diff --git a/drivers/video/rockchip/rga2/rga2_mmu_info.c b/drivers/video/rockchip/rga2/rga2_mmu_info.c
index c22419f211e4..5aef238540e4 100644
--- a/drivers/video/rockchip/rga2/rga2_mmu_info.c
+++ b/drivers/video/rockchip/rga2/rga2_mmu_info.c
@@ -180,7 +180,8 @@ static int rga2_buf_size_cal(unsigned long yrgb_addr, unsigned long uv_addr, uns
             pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
             break;
         case RGA2_FORMAT_BGRA_8888 :
-            size_yrgb = w*h*4;
+            stride = (w * 4 + 3) & (~3);
+            size_yrgb = stride * h;
             start = yrgb_addr >> PAGE_SHIFT;
             pageCount = (size_yrgb + PAGE_SIZE - 1) >> PAGE_SHIFT;
             break;