atheros: fix reboot on ar2315 devices which do not implement the atheros reference...

[openwrt.git] / target / linux / brcm47xx / patches-2.6.25 / 160-kmap_coherent.patch

diff --git a/target/linux/brcm47xx/patches-2.6.25/160-kmap_coherent.patch b/target/linux/brcm47xx/patches-2.6.25/160-kmap_coherent.patch
index 8a3bd0e..5fe38aa 100644 (file)
--- a/target/linux/brcm47xx/patches-2.6.25/160-kmap_coherent.patch
+++ b/target/linux/brcm47xx/patches-2.6.25/160-kmap_coherent.patch
@@ -1,38 +1,34 @@
-Index: linux-2.6.23/arch/mips/mm/init.c
-===================================================================
---- linux-2.6.23.orig/arch/mips/mm/init.c      2007-10-09 22:31:38.000000000 +0200
-+++ linux-2.6.23/arch/mips/mm/init.c   2007-10-13 02:57:18.483434538 +0200
-@@ -211,7 +211,7 @@
+--- a/arch/mips/mm/init.c
++++ b/arch/mips/mm/init.c
+@@ -211,7 +211,7 @@ void copy_user_highpage(struct page *to,
        void *vfrom, *vto;
  
        vto = kmap_atomic(to, KM_USER1);
--      if (cpu_has_dc_aliases && !Page_dcache_dirty(from)) {
-+      if (cpu_has_dc_aliases && cpu_use_kmap_coherent && !Page_dcache_dirty(from)) {
+-      if (cpu_has_dc_aliases &&
++      if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+           page_mapped(from) && !Page_dcache_dirty(from)) {
                vfrom = kmap_coherent(from, vaddr);
                copy_page(vto, vfrom);
-               kunmap_coherent();
-@@ -234,7 +234,7 @@
+@@ -235,7 +235,7 @@ void copy_to_user_page(struct vm_area_st
        struct page *page, unsigned long vaddr, void *dst, const void *src,
        unsigned long len)
  {
--      if (cpu_has_dc_aliases) {
-+      if (cpu_has_dc_aliases && cpu_use_kmap_coherent) {
+-      if (cpu_has_dc_aliases &&
++      if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+           page_mapped(page) && !Page_dcache_dirty(page)) {
                void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
                memcpy(vto, src, len);
-               kunmap_coherent();
-@@ -250,7 +250,7 @@
+@@ -255,7 +255,7 @@ void copy_from_user_page(struct vm_area_
        struct page *page, unsigned long vaddr, void *dst, const void *src,
        unsigned long len)
  {
--      if (cpu_has_dc_aliases) {
-+      if (cpu_has_dc_aliases && cpu_use_kmap_coherent) {
-               void *vfrom =
-                       kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
+-      if (cpu_has_dc_aliases &&
++      if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+           page_mapped(page) && !Page_dcache_dirty(page)) {
+               void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
                memcpy(dst, vfrom, len);
-Index: linux-2.6.23/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h
-===================================================================
---- /dev/null  1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.23/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h        2007-10-13 02:56:22.020216880 +0200
+--- /dev/null
++++ b/include/asm-mips/mach-bcm47xx/cpu-feature-overrides.h
 @@ -0,0 +1,13 @@
 +/*
 + * This file is subject to the terms and conditions of the GNU General Public
@@ -41,16 +37,14 @@ Index: linux-2.6.23/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h
 + *
 + * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
 + */
-+#ifndef __ASM_MACH_BCM947XX_CPU_FEATURE_OVERRIDES_H
-+#define __ASM_MACH_BCM947XX_CPU_FEATURE_OVERRIDES_H
++#ifndef __ASM_MACH_BCM47XX_CPU_FEATURE_OVERRIDES_H
++#define __ASM_MACH_BCM47XX_CPU_FEATURE_OVERRIDES_H
 +
 +#define cpu_use_kmap_coherent 0
 +
-+#endif /* __ASM_MACH_BCM947XX_CPU_FEATURE_OVERRIDES_H */
-Index: linux-2.6.23/include/asm-mips/cpu-features.h
-===================================================================
---- linux-2.6.23.orig/include/asm-mips/cpu-features.h  2007-10-09 22:31:38.000000000 +0200
-+++ linux-2.6.23/include/asm-mips/cpu-features.h       2007-10-13 02:56:22.028217337 +0200
++#endif /* __ASM_MACH_BCM47XX_CPU_FEATURE_OVERRIDES_H */
+--- a/include/asm-mips/cpu-features.h
++++ b/include/asm-mips/cpu-features.h
 @@ -101,6 +101,9 @@
  #ifndef cpu_has_pindexed_dcache
  #define cpu_has_pindexed_dcache       (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
@@ -61,3 +55,23 @@ Index: linux-2.6.23/include/asm-mips/cpu-features.h
  
  /*
   * I-Cache snoops remote store.  This only matters on SMP.  Some multiprocessors
+--- a/arch/mips/mm/c-r4k.c
++++ b/arch/mips/mm/c-r4k.c
+@@ -484,7 +484,7 @@ static inline void local_r4k_flush_cache
+                * Use kmap_coherent or kmap_atomic to do flushes for
+                * another ASID than the current one.
+                */
+-              if (cpu_has_dc_aliases)
++              if (cpu_has_dc_aliases && cpu_use_kmap_coherent)
+                       vaddr = kmap_coherent(page, addr);
+               else
+                       vaddr = kmap_atomic(page, KM_USER0);
+@@ -505,7 +505,7 @@ static inline void local_r4k_flush_cache
+       }
+ 
+       if (vaddr) {
+-              if (cpu_has_dc_aliases)
++              if (cpu_has_dc_aliases && cpu_use_kmap_coherent)
+                       kunmap_coherent();
+               else
+                       kunmap_atomic(vaddr, KM_USER0);