;
 	r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
-	if (r < 0) {
-		mutex_unlock(&lasat_info_mutex);
+	if (r < 0)
 		return r;
-	}
 	if (newval && newlen)
 		rtc_mips_set_mmss(rtctmp);
-	mutex_unlock(&lasat_info_mutex);
 
-	return 1;
+	return r;
 }
 #endif
 
 #ifdef CONFIG_INET
-static char lasat_bcastaddr[16];
-
-void update_bcastaddr(void)
-{
-	unsigned int ip;
-
-	ip = (lasat_board_info.li_eeprom_info.ipaddr &
-		lasat_board_info.li_eeprom_info.netmask) |
-		~lasat_board_info.li_eeprom_info.netmask;
-
-	sprintf(lasat_bcastaddr, "%d.%d.%d.%d",
-			(ip)       & 0xff,
-			(ip >>  8) & 0xff,
-			(ip >> 16) & 0xff,
-			(ip >> 24) & 0xff);
-}
-
-static char proc_lasat_ipbuf[32];
-
-/* Parsing of IP address */
 int proc_lasat_ip(ctl_table *table, int write, struct file *filp,
 		       void *buffer, size_t *lenp, loff_t *ppos)
 {
 	unsigned int ip;
 	char *p, c;
 	int len;
+	char ipbuf[32];
 
 	if (!table->data || !table->maxlen || !*lenp ||
 	    (*ppos && !write)) {
@@ -204,117 +165,88 @@ int proc_lasat_ip(ctl_table *table, int write, struct file *filp,
 		return 0;
 	}
 
-	mutex_lock(&lasat_info_mutex);
 	if (write) {
 		len = 0;
 		p = buffer;
 		while (len < *lenp) {
-			if (get_user(c, p++)) {
-				mutex_unlock(&lasat_info_mutex);
+			if (get_user(c, p++))
 				return -EFAULT;
-			}
 			if (c == 0 || c == '\n')
 				break;
 			len++;
 		}
-		if (len >= sizeof(proc_lasat_ipbuf)-1)
-			len = sizeof(proc_lasat_ipbuf) - 1;
-		if (copy_from_user(proc_lasat_ipbuf, buffer, len)) {
-			mutex_unlock(&lasat_info_mutex);
+		if (len >= sizeof(ipbuf)-1)
+			len = sizeof(ipbuf) - 1;
+		if (copy_from_user(ipbuf, buffer, len))
 			return -EFAULT;
-		}
-		proc_lasat_ipbuf[len] = 0;
+		ipbuf[len] = 0;
 		*ppos += *lenp;
 		/* Now see if we can convert it to a valid IP */
-		ip = in_aton(proc_lasat_ipbuf);
+		ip = in_aton(ipbuf);
 		*(unsigned int *)(table->data) = ip;
 		lasat_write_eeprom_info();
 	} else {
 		ip = *(unsigned int *)(table->data);
-		sprintf(proc_lasat_ipbuf, "%d.%d.%d.%d",
+		sprintf(ipbuf, "%d.%d.%d.%d",
 			(ip)       & 0xff,
 			(ip >>  8) & 0xff,
 			(ip >> 16) & 0xff,
 			(ip >> 24) & 0xff);
-		len = strlen(proc_lasat_ipbuf);
+		len = strlen(ipbuf);
 		if (len > *lenp)
 			len = *lenp;
 		if (len)
-			if (copy_to_user(buffer, proc_lasat_ipbuf, len)) {
-				mutex_unlock(&lasat_info_mutex);
+			if (copy_to_user(buffer, ipbuf, len))
 				return -EFAULT;
-			}
 		if (len < *lenp) {
-			if (put_user('\n', ((char *) buffer) + len)) {
-				mutex_unlock(&lasat_info_mutex);
+			if (put_user('\n', ((char *) buffer) + len))
 				return -EFAULT;
-			}
 			len++;
 		}
 		*lenp = len;
 		*ppos += len;
 	}
-	update_bcastaddr();
-	mutex_unlock(&lasat_info_mutex);
 
 	return 0;
 }
-#endif /* defined(CONFIG_INET) */
+#endif
 
-static int sysctl_lasat_eeprom_value(ctl_table *table, int *name, int nlen,
+static int sysctl_lasat_prid(ctl_table *table, int *name, int nlen,
 				     void *oldval, size_t *oldlenp,
 				     void *newval, size_t newlen)
 {
 	int r;
 
