diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_buf.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_buf.c | 34 |
1 files changed, 9 insertions, 25 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_buf.c b/drivers/gpu/drm/exynos/exynos_drm_buf.c index 52d42cdeeb9b..de8d2090bce3 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_buf.c +++ b/drivers/gpu/drm/exynos/exynos_drm_buf.c @@ -34,7 +34,7 @@ static int lowlevel_buffer_allocate(struct drm_device *dev, unsigned int flags, struct exynos_drm_gem_buf *buf) { - dma_addr_t start_addr, end_addr; + dma_addr_t start_addr; unsigned int npages, page_size, i = 0; struct scatterlist *sgl; int ret = 0; @@ -76,26 +76,13 @@ static int lowlevel_buffer_allocate(struct drm_device *dev, return -ENOMEM; } - buf->kvaddr = dma_alloc_writecombine(dev->dev, buf->size, - &buf->dma_addr, GFP_KERNEL); - if (!buf->kvaddr) { - DRM_ERROR("failed to allocate buffer.\n"); - ret = -ENOMEM; - goto err1; - } - - start_addr = buf->dma_addr; - end_addr = buf->dma_addr + buf->size; - - buf->pages = kzalloc(sizeof(struct page) * npages, GFP_KERNEL); - if (!buf->pages) { - DRM_ERROR("failed to allocate pages.\n"); - ret = -ENOMEM; - goto err2; - } - - start_addr = buf->dma_addr; - end_addr = buf->dma_addr + buf->size; + buf->kvaddr = dma_alloc_writecombine(dev->dev, buf->size, + &buf->dma_addr, GFP_KERNEL); + if (!buf->kvaddr) { + DRM_ERROR("failed to allocate buffer.\n"); + ret = -ENOMEM; + goto err1; + } buf->pages = kzalloc(sizeof(struct page) * npages, GFP_KERNEL); if (!buf->pages) { @@ -105,20 +92,17 @@ static int lowlevel_buffer_allocate(struct drm_device *dev, } sgl = buf->sgt->sgl; + start_addr = buf->dma_addr; while (i < npages) { buf->pages[i] = phys_to_page(start_addr); sg_set_page(sgl, buf->pages[i], page_size, 0); sg_dma_address(sgl) = start_addr; start_addr += page_size; - if (end_addr - start_addr < page_size) - break; sgl = sg_next(sgl); i++; } - buf->pages[i] = phys_to_page(start_addr); - DRM_DEBUG_KMS("vaddr(0x%lx), dma_addr(0x%lx), size(0x%lx)\n", (unsigned long)buf->kvaddr, (unsigned long)buf->dma_addr, |
