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Diffstat (limited to 'arch/arc/include/asm/cacheflush.h')
-rw-r--r--arch/arc/include/asm/cacheflush.h13
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/arc/include/asm/cacheflush.h b/arch/arc/include/asm/cacheflush.h
index ef62682e8d95..6abc4972bc93 100644
--- a/arch/arc/include/asm/cacheflush.h
+++ b/arch/arc/include/asm/cacheflush.h
@@ -81,16 +81,19 @@ void flush_anon_page(struct vm_area_struct *vma,
#endif /* CONFIG_ARC_CACHE_VIPT_ALIASING */
/*
+ * A new pagecache page has PG_arch_1 clear - thus dcache dirty by default
+ * This works around some PIO based drivers which don't call flush_dcache_page
+ * to record that they dirtied the dcache
+ */
+#define PG_dc_clean PG_arch_1
+
+/*
* Simple wrapper over config option
* Bootup code ensures that hardware matches kernel configuration
*/
static inline int cache_is_vipt_aliasing(void)
{
-#ifdef CONFIG_ARC_CACHE_VIPT_ALIASING
- return 1;
-#else
- return 0;
-#endif
+ return IS_ENABLED(CONFIG_ARC_CACHE_VIPT_ALIASING);
}
#define CACHE_COLOR(addr) (((unsigned long)(addr) >> (PAGE_SHIFT)) & 1)