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Message-ID: <20181206184227.GA28656@jordon-HP-15-Notebook-PC>
Date: Fri, 7 Dec 2018 00:12:27 +0530
From: Souptick Joarder <jrdr.linux@...il.com>
To: akpm@...ux-foundation.org, willy@...radead.org, mhocko@...e.com,
hjc@...k-chips.com, heiko@...ech.de, airlied@...ux.ie
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
linux-arm-kernel@...ts.infradead.org,
dri-devel@...ts.freedesktop.org, linux-rockchip@...ts.infradead.org
Subject: [PATCH v3 4/9] drm/rockchip/rockchip_drm_gem.c: Convert to use
vm_insert_range
Convert to use vm_insert_range() to map range of kernel
memory to user vma.
Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
Tested-by: Heiko Stuebner <heiko@...ech.de>
Acked-by: Heiko Stuebner <heiko@...ech.de>
---
drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 20 ++------------------
1 file changed, 2 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index a8db758..2cb83bb 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -221,26 +221,10 @@ static int rockchip_drm_gem_object_mmap_iommu(struct drm_gem_object *obj,
struct vm_area_struct *vma)
{
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
- unsigned int i, count = obj->size >> PAGE_SHIFT;
unsigned long user_count = vma_pages(vma);
- unsigned long uaddr = vma->vm_start;
- unsigned long offset = vma->vm_pgoff;
- unsigned long end = user_count + offset;
- int ret;
-
- if (user_count == 0)
- return -ENXIO;
- if (end > count)
- return -ENXIO;
- for (i = offset; i < end; i++) {
- ret = vm_insert_page(vma, uaddr, rk_obj->pages[i]);
- if (ret)
- return ret;
- uaddr += PAGE_SIZE;
- }
-
- return 0;
+ return vm_insert_range(vma, vma->vm_start, rk_obj->pages,
+ user_count);
}
static int rockchip_drm_gem_object_mmap_dma(struct drm_gem_object *obj,
--
1.9.1
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