3 files changed, 8 insertions, 5 deletions

diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 09d91505b90c..5240432e6d1d 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -8,6 +8,7 @@
  * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
  * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
  */
+#include <linux/bug.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/signal.h>
@@ -132,6 +133,8 @@ void *kmap_coherent(struct page *page, unsigned long addr)
         pte_t pte;
         int tlbidx;
 
+        BUG_ON(Page_dcache_dirty(page));
+
         inc_preempt_count();
         idx = (addr >> PAGE_SHIFT) & (FIX_N_COLOURS - 1);
 #ifdef CONFIG_MIPS_MT_SMTC
@@ -208,7 +211,7 @@ void copy_user_highpage(struct page *to, struct page *from,
         void *vfrom, *vto;
 
         vto = kmap_atomic(to, KM_USER1);
-        if (cpu_has_dc_aliases) {
+        if (cpu_has_dc_aliases && !Page_dcache_dirty(from)) {
                 vfrom = kmap_coherent(from, vaddr);
                 copy_page(vto, vfrom);
                 kunmap_coherent();
diff --git a/arch/mips/sgi-ip22/ip22-platform.c b/arch/mips/sgi-ip22/ip22-platform.c
index 78b608d2d4e1..28ffec8e5d1a 100644
--- a/arch/mips/sgi-ip22/ip22-platform.c
+++ b/arch/mips/sgi-ip22/ip22-platform.c
@@ -150,8 +150,8 @@ static int __init sgiseeq_devinit(void)
                 return res;
 
         /* Second HPC is missing? */
-        if (ip22_is_fullhouse() ||
-            !get_dbe(tmp, (unsigned int *)&hpc3c1->pbdma[1]))
+        if (!ip22_is_fullhouse() ||
+            get_dbe(tmp, (unsigned int *)&hpc3c1->pbdma[1]))
                 return 0;
 
         sgimc->giopar |= SGIMC_GIOPAR_MASTEREXP1 | SGIMC_GIOPAR_EXP164 |
diff --git a/arch/mips/sgi-ip22/ip22-time.c b/arch/mips/sgi-ip22/ip22-time.c
index 8e88a442b22a..de3d01823ad5 100644
--- a/arch/mips/sgi-ip22/ip22-time.c
+++ b/arch/mips/sgi-ip22/ip22-time.c
@@ -114,8 +114,8 @@ static unsigned long dosample(void)
         } while (msb);
 
         /* Stop the counter. */
-        writeb(sgint->tcword, (SGINT_TCWORD_CNT2 | SGINT_TCWORD_CALL |
-                               SGINT_TCWORD_MSWST));
+        writeb(SGINT_TCWORD_CNT2 | SGINT_TCWORD_CALL | SGINT_TCWORD_MSWST,
+               &sgint->tcword);
         /*
          * Return the difference, this is how far the r4k counter increments
          * for every 1/HZ seconds. We round off the nearest 1 MHz of master