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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-10-24 22:36:36 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-10-29 19:13:09 +0000
commitdf71dfd4ca01130f98d9dbfab76c440d72a177c6 (patch)
tree5050d23a67be5fc5fabd4e6d96ac89786fb2a9c9 /arch/arm/include
parent657e12fd388899502d47f9f6f9d276ec9ced8add (diff)
ARM: Fix errata 411920 workarounds
Errata 411920 indicates that any "invalidate entire instruction cache" operation can fail if the right conditions are present. This is not limited just to those operations in flush.c, but elsewhere. Place the workaround in the already existing __flush_icache_all() function instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/cacheflush.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index fd03fb63a332..3d0cdd21b882 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -414,9 +414,14 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
static inline void __flush_icache_all(void)
{
+#ifdef CONFIG_ARM_ERRATA_411920
+ extern void v6_icache_inval_all(void);
+ v6_icache_inval_all();
+#else
asm("mcr p15, 0, %0, c7, c5, 0 @ invalidate I-cache\n"
:
: "r" (0));
+#endif
}
#define ARCH_HAS_FLUSH_ANON_PAGE