Merge tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6

Pull PA-RISC fixes from James Bottomley:
 "This is a set of three bug fixes that gets parisc running again on
  systems with PA1.1 processors.

  Two fix regressions introduced in 2.6.39 and one fixes a prefetch bug
  that only affects PA7300LC processors.  We also have another pending
  fix to do with the sectional arrangement of vmlinux.lds, but there's a
  query on it during testing on one particular system type, so I'll hold
  off sending it in for now."

* tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6:
  [PARISC] fix panic on prefetch(NULL) on PA7300LC
  [PARISC] fix crash in flush_icache_page_asm on PA1.1
  [PARISC] fix PA1.1 oops on boot

diff --git a/arch/parisc/include/asm/prefetch.h b/arch/parisc/include/asm/prefetch.h
index c5edc60..1ee7c82 100644 (file)
--- 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 6f05944..5350342 100644 (file)
--- 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 93ff3d9..5d7218a 100644 (file)
--- 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