3 files changed, 30 insertions, 19 deletions

diff --git a/arch/parisc/include/asm/prefetch.h b/arch/parisc/include/asm/prefetch.h
index c5edc60c059f..1ee7c82672c1 100644
--- a/arch/parisc/include/asm/prefetch.h
+++ b/arch/parisc/include/asm/prefetch.h
@@ -21,7 +21,12 @@
 #define ARCH_HAS_PREFETCH
 static inline void prefetch(const void *addr)
 {
-        __asm__("ldw 0(%0), %%r0" : : "r" (addr));
+        __asm__(
+#ifndef CONFIG_PA20
+                /* Need to avoid prefetch of NULL on PA7300LC */
+                "       extrw,u,= %0,31,32,%%r0\n"
+#endif
+                "       ldw 0(%0), %%r0" : : "r" (addr));
 }
 
 /* LDD is a PA2.0 addition. */
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 6f0594439143..535034217021 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -581,7 +581,11 @@
          */
         cmpiclr,=       0x01,\tmp,%r0
         ldi             (_PAGE_DIRTY|_PAGE_READ|_PAGE_WRITE),\prot
+#ifdef CONFIG_64BIT
         depd,z          \prot,8,7,\prot
+#else
+        depw,z          \prot,8,7,\prot
+#endif
         /*
          * OK, it is in the temp alias region, check whether "from" or "to".
          * Check "subtle" note in pacache.S re: r23/r26.
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index 93ff3d90edd1..5d7218ad885c 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -692,7 +692,7 @@ ENTRY(flush_icache_page_asm)
 
         /* Purge any old translation */
 
-        pitlb           (%sr0,%r28)
+        pitlb           (%sr4,%r28)
 
         ldil            L%icache_stride, %r1
         ldw             R%icache_stride(%r1), %r1
@@ -706,27 +706,29 @@ ENTRY(flush_icache_page_asm)
         sub             %r25, %r1, %r25
 
 
-1:      fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
+        /* fic only has the type 26 form on PA1.1, requiring an
+         * explicit space specification, so use %sr4 */
+1:      fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
         cmpb,COND(<<)           %r28, %r25,1b
-        fic,m           %r1(%r28)
+        fic,m           %r1(%sr4,%r28)
 
         sync
         bv              %r0(%r2)
-        pitlb           (%sr0,%r25)
+        pitlb           (%sr4,%r25)
         .exit
 
         .procend