-	mutex_lock(&lasat_info_mutex);
 	r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
-	if (r < 0) {
-		mutex_unlock(&lasat_info_mutex);
+	if (r < 0)
 		return r;
-	}
-
 	if (newval && newlen) {
-		if (name && *name == LASAT_PRID)
-			lasat_board_info.li_eeprom_info.prid = *(int *)newval;
-
+		lasat_board_info.li_eeprom_info.prid = *(int *)newval;
 		lasat_write_eeprom_info();
 		lasat_init_board_info();
 	}
-	mutex_unlock(&lasat_info_mutex);
-
 	return 0;
 }
 
-int proc_lasat_eeprom_value(ctl_table *table, int write, struct file *filp,
+int proc_lasat_prid(ctl_table *table, int write, struct file *filp,
 		       void *buffer, size_t *lenp, loff_t *ppos)
 {
 	int r;
 
-	mutex_lock(&lasat_info_mutex);
 	r = proc_dointvec(table, write, filp, buffer, lenp, ppos);
-	if ((!write) || r) {
-		mutex_unlock(&lasat_info_mutex);
+	if (r < 0)
 		return r;
+	if (write) {
+		lasat_board_info.li_eeprom_info.prid =
+			lasat_board_info.li_prid;
+		lasat_write_eeprom_info();
+		lasat_init_board_info();
 	}
-	if (filp && filp->f_path.dentry) {
-		if (!strcmp(filp->f_path.dentry->d_name.name, "prid"))
-			lasat_board_info.li_eeprom_info.prid =
-				lasat_board_info.li_prid;
-		if (!strcmp(filp->f_path.dentry->d_name.name, "debugaccess"))
-			lasat_board_info.li_eeprom_info.debugaccess =
-				lasat_board_info.li_debugaccess;
-	}
-	lasat_write_eeprom_info();
-	mutex_unlock(&lasat_info_mutex);
-
 	return 0;
 }
 
 extern int lasat_boot_to_service;
 
-#ifdef CONFIG_SYSCTL
-
 static ctl_table lasat_table[] = {
 	{
 		.ctl_name	= CTL_UNNUMBERED,
@@ -349,8 +281,8 @@ static ctl_table lasat_table[] = {
 		.data		= &lasat_board_info.li_prid,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
-		.proc_handler	= &proc_lasat_eeprom_value,
-		.strategy	= &sysctl_lasat_eeprom_value
+		.proc_handler	= &proc_lasat_prid,
+		.strategy	= &sysctl_lasat_prid
 	},
 #ifdef CONFIG_INET
 	{
@@ -363,7 +295,7 @@ static ctl_table lasat_table[] = {
 		.strategy	= &sysctl_lasat_intvec
 	},
 	{
-		.ctl_name	= LASAT_NETMASK,
+		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "netmask",
 		.data		= &lasat_board_info.li_eeprom_info.netmask,
 		.maxlen		= sizeof(int),
@@ -371,15 +303,6 @@ static ctl_table lasat_table[] = {
 		.proc_handler	= &proc_lasat_ip,
 		.strategy	= &sysctl_lasat_intvec
 	},
-	{
-		.ctl_name	= CTL_UNNUMBERED,
-		.procname	= "bcastaddr",
-		.data		= &lasat_bcastaddr,
-		.maxlen		= sizeof(lasat_bcastaddr),
-		.mode		= 0600,
-		.proc_handler	= &proc_dostring,
-		.strategy	= &sysctl_string
-	},
 #endif
 	{
 		.ctl_name	= CTL_UNNUMBERED,
@@ -417,7 +340,7 @@ static ctl_table lasat_table[] = {
 		.data		= &lasat_board_info.li_namestr,
 		.maxlen		= sizeof(lasat_board_info.li_namestr),
 		.mode		= 0444,
-		.proc_handler	=  &proc_dostring,
+		.proc_handler	= &proc_dostring,
 		.strategy	= &sysctl_string
 	},
 	{
@@ -448,9 +371,12 @@ static int __init lasat_register_sysctl(void)
 
