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-rw-r--r--target/linux/oxnas/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch42
1 files changed, 27 insertions, 15 deletions
diff --git a/target/linux/oxnas/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch b/target/linux/oxnas/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch
index b59c06e2ab..024675e599 100644
--- a/target/linux/oxnas/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch
+++ b/target/linux/oxnas/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch
@@ -4,15 +4,17 @@
#define __cpuc_flush_user_range __glue(_CACHE,_flush_user_cache_range)
#define __cpuc_coherent_kern_range __glue(_CACHE,_coherent_kern_range)
#define __cpuc_coherent_user_range __glue(_CACHE,_coherent_user_range)
-+#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
- #define __cpuc_flush_dcache_area __glue(_CACHE,_flush_kern_dcache_area)
+-#define __cpuc_flush_dcache_area __glue(_CACHE,_flush_kern_dcache_area)
- #define dmac_flush_range __glue(_CACHE,_dma_flush_range)
+-#define dmac_flush_range __glue(_CACHE,_dma_flush_range)
++#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
++# define __cpuc_flush_dcache_area __glue(_CACHE,_flush_kern_dcache_area)
++# define dmac_flush_range __glue(_CACHE,_dma_flush_range)
+#else
-+#define __cpuc_flush_dcache_area __glue(fiq,_flush_kern_dcache_area)
++# define __cpuc_flush_dcache_area __glue(fiq,_flush_kern_dcache_area)
++# define dmac_flush_range __glue(fiq,_dma_flush_range)
++#endif
+
-+#define dmac_flush_range __glue(fiq,_dma_flush_range)
-+#endif /* CONFIG_DMA_CACHE_FIQ_BROADCAST */
#endif
#endif
@@ -38,15 +40,23 @@
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
-@@ -329,7 +329,11 @@ void flush_dcache_page(struct page *page
+@@ -319,6 +319,7 @@ void __sync_icache_dcache(pte_t pteval)
+ void flush_dcache_page(struct page *page)
+ {
+ struct address_space *mapping;
++ bool skip_broadcast = true;
+
+ /*
+ * The zero page is never written to, so never has any dirty
+@@ -329,7 +330,10 @@ void flush_dcache_page(struct page *page
mapping = page_mapping(page);
+- if (!cache_ops_need_broadcast() &&
+#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
- if (!cache_ops_need_broadcast() &&
-+#else
-+ if (
++ skip_broadcast = !cache_ops_need_broadcast();
+#endif
++ if (skip_broadcast &&
mapping && !page_mapped(page))
clear_bit(PG_dcache_clean, &page->flags);
else {
@@ -56,13 +66,15 @@
#include <asm/glue-cache.h>
#ifndef MULTI_CACHE
+-#define dmac_map_area __glue(_CACHE,_dma_map_area)
+-#define dmac_unmap_area __glue(_CACHE,_dma_unmap_area)
+#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
- #define dmac_map_area __glue(_CACHE,_dma_map_area)
- #define dmac_unmap_area __glue(_CACHE,_dma_unmap_area)
++# define dmac_map_area __glue(_CACHE,_dma_map_area)
++# define dmac_unmap_area __glue(_CACHE,_dma_unmap_area)
+#else
-+#define dmac_map_area __glue(fiq,_dma_map_area)
-+#define dmac_unmap_area __glue(fiq,_dma_unmap_area)
-+#endif /* CONFIG_DMA_CACHE_FIQ_BROADCAST */
++# define dmac_map_area __glue(fiq,_dma_map_area)
++# define dmac_unmap_area __glue(fiq,_dma_unmap_area)
++#endif
/*
* These are private to the dma-mapping API. Do not use directly.