From: YoungJun Cho yj44.cho@samsung.com
When drm iommu is not supported, buf->pages has to be allocated and assigned to phys_to_page() result, which type is struct page *. So it is sufficient to allocate buf->pages with multiple struct page pointer size.
Signed-off-by: YoungJun Cho yj44.cho@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com --- drivers/gpu/drm/exynos/exynos_drm_buf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_buf.c b/drivers/gpu/drm/exynos/exynos_drm_buf.c index 22865ba..3200622 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_buf.c +++ b/drivers/gpu/drm/exynos/exynos_drm_buf.c @@ -57,7 +57,7 @@ static int lowlevel_buffer_allocate(struct drm_device *dev, dma_addr_t start_addr; unsigned int i = 0;
- buf->pages = kzalloc(sizeof(struct page) * nr_pages, + buf->pages = kzalloc(sizeof(struct page *) * nr_pages, GFP_KERNEL); if (!buf->pages) { DRM_ERROR("failed to allocate pages.\n");