 	lasat_table_header =
 		register_sysctl_table(lasat_root_table);
+	if (!lasat_table_header) {
+		printk(KERN_ERR "Unable to register LASAT sysctl\n");
+		return -ENOMEM;
+	}
 
 	return 0;
 }
 
 __initcall(lasat_register_sysctl);
-#endif /* CONFIG_SYSCTL */

arch/mips/lasat/sysctl.h

@@ -1,24 +0,0 @@
-/*
- * LASAT sysctl values
- */
-
-#ifndef _LASAT_SYSCTL_H
-#define _LASAT_SYSCTL_H
-
-/* /proc/sys/lasat */
-enum {
-	LASAT_CPU_HZ = 1,
-	LASAT_BUS_HZ,
-	LASAT_MODEL,
-	LASAT_PRID,
-	LASAT_IPADDR,
-	LASAT_NETMASK,
-	LASAT_BCAST,
-	LASAT_PASSWORD,
-	LASAT_SBOOT,
-	LASAT_RTC,
-	LASAT_NAMESTR,
-	LASAT_TYPESTR,
-};
-
-#endif /* _LASAT_SYSCTL_H */

arch/mips/mips-boards/generic/amon.c

@@ -28,7 +28,7 @@
 
 int amon_cpu_avail(int cpu)
 {
-	struct cpulaunch *launch = (struct cpulaunch *)KSEG0ADDR(CPULAUNCH);
+	struct cpulaunch *launch = (struct cpulaunch *)CKSEG0ADDR(CPULAUNCH);
 
 	if (cpu < 0 || cpu >= NCPULAUNCH) {
 		pr_debug("avail: cpu%d is out of range\n", cpu);
@@ -53,7 +53,7 @@ void amon_cpu_start(int cpu,
 		    unsigned long gp, unsigned long a0)
 {
 	volatile struct cpulaunch *launch =
-		(struct cpulaunch  *)KSEG0ADDR(CPULAUNCH);
+		(struct cpulaunch  *)CKSEG0ADDR(CPULAUNCH);
 
 	if (!amon_cpu_avail(cpu))
 		return;

arch/mips/mips-boards/malta/Makefile

@@ -19,9 +19,8 @@
 # under Linux.
 #
 
-obj-y := malta_int.o malta_platform.o malta_setup.o
+obj-y := malta_int.o malta_mtd.o malta_platform.o malta_setup.o
 
-obj-$(CONFIG_MTD) += malta_mtd.o
 # FIXME FIXME FIXME
 obj-$(CONFIG_MIPS_MT_SMTC) += malta_smtc.o
 

arch/mips/mm/c-r4k.c

@@ -446,6 +446,7 @@ static inline void local_r4k_flush_cache_page(void *args)
 	struct page *page = pfn_to_page(fcp_args->pfn);
 	int exec = vma->vm_flags & VM_EXEC;
 	struct mm_struct *mm = vma->vm_mm;
+	int map_coherent = 0;
 	pgd_t *pgdp;
 	pud_t *pudp;
 	pmd_t *pmdp;
@@ -479,7 +480,9 @@ static inline void local_r4k_flush_cache_page(void *args)
 		 * Use kmap_coherent or kmap_atomic to do flushes for
 		 * another ASID than the current one.
 		 */
-		if (cpu_has_dc_aliases)
+		map_coherent = (cpu_has_dc_aliases &&
+				page_mapped(page) && !Page_dcache_dirty(page));
+		if (map_coherent)
 			vaddr = kmap_coherent(page, addr);
 		else
 			vaddr = kmap_atomic(page, KM_USER0);
@@ -502,7 +505,7 @@ static inline void local_r4k_flush_cache_page(void *args)
 	}
 
 	if (vaddr) {
-		if (cpu_has_dc_aliases)
+		if (map_coherent)
 			kunmap_coherent();
 		else
 			kunmap_atomic(vaddr, KM_USER0);
@@ -1226,6 +1229,28 @@ void au1x00_fixup_config_od(void)
 	}
 }
 
