From: Mark Yao <mark.yao@rock-chips.com>
Date: Wed, 18 Jan 2017 04:58:31 +0000 (+0800)
Subject: drm/rockchip: logo: no need IOMMU_WRITE for logo
X-Git-Tag: firefly_0821_release~729
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c68388c460e23ff0705e963a78e1fb25d3759376;p=firefly-linux-kernel-4.4.55.git

drm/rockchip: logo: no need IOMMU_WRITE for logo

Change-Id: Id047a37db7ffa865403b99429e8cdbd37a588e59
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
---

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 4c58306c606f..2da8f030fcd7 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -149,8 +149,6 @@ static int init_loader_memory(struct drm_device *drm_dev)
 	}
 
 	if (private->domain) {
-		int prot = IOMMU_READ | IOMMU_WRITE;
-
 		memset(&logo->mm, 0, sizeof(logo->mm));
 		ret = drm_mm_insert_node_generic(&private->mm, &logo->mm,
 						 size, PAGE_SIZE,
@@ -164,7 +162,7 @@ static int init_loader_memory(struct drm_device *drm_dev)
 
 		logo->iommu_map_size = iommu_map_sg(private->domain,
 						    logo->dma_addr, sgt->sgl,
-						    sgt->nents, prot);
+						    sgt->nents, IOMMU_READ);
 		if (logo->iommu_map_size < size) {
 			DRM_ERROR("failed to map buffer");
 			ret = -ENOMEM;