set the kernel version of brcm47xx-2.6 in the target makefile, keep patch compatibili...

[openwrt/svn-archive/archive.git] / target / linux / brcm47xx-2.6 / patches-2.6.22 / 160-kmap_coherent.patch

diff --git a/target/linux/brcm47xx-2.6/patches-2.6.22/160-kmap_coherent.patch b/target/linux/brcm47xx-2.6/patches-2.6.22/160-kmap_coherent.patch
new file mode 100644 (file)
index 0000000..6706808
--- /dev/null
+++ b/target/linux/brcm47xx-2.6/patches-2.6.22/160-kmap_coherent.patch
@@ -0,0 +1,63 @@
+Index: linux-2.6.22-rc4/arch/mips/mm/init.c
+===================================================================
+--- linux-2.6.22-rc4.orig/arch/mips/mm/init.c  2007-06-10 21:32:12.000000000 +0100
++++ linux-2.6.22-rc4/arch/mips/mm/init.c       2007-06-10 21:33:21.000000000 +0100
+@@ -207,7 +207,7 @@
+       void *vfrom, *vto;
+ 
+       vto = kmap_atomic(to, KM_USER1);
+-      if (cpu_has_dc_aliases) {
++      if (cpu_has_dc_aliases && cpu_use_kmap_coherent) {
+               vfrom = kmap_coherent(from, vaddr);
+               copy_page(vto, vfrom);
+               kunmap_coherent();
+@@ -230,7 +230,7 @@
+       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 *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
+               memcpy(vto, src, len);
+               kunmap_coherent();
+@@ -246,7 +246,7 @@
+       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);
+               memcpy(dst, vfrom, len);
+Index: linux-2.6.22-rc4/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h
+===================================================================
+--- /dev/null  1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.22-rc4/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h    2007-06-10 21:33:21.000000000 +0100
+@@ -0,0 +1,13 @@
++/*
++ * This file is subject to the terms and conditions of the GNU General Public
++ * License.  See the file "COPYING" in the main directory of this archive
++ * for more details.
++ *
++ * 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
++
++#define cpu_use_kmap_coherent 0
++
++#endif /* __ASM_MACH_BCM947XX_CPU_FEATURE_OVERRIDES_H */
+Index: linux-2.6.22-rc4/include/asm-mips/cpu-features.h
+===================================================================
+--- linux-2.6.22-rc4.orig/include/asm-mips/cpu-features.h      2007-06-10 21:32:12.000000000 +0100
++++ linux-2.6.22-rc4/include/asm-mips/cpu-features.h   2007-06-10 21:33:21.000000000 +0100
+@@ -101,6 +101,9 @@
+ #ifndef cpu_has_pindexed_dcache
+ #define cpu_has_pindexed_dcache       (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
+ #endif
++#ifndef cpu_use_kmap_coherent
++#define cpu_use_kmap_coherent 1
++#endif
+ 
+ /*
+  * I-Cache snoops remote store.  This only matters on SMP.  Some multiprocessors