diff --git a/drivers/video/rockchip/rga2/rga2_mmu_info.c b/drivers/video/rockchip/rga2/rga2_mmu_info.c
index fc85dd224151..15bae97f0622 100644
--- a/drivers/video/rockchip/rga2/rga2_mmu_info.c
+++ b/drivers/video/rockchip/rga2/rga2_mmu_info.c
@@ -168,49 +168,65 @@ static int rga2_buf_size_cal(unsigned long yrgb_addr, unsigned long uv_addr, uns
             stride = (w * 4 + 3) & (~3);
             size_yrgb = stride*h;
             start = yrgb_addr >> PAGE_SHIFT;
-            pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	    end = yrgb_addr + size_yrgb;
+	    end = (end + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+	    pageCount = end - start;
             break;
         case RGA2_FORMAT_RGBX_8888 :
             stride = (w * 4 + 3) & (~3);
             size_yrgb = stride*h;
             start = yrgb_addr >> PAGE_SHIFT;
-            pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	    end = yrgb_addr + size_yrgb;
+	    end = (end + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+	    pageCount = end - start;
             break;
         case RGA2_FORMAT_RGB_888 :
             stride = (w * 3 + 3) & (~3);
             size_yrgb = stride*h;
             start = yrgb_addr >> PAGE_SHIFT;
-            pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	    end = yrgb_addr + size_yrgb;
+	    end = (end + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+	    pageCount = end - start;
             break;
         case RGA2_FORMAT_BGRA_8888 :
             stride = (w * 4 + 3) & (~3);
             size_yrgb = stride * h;
             start = yrgb_addr >> PAGE_SHIFT;
-            pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	    end = yrgb_addr + size_yrgb;
+	    end = (end + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+	    pageCount = end - start;
             break;
         case RGA2_FORMAT_RGB_565 :
             stride = (w*2 + 3) & (~3);
             size_yrgb = stride * h;
             start = yrgb_addr >> PAGE_SHIFT;
-            pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	    end = yrgb_addr + size_yrgb;
+	    end = (end + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+	    pageCount = end - start;
             break;
         case RGA2_FORMAT_RGBA_5551 :
             stride = (w*2 + 3) & (~3);
             size_yrgb = stride * h;
             start = yrgb_addr >> PAGE_SHIFT;
-            pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	    end = yrgb_addr + size_yrgb;
+	    end = (end + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+	    pageCount = end - start;
             break;
         case RGA2_FORMAT_RGBA_4444 :
             stride = (w*2 + 3) & (~3);
             size_yrgb = stride * h;
             start = yrgb_addr >> PAGE_SHIFT;
-            pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	    end = yrgb_addr + size_yrgb;
+	    end = (end + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+	    pageCount = end - start;
             break;
         case RGA2_FORMAT_BGR_888 :
             stride = (w*3 + 3) & (~3);
             size_yrgb = stride * h;
             start = yrgb_addr >> PAGE_SHIFT;
-            pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	    end = yrgb_addr + size_yrgb;
+	    end = (end + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+	    pageCount = end - start;
             break;
 
         /* YUV FORMAT */
@@ -423,9 +439,6 @@ static int rga2_MapUserMemory(struct page **pages, uint32_t *pageTable,
 		for (i = 0; i < pageCount; i++) {
 			/* Get the physical address from page struct. */
 			pageTable[i] = page_to_phys(pages[i]);
-			/* ensure dst not flush null cache */
-			if (writeFlag && i >= pageCount - 2)
-				break;
 			rga_dma_flush_page(pages[i]);
 		}
 		for (i = 0; i < result; i++)
@@ -475,8 +488,6 @@ static int rga2_MapUserMemory(struct page **pages, uint32_t *pageTable,
 			   << PAGE_SHIFT)) & ~PAGE_MASK));
 		pte_unmap_unlock(pte, ptl);
 		pageTable[i] = (uint32_t)Address;
-		if ( writeFlag && (i >= pageCount - 2))
-			break;
 		rga_dma_flush_page(pfn_to_page(pfn));
 	}
 	up_read(&current->mm->mmap_sem);
@@ -576,8 +587,6 @@ static int rga2_mmu_info_BitBlt_mode(struct rga2_reg *reg, struct rga2_req *req)
 						 req->dst.vir_w,
 						 req->dst.vir_h,
 						 &DstStart);
-		/* if vir_address not 4k align need more page */
-		DstPageCount += 2;
 		if (DstPageCount == 0)
 			return -EINVAL;
 	}