cns3xxx: remove one of the dma cache patches, it causes a regression in the ethernet driver

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26802 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/cns3xxx/patches-2.6.31/301-dma_cache_ownership_maint.patch

@@ -1,67 +0,0 @@
---- a/arch/arm/mm/cache-v6.S
-+++ b/arch/arm/mm/cache-v6.S
-@@ -179,6 +179,10 @@ ENTRY(v6_flush_kern_dcache_page)
-  *	- end     - virtual end address of region
-  */
- ENTRY(v6_dma_inv_range)
-+#ifdef CONFIG_SMP
-+	ldrb    r2, [r0]
-+	strb    r2, [r0]
-+#endif
- 	tst	r0, #D_CACHE_LINE_SIZE - 1
- 	bic	r0, r0, #D_CACHE_LINE_SIZE - 1
- #ifdef HARVARD_CACHE
-@@ -187,6 +191,10 @@ ENTRY(v6_dma_inv_range)
- 	mcrne	p15, 0, r0, c7, c11, 1		@ clean unified line
- #endif
- 	tst	r1, #D_CACHE_LINE_SIZE - 1
-+#ifdef CONFIG_SMP
-+	ldrneb  r2, [r1, #-1]
-+	strneb  r2, [r1, #-1]
-+#endif
- 	bic	r1, r1, #D_CACHE_LINE_SIZE - 1
- #ifdef HARVARD_CACHE
- 	mcrne	p15, 0, r1, c7, c14, 1		@ clean & invalidate D line
-@@ -201,6 +209,10 @@ ENTRY(v6_dma_inv_range)
- #endif
- 	add	r0, r0, #D_CACHE_LINE_SIZE
- 	cmp	r0, r1
-+#ifdef CONFIG_SMP
-+	ldrlo   r2, [r0]
-+	strlo   r2, [r0]
-+#endif
- 	blo	1b
- 	mov	r0, #0
- 	mcr	p15, 0, r0, c7, c10, 4		@ drain write buffer
-@@ -214,6 +226,9 @@ ENTRY(v6_dma_inv_range)
- ENTRY(v6_dma_clean_range)
- 	bic	r0, r0, #D_CACHE_LINE_SIZE - 1
- 1:
-+#ifdef CONFIG_SMP
-+	ldr r2, [r0]
-+#endif
- #ifdef HARVARD_CACHE
- 	mcr	p15, 0, r0, c7, c10, 1		@ clean D line
- #else
-@@ -232,6 +247,10 @@ ENTRY(v6_dma_clean_range)
-  *	- end     - virtual end address of region
-  */
- ENTRY(v6_dma_flush_range)
-+#ifdef CONFIG_SMP
-+	ldrb    r2, [r0]
-+	strb    r2, [r0]
-+#endif
- 	bic	r0, r0, #D_CACHE_LINE_SIZE - 1
- 1:
- #ifdef HARVARD_CACHE
-@@ -241,6 +260,10 @@ ENTRY(v6_dma_flush_range)
- #endif
- 	add	r0, r0, #D_CACHE_LINE_SIZE
- 	cmp	r0, r1
-+#ifdef CONFIG_SMP
-+	ldrlob   r2, [r0]
-+	strlob   r2, [r0]
-+#endif
- 	blo	1b
- 	mov	r0, #0
- 	mcr	p15, 0, r0, c7, c10, 4		@ drain write buffer