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Date: Wed, 13 Feb 2019 19:34:36 +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, linux@...linux.org.uk, robin.murphy@....com 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_map_pages() Convert to use vm_map_pages() to map range of kernel memory to user vma. Tested on Rockchip hardware and display is working, including talking to Lima via prime. Signed-off-by: Souptick Joarder <jrdr.linux@...il.com> Tested-by: Heiko Stuebner <heiko@...ech.de> --- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c index a8db758..a2ebb08 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c @@ -221,26 +221,13 @@ 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 int 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_map_pages(vma, rk_obj->pages, count); } static int rockchip_drm_gem_object_mmap_dma(struct drm_gem_object *obj, -- 1.9.1
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