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-rw-r--r--target/linux/bcm47xx/patches-5.4/160-kmap_coherent.patch78
1 files changed, 0 insertions, 78 deletions
diff --git a/target/linux/bcm47xx/patches-5.4/160-kmap_coherent.patch b/target/linux/bcm47xx/patches-5.4/160-kmap_coherent.patch
deleted file mode 100644
index 55e99dbddd..0000000000
--- a/target/linux/bcm47xx/patches-5.4/160-kmap_coherent.patch
+++ /dev/null
@@ -1,78 +0,0 @@
-From: Jeff Hansen <jhansen@cardaccess-inc.com>
-Subject: [PATCH] kmap_coherent
-
-On ASUS WL-500gP there are some "Data bus error"s when executing simple
-commands liks "ps" or "cat /proc/1/cmdline".
-
-This fixes OpenWrt ticket #1485: https://dev.openwrt.org/ticket/1485
----
---- a/arch/mips/include/asm/cpu-features.h
-+++ b/arch/mips/include/asm/cpu-features.h
-@@ -243,6 +243,9 @@
- #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
---- a/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
-+++ b/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
-@@ -80,4 +80,6 @@
- #define cpu_scache_line_size() 0
- #define cpu_has_vz 0
-
-+#define cpu_use_kmap_coherent 0
-+
- #endif /* __ASM_MACH_BCM47XX_CPU_FEATURE_OVERRIDES_H */
---- a/arch/mips/mm/c-r4k.c
-+++ b/arch/mips/mm/c-r4k.c
-@@ -697,7 +697,7 @@ static inline void local_r4k_flush_cache
- map_coherent = (cpu_has_dc_aliases &&
- page_mapcount(page) &&
- !Page_dcache_dirty(page));
-- if (map_coherent)
-+ if (map_coherent && cpu_use_kmap_coherent)
- vaddr = kmap_coherent(page, addr);
- else
- vaddr = kmap_atomic(page);
-@@ -719,7 +719,7 @@ static inline void local_r4k_flush_cache
- }
-
- if (vaddr) {
-- if (map_coherent)
-+ if (map_coherent && cpu_use_kmap_coherent)
- kunmap_coherent();
- else
- kunmap_atomic(vaddr);
---- a/arch/mips/mm/init.c
-+++ b/arch/mips/mm/init.c
-@@ -174,7 +174,7 @@ void copy_user_highpage(struct page *to,
- void *vfrom, *vto;
-
- vto = kmap_atomic(to);
-- if (cpu_has_dc_aliases &&
-+ if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
- page_mapcount(from) && !Page_dcache_dirty(from)) {
- vfrom = kmap_coherent(from, vaddr);
- copy_page(vto, vfrom);
-@@ -196,7 +196,7 @@ 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 &&
- page_mapcount(page) && !Page_dcache_dirty(page)) {
- void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
- memcpy(vto, src, len);
-@@ -214,7 +214,7 @@ 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 &&
- page_mapcount(page) && !Page_dcache_dirty(page)) {
- void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
- memcpy(dst, vfrom, len);