mac80211: return correct error return from ieee80211_wep_init

[linux-2.6-omap-h63xx.git] / include / asm-arm / cacheflush.h

diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h
index 70b0fe724b62686a3485b66e747b46300117d8ec..e68a1cbcc85209d99fa3a927bb40cb6727690e02 100644 (file)
--- a/include/asm-arm/cacheflush.h
+++ b/include/asm-arm/cacheflush.h
@@ -424,9 +424,9 @@ static inline void flush_anon_page(struct vm_area_struct *vma,
 }
 
 #define flush_dcache_mmap_lock(mapping) \
-       write_lock_irq(&(mapping)->tree_lock)
+       spin_lock_irq(&(mapping)->tree_lock)
 #define flush_dcache_mmap_unlock(mapping) \
-       write_unlock_irq(&(mapping)->tree_lock)
+       spin_unlock_irq(&(mapping)->tree_lock)
 
 #define flush_icache_user_range(vma,page,addr,len) \
        flush_dcache_page(page)
@@ -459,15 +459,19 @@ static inline void flush_ioremap_region(unsigned long phys, void __iomem *virt,
 #define __cacheid_vivt_asid_tagged_instr(val)  (__cacheid_type_v7(val) ? ((val & (3 << 14)) == (1 << 14)) : 0)
 
 #if defined(CONFIG_CPU_CACHE_VIVT) && !defined(CONFIG_CPU_CACHE_VIPT)
-
+/*
+ * VIVT caches only
+ */
 #define cache_is_vivt()                        1
 #define cache_is_vipt()                        0
 #define cache_is_vipt_nonaliasing()    0
 #define cache_is_vipt_aliasing()       0
 #define icache_is_vivt_asid_tagged()   0
 
-#elif defined(CONFIG_CPU_CACHE_VIPT)
-
+#elif !defined(CONFIG_CPU_CACHE_VIVT) && defined(CONFIG_CPU_CACHE_VIPT)
+/*
+ * VIPT caches only
+ */
 #define cache_is_vivt()                        0
 #define cache_is_vipt()                        1
 #define cache_is_vipt_nonaliasing()                                    \
@@ -489,7 +493,12 @@ static inline void flush_ioremap_region(unsigned long phys, void __iomem *virt,
        })
 
 #else
-
+/*
+ * VIVT or VIPT caches.  Note that this is unreliable since ARM926
+ * and V6 CPUs satisfy the "(val & (15 << 25)) == (14 << 25)" test.
+ * There's no way to tell from the CacheType register what type (!)
+ * the cache is.
+ */
 #define cache_is_vivt()                                                        \
        ({                                                              \
                unsigned int __val = read_cpuid(CPUID_CACHETYPE);       \