+/* CP0 hazard avoidance. */
+#define NXP_BARRIER()							\
+	 __asm__ __volatile__(						\
+	".set noreorder\n\t"						\
+	"nop; nop; nop; nop; nop; nop;\n\t"				\
+	".set reorder\n\t")
+
+static void nxp_pr4450_fixup_config(void)
+{
+	unsigned long config0;
+
+	config0 = read_c0_config();
+
+	/* clear all three cache coherency fields */
+	config0 &= ~(0x7 | (7 << 25) | (7 << 28));
+	config0 |= (((_page_cachable_default >> _CACHE_SHIFT) <<  0) |
+		    ((_page_cachable_default >> _CACHE_SHIFT) << 25) |
+		    ((_page_cachable_default >> _CACHE_SHIFT) << 28));
+	write_c0_config(config0);
+	NXP_BARRIER();
+}
+
 static int __cpuinitdata cca = -1;
 
 static int __init cca_setup(char *str)
@@ -1271,6 +1296,10 @@ static void __cpuinit coherency_setup(void)
 	case CPU_AU1500: /* rev. AB */
 		au1x00_fixup_config_od();
 		break;
+
+	case PRID_IMP_PR4450:
+		nxp_pr4450_fixup_config();
+		break;
 	}
 }
 

arch/mips/mm/init.c

@@ -71,6 +71,7 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
  * don't have to care about aliases on other CPUs.
  */
 unsigned long empty_zero_page, zero_page_mask;
+EXPORT_SYMBOL_GPL(empty_zero_page);
 
 /*
  * Not static inline because used by IP27 special magic initialization code

arch/mips/mm/page.c

@@ -460,7 +460,7 @@ void __cpuinit build_copy_page(void)
 		build_copy_load_pref(&buf, -off);
 		off -= cache_line_size;
 	}
-	off = cache_line_size ? min(8, pref_bias_copy_load / cache_line_size) *
+	off = cache_line_size ? min(8, pref_bias_copy_store / cache_line_size) *
 	                        cache_line_size : 0;
 	while (off) {
 		build_copy_store_pref(&buf, -off);

arch/mips/nxp/pnx8550/jbs/board_setup.c

@@ -47,16 +47,7 @@
 
 void __init board_setup(void)
 {
-	unsigned long config0, configpr;
-
-	config0 = read_c0_config();
-
-	/* clear all three cache coherency fields */
-	config0 &= ~(0x7 | (7<<25) | (7<<28));
-	config0 |= (CONF_CM_DEFAULT | (CONF_CM_DEFAULT<<25) |
-			(CONF_CM_DEFAULT<<28));
-	write_c0_config(config0);
-	BARRIER;
+	unsigned long configpr;
 
 	configpr = read_c0_config7();
 	configpr |= (1<<19); /* enable tlb */

arch/mips/nxp/pnx8550/stb810/board_setup.c

@@ -33,15 +33,7 @@
 
 void __init board_setup(void)
 {
-	unsigned long config0, configpr;
-
-	config0 = read_c0_config();
-
-	/* clear all three cache coherency fields */
-	config0 &= ~(0x7 | (7<<25) | (7<<28));
-	config0 |= (CONF_CM_DEFAULT | (CONF_CM_DEFAULT<<25) |
-			(CONF_CM_DEFAULT<<28));
-	write_c0_config(config0);
+	unsigned long configpr;
 
 	configpr = read_c0_config7();
 	configpr |= (1<<19); /* enable tlb */

arch/mips/pci/pci-sb1250.c

@@ -207,6 +207,7 @@ struct pci_controller sb1250_controller = {
 
 static int __init sb1250_pcibios_init(void)
 {
+	void __iomem *io_map_base;
 	uint32_t cmdreg;
 	uint64_t reg;
 	extern int pci_probe_only;
@@ -253,12 +254,13 @@ static int __init sb1250_pcibios_init(void)
 	 * works correctly with most of Linux's drivers.
 	 * XXX ehs: Should this happen in PCI Device mode?
 	 */
-
-	set_io_port_base((unsigned long)
-			 ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES, 65536));
 	isa_slot_offset = (unsigned long)
 	    ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES_32, 1024 * 1024);
 
+	io_map_base = ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES, 1024 * 1024);
+	sb1250_controller.io_map_base = io_map_base;
+	set_io_port_base((unsigned long)io_map_base);
+
 #ifdef CONFIG_SIBYTE_HAS_LDT
 	/*
 	 * Also check the LDT bridge's enable, just in case we didn't