diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.23/160-kmap_coherent.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-2.6.23/160-kmap_coherent.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.23/160-kmap_coherent.patch b/target/linux/brcm47xx/patches-2.6.23/160-kmap_coherent.patch new file mode 100644 index 0000000000..8a3bd0ec74 --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.23/160-kmap_coherent.patch @@ -0,0 +1,63 @@ +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 @@ + 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)) { + vfrom = kmap_coherent(from, vaddr); + copy_page(vto, vfrom); + kunmap_coherent(); +@@ -234,7 +234,7 @@ + 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(); +@@ -250,7 +250,7 @@ + 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-2.6.23/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 +@@ -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-2.6.23/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 +@@ -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 |